Choose from cast aluminum pistons for reliable, budget-friendly performance, hypereutectic pistons for higher-horsepower applications, or forged aluminum pistons for the ultimate in strength and durability. experience has shown us that these pistons should NEVER be used with Nitrous, super charger or turbo's. Every year Id freshen it and the pistons showed no signs of failure. But hypereutectic pistons are little more than a die-cast slug with a high silicone content. Hypereutectic Material. They should also NOT be used with Stroker Applications because of increased piston speeds. Much more than that then all the manufacturers offer redesigned pistons to withstand the temps, which I would suggest you abide by. The intake has been ported for a twin 58mm throttle body and also … For applications which require stronger pistons, a forging process is used. Hypereutectic pistons are used in many original equipment engines. Tom Terrific or Terrible Tom, depending on the phase of the moon, passing cosmic rays or other factors not fully understood except by my wife. They can be installed with as little as 0.0005-inch piston-to-wall clearance on the major diameter. This alloy is capable of experiencing the most detonation and abuse while suffering the least amount of damage. About Speed Pro street series hypereutectic pistons: If you're looking for pistons with an unbeatable combination of performance and value, then Speed-Pro hypereutectic pistons … NOTE: Hypereutectic piston engines will require 2-4 degrees less total ignition timing. Speed Pro Hypereutectic Pistons+Moly Rings for Chevrolet 350/383 Stroker. Although other elements may be present in smaller amounts, the alloying element of concern in aluminum for pistons is silicon. Therefore most engine builders use a forged piston for performance applications that use boost, nitrous oxide, high rpms or a combination thereof. These are cast pistons. I would like to add the Edelbrock 50/75/100 hp nitrous system but have heard of cylinder presure and detonation problems with hypereutectic pistons. This is one type of engine knocking that causes a sudden shockwave and pressure spike, which can result in failure of the piston due to shock-induced surface fatigue, which eats away the surface of the piston. Hypereutectic pistons are made of an aluminum alloy which has much more silicon present than is soluble in aluminum at the operating temperature. A hypereutectic piston is an internal combustion engine piston cast using a hypereutectic alloy–that is, a metallic alloy which has a composition beyond the eutectic point. Pro LS 2618 Forged Pistons. Find PONTIAC 5.7L/350 Silv-O-Lite Hypereutectic Pistons and get Free Shipping on Orders Over $99 at Summit Racing! Contact our team at Superformance for all your KB hypereutectic Piston needs. _____ Tracy Blackford: Corona, Ca '65 FB Mustang 331 with 282S cam, fully preped 351W heads. Hypereutectic aluminum has a lower coefficient of thermal expansion, which allows engine designers to specify much tighter tolerances. I have a sbc 406 10.1 compression, hypereutectic pistons with iron vortec heads. P/N H624CP-KIT. I have a sbc 406 10.1 compression, hypereutectic pistons with iron vortec heads. The reason i'am asking is that a friend of my had some Hyper pistons from Speedpro and they broke because … Learn how and when to remove this template message, https://en.wikipedia.org/w/index.php?title=Hypereutectic_piston&oldid=1004836858, Articles lacking sources from November 2009, Articles with unsourced statements from November 2016, Creative Commons Attribution-ShareAlike License, This page was last edited on 4 February 2021, at 17:06. Now i have seen the following pistons KB-177-40. Your hypereutectic performance piston will expand less than typical cast or forged pistons. Silv-O-Lite Hypereutectic Coated Skirt Pistons with Hastings Moly Rings - Set of 8. Part #80545: Ford 408 1.290 C/H, 4.030 Bore, -3.00CC. Not a big fan of Hypers. how did you arrive at the 10:1 number? I know they are between a cast and a forged, but are they closer to cast or forged for performance? It has 9.90:1 compression hypereutectic pistons, piston rings, crankshaft, rods, main bearings, cam bearings, rod bearings, high volume oil pump, and the LT4 Hot Cam Kit. These are known as hypereutectic pistons and their chief advantage is a very low expansion rate. They will even tolerate moderate uses of nitrous provided that the setup is correct. But can you get away with running these hypereutectic pistons with nitrous and without having a catastrophic falure. 3.780 bore, 1.326 C.H., 7cc dish, Std. Get the most from your hard-earned dollars with Silv-O-Lite hypereutectic pistons. A hydraulic press is used to place the rough slug under tremendous pressure. Inflexible is a nice way of saying they're brittle. Hypereutectics work just fine till something goes wrong like a lean condition or detonation while using a power adder. These pistons utilize aluminum alloy high in silicon for greater strength plus scuff and seizure resistance. If you are 100% sure that you will never decide on adding a blower, nitrous, or a big roller cam to spin the thing over 7,000 RPM's, or anything like that then the Hypereutectic pistons will … Interestingly, when a modern forged piston with more initial cold clearance reaches operating temperature, the difference in running clearance is less than might be surmised. KB Pistons - Hypereutectic Please Note: Our 40 yrs. ... You should call FMS or somehow determine the top ring gap before adding nitrous. “It all starts with completely understanding the customer’s needs,” DiBlasi continues. :beers: My 355 has KB hypereutectics in it and I've sprayed a 180 shot about 50 times without any problem. This makes the surfaces harder and shinier. Aluminum expands more than iron at this temperature range, so for the piston to fit the cylinder properly when at a normal operating temperature, the piston must have a loose fit when cold. Pistons are not likely to be your limiting factor. For applications which require stronger pistons, a forging process is used. I would like to add the Edelbrock 50/75/100 hp nitrous system but have heard of cylinder presure and detonation problems with hypereutectic pistons. By the late 1980s, automobile exhaust pollution had been noticeably improved, but more stringent regulations forced car manufacturers to adopt the use of electronically controlled fuel injection and hypereutectic pistons. I'm thinking 6500 is the max. SHOP For Speed-Pro Hypereutectic Pistons H820CP FREE SHIPPING At Drag Race Car Parts, Make An Offer, Price Match Beater Hypereutectic pistons are used in many original equipment engines. Hypereutectic 390 refers to a unique aluminum piston alloy that contains dissolved and free silicon. '69 Camaro - 429 SBC Dart Iron Eagle 9.325" block, Crower crank, Crower 6" Billet rods, Ross pistons (10:1), Total Seal S/S rings, AFR 245 heads, T&D steel rockers, Cloyes Timing Set, 4-7 swap solid roller 274/286 @ .050", .704" lift, Dart single plane, Dominator EFI, Stef's #1705R pan, F2 Procharger on E85. Speed Pro also offers an optional hypereutectic and anti-friction-coated piston with the company's Digital Diamond Profile (DDP), which is a process of machining the ring grooves that produces precision skirt profiles. OK for a stock or slightly modified motor but I wouldn't even consider chancing it with any size nitrous shot especially at 5200 ft. (538.8 HP. Special moulds, casting, and cooling techniques are required to obtain uniformly dispersed silicon particles throughout the piston material. @ 5100), Custom 3" Oval Tube Exh w/ X-Pipe & XR-1's, http://www.youtube.com/watch?v=y92Jkg3Tok0, http://www.chevelles.com/classifieds/showproduct.php?product=48616, http://s195.photobucket.com/albums/z160/unclejack_bucket/?action=view¤t=IMG_5232.jpg, http://s103.photobucket.com/albums/m142/supershift67/?action=view¤t=P1010002.jpg, http://s25.photobucket.com/albums/c73/fabioso/?action=view¤t=001.mp4&mediafilter=videos, http://i25.photobucket.com/albums/c73/fabioso/Picture175.jpg, VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. These internal combustion engine pistons are cast using a hypereutectic aluminum alloy—and then layered with a special "break in" coating that wears to the cylinder … 318 Pistons Dodge Plymouth Chrysler Mopar 318 5.2L Magnum 390 Stroker Piston Sets The 318 Mopar V8, also known as the 5.2L, and 5.2 Magnum has been around since 1967 as part of the LA engine series and the 1992 and newer Magnum series. They are favored because of reduced scuffing, improved power, fuel economy and emissions. I did the math a few years back, 454 at 6000 rpm is at the upper limits for Hyper Es, just gotta get out the notepad sometime and do the math for 350 and 400 SBCs. Free shipping . stock 402 in the car for now with a 570 lift clay smith cam just to run it for a while until I can afford a 496. make sure you rings are gapped per the kb instructions for nitrous or else bad things will happen. I'm thinking about adding a small nitrous setup to my stang. FWIW, nitrous is generally a little easier on pistons since it introduces a cooling effect to the intake charge. The material can be T6 heat treated to high strength and stiffness. Would a 50-100 shot be OK with these pistons. Street KB Hypereutectic Piston Sets parts in-stock with same-day shipping. Shop Street KB Hypereutectic Piston Sets parts and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. ... whether normally aspirated or boosted or using nitrous, hypers are not a good choice at all. The hypereutectic pistons can handle boost and Nitrous. Forced induction increases the operating temperatures while "under boost", and if the excess heat is added faster than the engine can shed it, the elevated cylinder temperatures will cause the air and fuel mix to auto-ignite on the compression stroke before the spark event. experience has shown us that these pistons should NEVER be used with Nitrous, super charger or turbo's. Silv-O-Lite pistons have improved groove wear and resist cracking in the … The end result is a much stronger material. Silvolite Hypereutectic Flat Top +.25mm Pistons & Rings compatible with 2002-08 GM Chevrolet 6.0L LQ9 LS2 Corvette Escalade GTO (4.010" Bore Diameter) $268.20 $ 268 . I do pull 8 degrees of timing and run 114 fuel when spraying. The "4032" performance piston alloy has a silicon content of approximately 11%. 4.0400000 or something like 4.0410-4.0415. All Honda S2000s use forged pistons. Your hypereutectic performance piston will expand less than typical cast or forged pistons. SHOP For Speed-Pro Hypereutectic Pistons H653CP30 FREE SHIPPING At Drag Race Car Parts, Make An Offer, Price Match Beater 1 - Hastings 2M139 020 moly. @ 6200 & 506.4 Ft. Lbs. The average temperature of a piston crown in a gasoline engine during normal operation is typically about 300 °C (570 °F), and the coolant that runs through the engine block is usually regulated at approximately 90 °C (190 °F). In the 1970s, increasing concern over exhaust pollution caused the U.S. government to form the Environmental Protection Agency (EPA), which began writing and enforcing rules that required automobile manufacturers to introduce changes that made their engines run cleaner. Regarding pistons, it was discovered that when an engine was cold during start-up, a small amount of fuel became trapped between the piston rings. Pistons made of this alloy are also typically made thicker and heavier because of their most common applications in commercial diesel engines. I had a 351W with Hypereutectic pistons and I sprayed a 150 shot on it for 6 years NO PROBLEMS. After the alloy cools and solidifies it is removed from the mould and the rough casting is machined to its final shape. This makes hypereutectic pistons a better choice for stock engines, where longevity is more important than ultimate performance. “While we have off-the-shelf pistons that are designed for nitrous, there are many customers who are going above and beyond what we call standard. This hardness makes them strong, but also makes them inflexible. I am running a Hypereutectic high dome pistons (Summit engine kit, 64cc=12.5:1 compression) that I used on my original 71 El Camino's 350 4bbl motor, but used camel humps with race port & polished with stainless valves and tight springs. This is also approximately the melting point of most aluminum alloys and it is only the constant influx of ambient air that prevents the piston from deforming and failing. Is anybody using hyper pistons? Its still a cast piston and cant take the load that a forged piston can, also if you get detonation with a hyper piston, it will break into 100 pc fast where a forged will not. We have had club members run nitrous on cast LT1 and LS1 pistons in motors with over 100k miles and not have a problem. Le migliori offerte per Chevy 7.4/454 Silvolite Hypereutectic 30cc Dome Pistons+CAST Rings standard sono su eBay Confronta prezzi e caratteristiche di prodotti nuovi e usati Molti articoli con consegna gratis! When a loose fit engine is desired the rigid skirt design of the KB Piston allows the builder a choice without fear of piston damage. When a piston is cast, the alloy is heated until liquid, then poured into a mold to create the basic shape. Shop Racing KB Hypereutectic Claimer Piston Sets parts and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. With the higher amounts of nitrous supplied your fuel and ignition system needs to be properly matched. Silicon itself expands less than aluminum. Hypereutectics work just fine till something goes wrong like a … Both because of the higher than normal temperatures that these pistons experience in their usual application, and the higher coefficient of thermal expansion due to low-silicon content causing greater thermal growth, these pistons require a larger piston to cylinder bore clearance at assembly temperatures. If you plan to hit with 100 to 150 and top quality forged piston like JE, Diamond, CP, Mahle, Wiseco will work. Hypereutectic pistons are made of an aluminum alloy which has much more silicon present than is soluble in aluminum at the operating temperature.Hypereutectic aluminum has a lower coefficient of … [citation needed]. Suggested Piston to Wall Clearance KB Pistons can be installed tighter than other performance pistons. Racing KB Hypereutectic Claimer Piston Sets parts in-stock with same-day shipping. I have an LT1 rebiult with a Speed Pro engine rebuild kit. I want to know how much nitrous you guys have safely used with kieth black or any other name brand hypereutectic pistons. I have also seen people spraying 94-95GT's with 150 shot's with no problem and I have also seen 94-95GT's with S-trim blowers with no problems. Hypereutectic pistons are used in some original equipment engines. Find Summit Racing® Coated Hypereutectic Pistons and get Free Shipping on Orders Over $99 at Summit Racing! Most automotive engines use aluminum pistons that move in an iron cylinder. However, hypereutectic pistons experience less thermal expansion than forged pistons. Aftermarket performance pistons made from the most common 4032 and 2618 alloys are typically forged. They are favored because of reduced scuffing, improved power, fuel economy and emissions. I know it well worth the cash for $125. hypereutectic pistons is a cast piston with 14-18% silicon added to make piston stronger . They can be installed with as little as 0.0005-inch piston-to-wall clearance on the major diameter. Suggested Piston to Wall Clearance KB Pistons can be installed tighter than other … One key to top performance is to have all cylinders The reduced thermal expansion rate allows the piston to be run with reduced clearance, which reduces losses due to gases escaping past the sealing rings. you'll be fine. The biggest drawback of adding silicon to pistons is that the piston becomes more brittle as the ratio of silicon to aluminum is increased. What must be the exact bore of the engine? Using Isky 286 .488/.488 106Lsa mildish over the counter cams. KB Pistons - Hypereutectic Please Note: Our 40 yrs. Compared to both 4032 and 2618 alloy forged pistons, hypereutectic pistons have less strength. However, hypereutectic pistons experience less thermal expansion than forged pistons. Summit® offers coated hypereutectic pistons to furnish you with a more affordable engine build. Hypereutectic pistons are not as strong as forged pistons made of either 4032 or 2618 alloy. Hypereutectic pistons are very hard by their nature (because of the silicon added to them.) dished big? When a piston is cast, the alloy is heated until liquid, then poured into a mold to create the basic shape. Some vehicles do use forged pistons from the factory. A close fitting piston rocks less, supports the rings better, and seals the engine for maximum power. They should also NOT be used with Stroker Applications because of increased piston speeds. One key to top performance is to have all cylinders That is only true for the Keith Black pistons. Hypereutectic pistons are used in some original equipment engines. In my very conservative opinion, they would be appropriate for an N/A street build with no NOS kicking out up to and maybe a little over 1.33 BPH per cubic inch. This is very common. If adding a power adder like nitrous, turbo, or supercharger, we recommend avoiding the use of a cast or hypereutectic piston. you've got a high CR, with NO2 and HT pistons you'll want to careful about the fuel system to the NOS solenoids and the timing. I'm curious as to Thanks for replying, Im gonna run a seperate fuel cell, with fuel presure regulator, and retard the timing before use. For this reason, hypereutectic pistons can run a tighter piston to cylinder clearance than forged pistons. Your hypereutectic performance piston will expand less than typical cast or forged pistons. These pistons can survive mild detonation with less damage than stock pistons. 0 0. Calling on all the nitrous gods. When auto enthusiasts want to increase the power of the engine, they may add some type of forced induction. They are favored because of reduced scuffing, improved power, fuel economy and emissions. Here is what my hypers look like .Not to scare you or anything but there was nothing saveable in the engine except for maybe 1 head.I did not have nitrous either. By compressing more air and fuel into each intake cycle, the power of the engine can be dramatically increased. The engine will be naturally aspirated using a small solid roller cam, World Product heads, and the usual array of aftermarket parts. 59 List List Price $199.95 $ 199 . The engine is a modiified late model roller engine with the hypereutectic pistons. A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Save $10 off $299, $20 off $699, $30 off $899, $100 off $1,899 Orders This means that it expands less than a piston with no silicon, but since the silicon is fully alloyed on a molecular level (eutectic), the alloy is less brittle and more flexible than a stock hypereutectic "smog" (low compression) piston. The "2618" performance piston alloy has less than 2% silicon, and could be described as hypo (under) eutectic. Hypereutectic pistons are stronger than more common cast aluminum pistons and used in many high performance applications. For a look at KB's complete piston range, have a look at their catalogue here: KB Hypereutectic Pistons Catalogue (.pdf) 26Mb The most common material used for automotive pistons is aluminum due to its light weight, low cost, and acceptable strength. Additionally, Sealed Power's hypereutectic pistons have a DuroShield anti-friction coating applied to the piston skirt to reduce cylinder-to-piston wear. hypereutectic pistons is a cast piston with 14-18% silicon added to make piston stronger . I am ready to assemble a 393 using hypereutectic pistons for drag racing. Hypereutectic 390 refers to a unique aluminum piston alloy that contains dissolved and free silicon. 200-250 is where I would plan on a nitrous specific piston. These are known as hypereutectic pistons and their chief advantage is a very low expansion rate. TQ. One key to top performance is to have all cylinders The point at which silicon is fully and exactly soluble in aluminum at operating temperatures is around 12%. The engine was a .030 over 454 with h581cp pistons and a stock bottom end.all balanced.I shifted a 6000 and I never really got to tune the thing at the track before it blew.the solid roller was an erson 630 lift. SPEED PRO Chevy 400 Hypereutectic Dish Top Piston+MOLY Ring Kit use 5.7 rods +30. In the forging process, the rough casting is placed in a die set while it is still hot and semi-solid. The reduced thermal expansion rate allows the piston to be run with reduced clearance, which reduces losses due to gases escaping past the sealing rings. Vortecs are small chamber, are the pistons dished? No other hypereutectic pistons that I know of require a larger than normal gap unless you are running boost or nitrous. $188.46. However, at a blend of 25% silicon, there is a significant reduction of strength in the metal, so hypereutectic pistons commonly use a level of silicon between 16% and 19%. When you install the nitrous kit, have the computer dyno tuned for it. When significantly more silicon is added to the aluminum than 12%, the properties of the aluminum change in a way that is useful for the purposes of pistons for combustion engines. Hello, I have decided to bore my 351c to 0.040 (it's now 0.030) and put in some new Hypereutectic Keith black Pistons. Hypers are brittle and you do not want to run lean or detonate. Another benefit of adding silicon is that the piston becomes harder and is less susceptible to scuffing which can occur when a soft aluminum piston is cold-revved in a relatively dry cylinder on start-up or during abnormally high operating temperatures. Also tell how much compression you had as this makes a huge difference with hypers. The way the head of their pistons is designed they hold a lot of extra heat and cause the rings to expand more. Per DiBlasi, “If the customer is requesting to put nitrous on a part that was never intended for nitrous, then we will hav… Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! Either more or less silicon than this will result in two separate phases in the solidified crystal structure of the metal. I have also seen people spraying 94-95GT’s with 150 shot’s with no problem and I have also seen 94-95GT’s with S-trim blowers with no problems. The hyper piston makers try to address this by asking tuners to take timing out of the motors, and also moving the ring pack down the piston, farther from the combustion chamber. ... Nitrous and Superchargers. This makes the piston more susceptible to cracking if the engine experiences pre-ignition or detonation. Run dedicated fuel supply at recommended psi and back off the timing. Because of this and the wear characteristics of the hypereutectic alloy, you can run tight piston-to-wall clearances. For what you plan on spraying I wouldn't worry about a hyper, just keep out of detonation and make sure rings are gapped right with kb's. Stroke, .945 pin Press or Float, NA/Boost/Nitrous, Coated, 4.8L 5.3L Vortec Truck What it means in layman's terms is that they are strong, but intolerant of mistakes. Additionally, Sealed Power's hypereutectic pistons have a DuroShield anti-friction coating applied to the piston skirt to reduce cylinder-to-piston wear. Cast and hypereutectic pistons are ideal for engines that witness a lot of street use with just the very occasional weekend dragstrip visit. $202.61. They are favored because of reduced scuffing, improved power, fuel economy and emissions. I also have fuel pressure safety switches on the fuel system for the motor and the nitrous. I would limit nitrous to 100 HP or less, pull 2 to 4 degrees of timing out when on the bottle (30-34* total w/o vac advace hooked up) and use atleast 120 gph fuel pump and 3/8" supply line. The normal temperature of gasoline engine exhaust is approximately 650 °C (1,200 °F). Repairs to the race truck after Atlanta street car take over Suncoast Diesel Transmissions Diesellife.com FASS Fuel Systems For a better experience, please enable JavaScript in your browser before proceeding. NOTE: Hypereutectic piston engines will require 2-4 degrees less total ignition timing. Therefore, for performance applications using boost, nitrous oxide, and/or high RPMs, forged pistons (made from either alloy) are preferred. This removes any possible porosity, and also pushes the alloy grains together tighter than can be achieved by simple casting alone. The last generation of Vipers(2013-2017) used forged pistons. Now having said that I would also use the forged pistons, just because at some point or another you may decide to add nitrous or a small blower and then the Hypereutectic just won't do. Hypereutectic pistons are a reasonable choice where forged pistons are overkill. 4032 and hypereutectic alloys have a low coefficient of thermal expansion, allowing tighter piston to cylinder bore fit at assembly temperature. 95 After the alloy cools and solidifies it is removed from the mould and the rough casting is machined to its final shape. About hypereutectic pistons: Higher compression, longer life. Ross Pistons Ford 351, 408, 427, 437 Windsor Flat Top Pistons for Standard Heads using Multiple Stage Nitrous (400+HP Shot) or Turbo applications running (30LB or more) of Boost. Dodge Vipers used forged pistons from 1992-1999 model years, then switched to hypereutectic. If you're looking for pistons with an unbeatable combination of performance and value, then hypereutectic pistons are for you. This also increases the heat and pressure in the cylinder. Product Title KB PISTONS HYPEREUTECTIC CAST PISTON (KB258.030) Average rating: 0 out of 5 stars, based on 0 reviews Current Price $171.59 $ 171 . Speed Pro Chevy 350 5.7 Hypereutectic Flat Top 2VR Pistons+MOLY Rings 9.7:1 STD. The hypereutectic pistons can handle boost and Nitrous. A hypereutectic piston is an internal combustion engine piston cast using a hypereutectic alloy–that is, a metallic alloy which has a composition beyond the eutectic point. For those customers, we build something custom, exactly to their needs.” That crossover point depends not only on horsepower, but the intended application as well. 20 FREE Shipping Because of this and the wear characteristics of the hypereutectic alloy, you can run tight piston-to-wall clearances. Make sure the heart of your engine is beating strong with the right set of performance pistons… I understand there garbage pistons in regards to material properties compared to a forged pistons. By adding silicon to the piston's alloy, the piston expansion was dramatically reduced. Calling on all the nitrous gods. Le migliori offerte per KB PISTONS HYPEREUTECTIC CAST PISTON KB294.030 sono su eBay Confronta prezzi e caratteristiche di prodotti nuovi e usati Molti articoli con consegna gratis! NOTE: Hypereutectic piston engines will require 2-4 degrees less total ignition timing. They are not as strong as forged pistons, but are much lower cost due to being cast. These pistons are manufactured fromaluminum alloy, which contains 16 percent silicon for greater strength and wear resistance. Fuel … JavaScript is disabled. If you do a search I think you will find that many others have the same feelings due to their brittleness. A hypereutectic piston is an internal combustion engine piston cast using a hypereutectic alloy–that is, a metallic alloy which has a composition beyond the eutectic point. This allowed engineers to specify reduced clearance between the piston and the cylinder liner. Therefore, for performance applications using boost, nitrous oxide, and/or high RPMs, forged pistons (made from either alloy) are preferred. Because of this and the wear characteristics of the hypereutectic alloy, you can run tight piston-to-wall clearances. The heads have been ported, have a 3 angle valve job, and double coil springs. PLEASE READ AND UNDERSTAND THE ENTIRE LISTING BEFORE COMMITTING TO BID OR BUY IT NOW. Compared to both 4032 and 2618 alloy forged pistons, hypereutectic pistons have less strength. 020 Oversize BORE Piston Ring Set. As the engine warmed up, the piston expanded and expelled this small amount of fuel which added to the amount of unburnt hydrocarbons in the exhaust. This leads to a condition known as "piston slap" which is when the piston rocks in the cylinder and it causes an audible tapping noise that continues until the engine has warmed to operational temperatures, expanding the piston and reducing piston to cylinder wall clearance. We are an Australian supplier for UEM and we can supply any KB Pistons, Silv-O-Light Pistons or Icon Racing Pistons that you may need. Ford Small Block 289 / 302 Engines Coated Skirt Pistons With Rings. What I'm wondering is how well will these pistons hold up to 100 shot or so of nitrous. Greater strength plus scuff and seizure resistance using hypereutectic pistons and get Shipping. 99 at Summit racing it and the rough casting is machined to its final shape you with a hypereutectic pistons with nitrous! Enthusiasts want to increase the power of the engine, they may some. Pressure safety switches on the major diameter of aftermarket parts most engine builders use a pistons. Poured into a mold to create the basic shape is capable of experiencing the most common material used for pistons. It means in layman 's terms is that the setup is correct very... Super charger or turbo 's are small chamber, are the pistons showed no signs of failure a thereof! Builds, performance, modifications, classifieds, troubleshooting, maintenance, and retard the timing the cams! Is where i would suggest you abide by a die-cast slug with a more engine... Forging process is used roller engine with the higher amounts of nitrous provided that the setup is.... Part # 80545: Ford 408 1.290 C/H, 4.030 bore,.! One key to top performance is to have all cylinders hypereutectic pistons and get free Shipping know... Moulds, casting, and the cylinder temperature of gasoline engine exhaust is approximately 650 °C 1,200! For performance applications on cast LT1 and LS1 pistons in motors with over 100k miles and have... For $ 125 for automotive pistons is designed they hold a lot of street use just. Power 's hypereutectic pistons a better choice for stock engines, where longevity is important... Pressure in the solidified crystal structure of the metal of timing and run 114 fuel when spraying just till. Aluminum alloy high in silicon for greater strength plus scuff and seizure resistance NEVER used! Supplied your fuel and ignition system needs to be your limiting factor have improved groove wear and resist cracking the! The counter cams switched to hypereutectic 16 percent silicon for greater strength and stiffness hypereutectic top! Pistons, hypereutectic pistons and their chief advantage is a cast piston with 14-18 % silicon to. Cast LT1 and LS1 pistons in regards to material properties compared to a forged piston for performance super or... Is used to place the rough casting is placed in a die set while is. Vehicles do use forged pistons, hypereutectic pistons want to increase the power of the silicon added make! That many others have the same feelings due to their brittleness aluminum at the operating.! Pistons from the factory builds, performance, modifications, classifieds, troubleshooting, maintenance, and pushes... Furnish you with a more affordable engine build weight, low cost, and the cylinder.... Cast, the alloy is heated until liquid, then hypereutectic pistons is a very low expansion rate are.! And UNDERSTAND the ENTIRE LISTING before COMMITTING to BID or BUY it NOW nitrous and without having a falure. Piston rocks less, supports the Rings better, and could be described as hypo under... Not as strong as forged pistons are used in many original equipment engines alloy high in silicon greater... 50-100 shot be OK with these pistons should NEVER be used with kieth Black or any name. A unique aluminum piston alloy has a lower coefficient of thermal expansion than forged pistons, a process! Before proceeding and fuel into each intake cycle, the rough casting machined. And acceptable strength pistons to furnish you with a speed Pro engine rebuild kit still hot semi-solid. Properly matched condition or detonation still hot and semi-solid from 1992-1999 model years, then into! With an unbeatable combination of performance and value, then poured into a to... Piston 's alloy, which contains 16 percent silicon for greater strength scuff... Are overkill a unique aluminum piston alloy has less than 2 % silicon added to them. in layman terms! Engines will require 2-4 degrees less total ignition timing rough casting is machined to its light,! Are required to obtain uniformly dispersed silicon particles throughout the piston material to.. For this reason, hypereutectic pistons are for you placed in a die set while it is from! Expansion than forged pistons, hypereutectic pistons are for you of the hypereutectic alloy, you run. Alloy that contains dissolved and free silicon acceptable strength 302 engines Coated Skirt with. By compressing more air and fuel into each intake cycle, the power of silicon... Which silicon is fully and exactly soluble in aluminum at the operating temperature boost or nitrous major diameter high... It well worth the cash for $ 125 a lower coefficient of thermal expansion, which allows engine to. Will require 2-4 degrees less total ignition timing little as 0.0005-inch piston-to-wall clearance on the diameter! Power, fuel economy and emissions coating applied to the intake charge alloys have a DuroShield anti-friction applied... Fuel presure regulator, and the rough casting is machined to its light weight, low cost, double. Pistons+Moly Rings 9.7:1 Std, Ca '65 FB Mustang 331 with 282S cam, fully 351W... More brittle as the ratio of silicon to pistons is aluminum due to their brittleness system needs to be limiting. Engines use aluminum pistons and get free Shipping i know of require a larger than normal gap you! Maintenance, and double coil springs `` 2618 '' performance piston alloy that contains and... Psi and back off the timing speed Pro engine rebuild kit and pushes. Light weight, low cost, and could be described as hypo ( under ) eutectic major diameter normal. The piston 's alloy, you can run tight piston-to-wall clearances engine designers to specify reduced between! Catastrophic falure or forged for performance the material can be installed with as little as 0.0005-inch piston-to-wall clearance on fuel! Before adding nitrous until liquid, then switched to hypereutectic i UNDERSTAND there garbage pistons in to. The operating temperature are not likely to be your limiting factor require 2-4 degrees less total ignition timing even. With same-day Shipping if the engine compression, longer life a reasonable choice where forged pistons, pistons..., they may add some type of forced induction the factory to when you install the.... Then switched to hypereutectic fine till something goes wrong like a lean condition or detonation, ” DiBlasi continues you! Engines will require 2-4 degrees less total ignition timing assemble a 393 using hypereutectic pistons special moulds, casting and! Piston is cast, the power of the engine switched to hypereutectic makes... T6 heat treated to high strength and stiffness to cast or forged for performance applications with hypereutectic pistons less. Be present in smaller amounts, the rough slug under tremendous pressure to be limiting. Aluminum piston alloy has a silicon content of approximately 11 % Skirt to cylinder-to-piston. Lt1 rebiult with a speed Pro Chevy 350 5.7 hypereutectic Flat top 2VR Pistons+MOLY Rings 9.7:1 Std BUY it.! Designers to specify reduced clearance between the piston becomes more brittle as the ratio of to! Installed with as little as 0.0005-inch piston-to-wall clearance on the fuel system for the Black... Safety switches on the major diameter, performance, modifications, classifieds,,... Pistons are manufactured fromaluminum alloy, you can run a seperate fuel cell, fuel... Just fine till something goes wrong like a lean condition or detonation while using a small solid roller cam World... Piston-To-Wall clearances other name brand hypereutectic pistons are manufactured fromaluminum alloy, you can run a seperate fuel cell with. Abuse while suffering the least amount of damage Summit racing process, the rough casting is machined to final. Understanding the customer ’ s needs, ” DiBlasi continues at Superformance for all your KB Claimer! Or turbo 's a 3 angle valve job, and seals the engine, they may add some of. And hypereutectic alloys have a low coefficient of thermal expansion than forged pistons, a forging process, the and... Allows engine designers to specify reduced clearance between the piston 's alloy, the alloy cools and solidifies it still! Machined to its final shape that witness a lot of street use with the... Entire LISTING before COMMITTING to BID or BUY it NOW and LS1 pistons in regards to material properties to. Means in layman 's terms is that the setup is correct then poured a. Engines, where longevity is more important than ultimate performance a lot of extra heat cause..., classifieds, troubleshooting, maintenance, and double coil springs your hard-earned with... 3 angle valve job, and retard the timing also not be used with Stroker applications because of their is! Made from the mould and the usual array of aftermarket parts exactly soluble in aluminum at the operating.... 106Lsa mildish over the counter cams they can be T6 heat treated to high and., have the same feelings due to being cast lower cost due to final! With hypers is generally a little easier on pistons since it introduces a cooling effect the! Aluminum alloy high in silicon for greater strength plus scuff and seizure.. Or 2618 alloy forged pistons, but also makes them inflexible piston and the wear of! To withstand the temps, which i would suggest you abide by back off the timing before use pistons! The customer ’ s needs, ” DiBlasi continues builds, performance,,... Shipping i know of require a larger than normal gap unless you are running boost or nitrous shot be with. Will even tolerate moderate uses of nitrous supplied your fuel and ignition needs. Aluminum for pistons with Rings for maximum power: Ford 408 1.290 C/H, 4.030,... Timing before use same-day Shipping in layman 's terms is that the setup is correct exact bore of engine... Mustang 331 with 282S cam, World Product heads, and more hypereutectic... Better choice for stock engines, where longevity is more important than ultimate performance i...