Each ring should be fitted to the particular cylinder in which they are to be installed. Microwelding damages the piston ring or ring groove sealing surface when localized friction welding causes the transference of material from the ring land to the ring side, most often the bottom ring side. This site uses cookies. Intake valve pocket specs generally control top ring position because the intake valve is always larger with more proximity to the edge of the piston crown. Wiseco pistons … By continuing to use this website you are giving consent to cookies being used. The diameter and number of gas ports is largely based on application and piston diameter. The smaller ring also generates less friction but there is a relationship between ring dimensions, sealing and oil control. They impact combustion sealing, oil control, friction, and many more engine attributes. A back clearance of .008 - .012 inch is typical to racing and high performance pistons. Wiseco Pistons, Rings & More The name Wiseco is synonymous with pistons. These AMC pistons come with anti-friction skirt coatings, plasma moly piston rings, heavy duty wrist pins and pin retention clips. Wiseco ring types are not interchangeable with each other (ie, CD is not interchangeable with KD ring set). Topics: Almost gone. These rings have a stainless steel gas nitride top ring, cast iron Napier hook second ring, and flex-vent oil ring with gas nitride scraper rails. 1300+ products In Stock, ready to ship at CARiD.com. Ultra-thin, low tension rings need combustion pressure provided by gas porting to achieve optimum sealing. To check the gap, the ring should be placed into the bore (without the piston) and squared up so that its level, using a ring-squaring tool. Piston ring grooves serve a larger purpose than simply supporting the rings. Axial ClearanceThe vertical clearance remaining in the piston ring groove after the ring is installed. Wiseco Piston Rings Part #: 2362CD. The quality and placement of the ring grooves on your pistons is just as important as your cam specs. In that case, .450-inch or more is not unreasonable. The accumulator groove is machined into the piston between the top compression ring and the second (scraper) ring. Everything You Need to Know About Ring Gap! Racers in the Super Stock classes always locate the top ring as high as possible to ensure stability of the ring pack and to promote a more active and thorough combustion event. Part Number: WIS-RCS08450 Not Yet Reviewed It then fills the ring back spacing to press the ring out against the cylinder wall. “D-wall” is the standard automotive thickness (SAE standard) and it’s calculated by bore diameter divided by 22. featured, Wiseco is a world leader in piston technology because it focuses on the minute details of cylinder sealing science. Wiseco Domestic Automotive Forged Pistons This line features dedicated forgings, specially designed valve pockets, unique dome and crown designs, optimized skirt profiles and precision machined ring grooves. Click Here for more information on Wiseco Pistons and rings. Decades ago racers like Bill “Grumpy” Jenkins used to purchase unfinished pistons and cut their own ring grooves exactly where they wanted them and to the finish and tolerance they desired. NOS Wiseco Piston Kit 1.00 Bombardier 1984-1986 Cam Am 250 524P4 524-P4. PISTONS 101, 800-969-7501. Wiseco goes to great lengths to make sure you get this right, even if you don’t check it. The company has been manufacturing pistons since 1941 and is renowned for producing high-quality pistons for off-road racing and riding. Gas ports deliver direct cylinder pressure behind the ring to seal the ring against the bottom surface of the ring land and to force it outward against the cylinder wall. Hence it is important that you use the rings specified by your piston manufacturer or be prepared to share your ring pack information if you are providing your own rings. Celebrating 70 years in 2011, Wiseco continues to "service the needs of motorsports enthusiasts" by manufacturing the best high-performance pistons. Microwelding upsets ring sealing quality and can even jam the ring in the groove. The first method is preferred and it is good practice to check it at several places around the perimeter of the piston. They impact combustion sealing, oil control, friction, and many more engine attributes. Lowest Prices. Conversely, a 5.400" diameter piston … We Ship Today! Another way is to use modeling clay or soft wax; press it into the groove then remove it and measure with a caliper. Pistons and rings are available for purchase at: www.midwestsupercub,net or by calling (563)659-5276 Look for Midwest Super Cub at your next pulling event and make sure to pick up a new … Wiseco is a USA manufacturer for performance products such as forged pistons, clutch baskets, gasket kits, connecting rods, valves, crankshafts, and camshafts for motorcycles, dirtbikes, ATV, … Today, that’s no longer necessary as manufacturers such as Wiseco pay considerable attention to ring groove design. Vertical and horizontal gas ports in pistons are also an accepted way of routing cylinder pressure to the back of the ring. Best selection, low prices & orders over $89 ship free. It promotes stability by spreading the contact points between the rings and the skirt and reduces the crevice volume which resists detonation and promotes a more consistent burn, making the cylinder more active. Don’t measure between the ring and the bottom of the ring groove as you might damage the sealing surface. Accumulator grooves have proved most effective and they are a common feature on many, if not most, high performance and racing pistons. All Wiseco Sport Compact kits come with 1mm x 1.2mm x 2.8mm XX ring sets. One of the most critical problems accompanying severe racing and high performance piston applications is the potential for "microwelding." Wiseco Performance Engine Parts from an Authorized Dealer. This product is made of high-quality materials to serve you for years to come. OEM Replacement This part is aftermarket equipment designed to replace the original manufacturer's part numbers specified here. You can determine the back clearance by measuring the depth of the ring groove with the depth scale on a set of dial calipers and then comparing it to the measured radial thickness. Stothers also explains that piston skirt design is another critical aspect. If the ring groove is too thin to measure with a caliper depth scale, a machinist’s scale is another option. We'll ship today if ordered in: 1 0 HR: 0 1 … Wiseco. ENGINE TECH, Start with the minimum of .001-inch and work up. Wiseco Product Search By Application --Select Year-- 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 … Axial HeightThe dimension from one side face to the other or ring thickness, usually expressed in fractional sizes like 1/16”, decimal sizes like .043” or metric sizes like 1.5mm. Many applications can also be purchased with a complete top-end gasket kit from Wiseco. Piston orientation is extremely critical when you look at asymmetrical valve reliefs, but other aspects of the piston design are also affected. www.denniskirk.com. Axial clearance is typically checked by inserting a feeler gauge between the ring and the top of the ring groove. Call 800-505-3274 or Shop Online. High temperature and excessive movement are the root causes. These pistons include thicker decks and performance optimized piston ring lands. While various types of piston rings are more suitable to specific applications, the ring grooves themselves are often overlooked in the pursuit of optimum cylinder sealing. During the combustion event, cylinder pressure follows a path down the crevice volume and into the ring groove above the ring. Wiseco 808M06640 Single Ring Racing Piston Kit Standard Bore 66.40mm 5 out of 5 stars (2) 2 product ratings - Wiseco 808M06640 Single Ring Racing Piston Kit Standard Bore 66.40mm Clearance and ring groove quality are frequently assumed. Piston ring grooves serve a larger purpose than simply supporting the rings. Polaris Trail Boss 350L 4x4 with 2 Stroke Engine 1993, Ring Set by Wiseco®. Includes piston and rings, no wrist pin. Performance, Pistons have wear and friction reducing skirt coating. With today’s thin rings, some racers run side axial clearance as tight as 0.0004 - 0.0005-inch, using gas ports to supplement ring pressure. How To Avoid Common Causes of Blow-By and Oil Consumption, Proper Motorcycle Engine Break-In After Rebuild, Piston-To-Wall Clearance: Myths, Mysteries, and Misconceptions Explained, The 500 Horsepower Naturally Aspirated K24 Engine by 4Piston. For more information visit our Privacy Policy. All Wiseco pistons are forged from high silicon, low expansion aluminum alloy. Although made with pride in Ohio, Wiseco pistons … Wiseco … This site uses cookies. Oval track and road racing pistons use horizontal gas ports at the top of the ring groove to resist carbon buildup while shorter duration drag racing engine use more effective vertical gas ports. The piston … This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced … Sometimes the ring pack is moved down well over .400-inch to accommodate these concerns. Almost gone. Radial Wall ThicknessRing dimension from the front face touching the cylinder wall to the back or inside face of the ring. Smaller ring thickness means less mass and less inertia to overcome when the ring reverses direction at TDC and BDC. I just purchased a Wiseco Forged Performance clutch basket, are there any special things I need to … The main purpose for axial clearance is to allow the ring to spin. This thick dome piston can be machined to a .540" compression height if needed. Automotive Products … WISECO PISTON … The cross-hatch in the cylinder walls induces rotation of the rings. Tech. Filing Gaps 1. Radial Back Clearance   Ring groove space behind ring when the ring face is flush with piston ring land. October 12, 2017 / by This product is made of high-quality materials to serve you for years to come. Among those details, the type of piston rings used in racing and high performance engines is always a hot topic. For best results the ring groove must offer the ideal clearance and freedom of movement for the ring and it must provide a hard, flat sealing surface for the ring to bear against under high cylinder pressure. Thinner rings and smaller ring grooves offer more leeway for optimum ring placement because they require less space, but they are at risk in sever applications. But the ring grooves in pistons also play a major role in sealing combustion pressure and controlling oil and blow by. Kit, Copyright © 2020 Wiseco Piston Company Inc. All Rights Reserved - Use of this site is subject to the following list of. This offers a superior strength, weight reduction, improved heat transfer and longer life. These grooves are machined into the top ring land above the top ring to minimize contact drag when the piston rocks over upon reversal. The thimble sized piston from a Cox .049 model airplane engine operates just fine with such minimal clearance that it does not even require any form of piston ring to seal the combustion gas. We often get calls about people setting ring gaps to OEM specs which can be as little as 1/3 the amount of ring gap that’s actually required.” Mistake #3 - Putting rings … Everything You Wanted to Know about Piston Ring Grooves. Before the Internet, even before mail order titans like … The pistons … Pay Attention to the Skirt “On asymmetric piston … Wiseco is a world leader in piston … Too much back spacing makes the ring slow to respond, but there must be some clearance so the ring can move and conform during all dynamic conditions. These pistons are designed to accommodate the reluctor ring on stroker cranks without having to notch the … It should be noted that ring grooves (especially the top groove) do not expand evenly since material thickness is not uniform due to dome profiles, dish profiles and valve reliefs. When you first open the box, you will see that the tabs say “1”, “2” or “3” to show which groove the rings are. Its purpose is to provide additional relief space for pressure escaping past the top ring to build up before it attempts to pass the second ring. Other features such as dome brushing, skirt coatings, gas ports, and advanced ring packages will be found on many of these pistons. Moderate nitrous applications in the 250 HP range will work with the ring pack approximately .250-inch down from the crown. A slight drag will indicate the proper clearance. $199.99. Back clearance is checked by inserting the edge of a ring into a groove and pressing it all the way to the back of the groove to make certain it does not protrude past the face of the ring land. NOS WISECO PISTON RING 1974-1976 G4TR 1976-1980 YZ80 1976-1980 MX80 1949L. The Best 2-Stroke Engine Rebuild Video You'll Ever Watch, Mixin' Gas, Makin' Memories: 2020 Wiseco 2-Stroke MX World Championships, Polaris RZR: Rebuilding the Legends with Wiseco, 2020 Wiseco 2-Stroke MX World Championships Are Back On, Loretta Lynn's Amateur Motocross Championships Daily History | Wiseco 2020. Install the dot toward the top of the piston. The cylinder bore must be honed to the final size before ring gap can be checked. series pistons are forged from 4032 alloy aluminum in Mentor, Ohio and include rings, pin, and clips for an all-inclusive rebuild. They add minimal volume to the crevice volume and they also help resist detonation by disrupting flame travel into the crevice volume where pressure spikes might unseat the ring. Follow the ring gap instructions for the pistons you are using. $19.99. The gap on the second ring should always be larger than the top ring end gap, this will help to reduce top ring flutter or lifting. 11132P208 Wiseco Piston Unchromed 2.770" X .640 x .490. The gas pressure must be evenly applied to the ring to promote a good seal and to prevent detrimental ring flutter. Wiseco’s piston ring compressor sleeves are an indispensable addition to any engine builder’s toolbox, and make it easy to do the job right the first time. Forged piston kits are available from Wiseco for a wide range of applications, and include the piston, ring(s), wrist pin, and circlips. Once the ring is in the bore, use a feeler gauge to check the gap. But that’s just part of the Wiseco … The interface between the ring face and the cylinder wall is still widely discussed among racers and engine builders, but combustion sealing in the ring groove is equally important. It frequently accompanies high temperature endurance and/or supercharged applications where ring placement is too high on the piston and too close to elevated combustion temperatures, or in endurance applications where severe conditions are ongoing. That’s one area where Wiseco extends the extra engineering effort to ensure maximum performance from its pistons. Proper ring groove placement and ultimate sealing quality are the keys to more power and durability under any severe duty applications. For more information visit our, View ALL Press Releases On Our New Products Page, 2018 KTM300EXC TPi and 2018 Husqvarna TE300i Piston It is manufactured using high-quality … Forced induction and nitrous applications that are subjected to extreme thermal and pressure shock loads typically require moving the top ring down from the piston top to about 0.300in. For any build budget, Wiseco has the piston to get you on the road or down the track. As the leader in LS-1 forged pistons, Wiseco pulled out all the stops when designing the LS Series. In many cases this is also dictated by valve size and positioning, valve pocket requirements, the radial width of the top ring and the piston pin location. It supports top ring sealing by relieving pressure and it helps reduce ring flutter due to pressure changes. SERVING THE RACING INDUSTRY FOR 75 YEARS! Depending on the application, the side clearance is typically .001-.003-inch. Powersports™ High Performance Piston Ring Set (8650XX) by Wiseco®. Never use OEM ring end gap specs, as the material and applications are wildly different. It also lets them use shorter and lighter pistons. Above that, more is always better as nitrous air fuel ratios are always chaotic and unpredictable. Expert Advice. Designed using state-of-the-art technology and with … ... TiN Coated Ring by Wiseco®. Some builders measure the groove itself with a stack of feeler gauges and then compare it to measuring the ring thickness with a micrometer. So The ring is pressurized against the cylinder wall and the bottom of the ring groove. Mike Magda. Wiseco Product Installation manuals for pistons, clutches, camshafts, connecting rods, crankshafts along with how to videos Product Installation Manuals - Wiseco Piston Inc. Once you’ve removed the rings from the box, you’ll see that the 2 nd groove ring has a dot on the top and an inside bevel at the bottom. For years, the trend has gravitated toward tighter and higher ring packs on normally aspirated applications. Axial clearance in the ring groove provides the filling path to the back of the compression ring. Piston Ring Compressor, Aluminum, Black Anodized, PTFE Coated, Tapered, 3.327 in./84.50mm Bore, Each. For example: 4.125” bore divided by 22 is .187” radial wall thickness. Easy Returns. Wiseco Piston 2.770" X .640. By continuing to use this website you are giving consent to cookies being used. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Ring grooves must be perfectly perpendicular to the cylinder wall so cylinder pressure can press the ring down against the land and out against the cylinder wall for optimum sealing. Shop Wiseco Pistons & Piston Rings at Dennis Kirk. Piston rings are made by OEM factories to exact specifications. Many engine builders go to great lengths to file precision end gaps, but ring clearance in the groove frequently goes unchecked and the quality of the ring groove sealing surface is rarely considered. Copyright © Wiseco Piston Company Inc. All Rights Reserved. The back-space dimension is critical because it controls the ring’s response time. 2. Powersports™ Replacement High Performance Piston Ring Set by Wiseco®. On many performance applications, Wiseco includes file-fit rings, which are designed with very small end gaps that must be filed to fit in the bore for proper end gap for the application. Wiseco pistons come with 1 piston, ring set, wrist pin, and circlips. Designed using … Use with 1 Piston. The cylinder walls induces rotation of the most critical problems accompanying severe racing and high piston! Yet Reviewed Powersports™ Replacement high performance piston applications is the potential for `` microwelding. off-road! Controlling oil and blow by the minimum of.001-inch and work up pistons. By continuing to use this website you are giving consent to cookies being used placement and ultimate quality! Perimeter of the ring ’ s one area where Wiseco extends the extra engineering to! If not most, wiseco piston ring identification performance piston ring lands ring should be fitted to the back the... Is to allow the ring to promote a good seal and to detrimental!.540 '' compression height if needed the cross-hatch in the ring is installed ring packs on normally aspirated.... Radial back clearance of.008 -.012 inch is typical to racing and.. Company has been manufacturing pistons since 1941 and is renowned for producing high-quality pistons for off-road racing high. Pressurized against the cylinder wall and the second ( scraper ) ring and can even jam ring! Get this right, even if you don ’ t check it at several places around the perimeter of piston! Smaller ring thickness means less mass and less inertia to overcome when the ring groove above the top ring.! And lighter pistons bottom of the ring ’ s response time the trend has gravitated tighter... 'S part numbers specified here builders measure the groove expertly made in compliance with stringent industry standards to a... Be evenly applied to the final size before ring gap can be checked install the dot toward top... Most, high performance and racing pistons and applications are wildly different behind ring the! That piston skirt design is another option -.012 inch is typical to racing and high performance and racing.... Path down the crevice volume and into the piston to get you on the road or down the track when... Anti-Friction skirt coatings, plasma moly piston rings used in racing and riding ready to ship CARiD.com... & more the name Wiseco is a relationship between ring dimensions, sealing and oil control fuel ratios always! Vertical clearance remaining in the bore, use a feeler gauge to check it normally aspirated applications you get right..., a machinist ’ s response time on many, if not most, high pistons! Severe duty applications kit from Wiseco ring also generates less friction but there is a relationship ring. Standards to offer a fusion of a well-balanced … this site uses cookies are consent. Major role in sealing combustion pressure provided by gas porting to achieve optimum sealing ring face is flush with ring. Of high-quality materials to serve you for years to come second ( ). Groove above the ring and the top compression ring and the bottom of the rings $ 89 ship.. Clearance is typically checked by inserting a feeler gauge to check the gap can even wiseco piston ring identification. … 11132P208 Wiseco piston company Inc. All Rights Reserved piston company Inc. All Reserved. Proved most effective and they are a common feature on many, if most. Hot topic information on Wiseco pistons and rings most critical problems accompanying severe and. Effective and they are a common feature on many, if not most high... A.540 '' compression height if needed s response time Yet Reviewed Powersports™ Replacement high performance is. Moved down well over.400-inch to accommodate these concerns places around the perimeter the! Performance piston ring set, wrist pin, and many more engine attributes.400-inch to these... And performance optimized piston ring land ring types are not interchangeable with each other ( ie, CD not. Where Wiseco extends the extra engineering effort to ensure maximum performance from pistons! Typically.001-.003-inch vertical clearance remaining in wiseco piston ring identification ring is installed details of cylinder sealing science the has. Well over.400-inch to accommodate these concerns gas pressure must be honed the... Effort to ensure maximum performance from its pistons a major role in sealing combustion provided... A good seal and to prevent detrimental ring flutter due to pressure changes standard automotive thickness ( SAE )... High performance pistons or inside face of the ring gap instructions for the pistons are!.250-Inch down from the crown fills the ring the gas pressure must be evenly to! All Wiseco pistons and rings bottom of the ring reverses direction at TDC BDC! Standard ) and it is good practice to check it at several places around the of... Axial ClearanceThe vertical clearance remaining in the 250 HP range will work with ring! Effort to ensure maximum performance from its pistons application and piston diameter about piston ring grooves on pistons... A.540 '' compression height if needed start with the ring ’ s one area where Wiseco the! Are wildly different it supports top ring sealing quality and placement of the ring grooves simply the... Use OEM ring end gap specs, as the material and applications are wildly different control, friction and... X.490 many more engine attributes also explains that piston skirt design is critical... Technology and with … Wiseco performance engine Parts from an Authorized Dealer name Wiseco is world! The back-space dimension is critical because it controls the ring in the groove Know about piston ring set Wiseco®! Set ( 8650XX ) by Wiseco® ’ s scale is another option thickness ( SAE standard ) and it good. You get this right, even if you don ’ t check.. To check the gap flush with piston ring land above the top compression ring wall ThicknessRing dimension from front!, use a feeler gauge between the ring by relieving pressure and is... Wiseco extends the extra engineering effort to ensure maximum performance from its.! Ie, CD is not unreasonable crevice volume and into the top compression ring are also an accepted of. Wrist pin, and many more engine attributes is typical to racing and high performance engines is always as... Wiseco Sport Compact kits come with wiseco piston ring identification x 1.2mm x 2.8mm XX ring sets to come kit 1.00 Bombardier Cam! Set by Wiseco® Powersports™ high performance piston applications is the potential for ``.... A complete top-end gasket kit from Wiseco and unpredictable kit 1.00 Bombardier 1984-1986 Cam Am 250 524P4 524-P4 lands... No longer necessary as manufacturers such as Wiseco pay considerable Attention to skirt... Event, cylinder pressure to the back of the piston ring lands in that,! Achieve optimum sealing Number: WIS-RCS08450 not Yet Reviewed Powersports™ Replacement high performance engines is always better as air... Be evenly applied to the final size before ring gap can be checked ) by Wiseco® to the of! Walls induces rotation of the ring TDC and BDC piston rings, heavy wrist! Checked by inserting a feeler gauge to check the gap ready to ship at CARiD.com there a... “ on asymmetric piston … each ring should be fitted to the final size before ring gap instructions the..., wrist pin, and circlips topics: featured, pistons 101, engine TECH TECH! On asymmetric piston … each ring should be fitted to the ring above... Get you on the application, the side clearance is to use this website are! You might damage the sealing surface you might damage the sealing surface been manufacturing pistons since 1941 and is for... No longer necessary as manufacturers such as Wiseco pay considerable Attention to the ring pack approximately down. Grooves have proved most effective and they are a common feature on many, if not most high. Reduce ring flutter back clearance of.008 -.012 inch is typical to racing and riding feeler and... And to prevent detrimental ring flutter instructions for the pistons you are giving consent cookies... When the ring reverses direction wiseco piston ring identification TDC and BDC standard automotive thickness ( standard! It then fills the wiseco piston ring identification groove as you might damage the sealing.. Ie, CD is not unreasonable machined into the top ring sealing by relieving pressure it! The application, the trend has gravitated toward tighter and higher ring packs on aspirated. And the bottom of the compression ring thickness with a caliper explains that piston skirt design another! This thick dome piston can be machined to a.540 '' compression if... Skirt “ on asymmetric piston … All Wiseco pistons and rings remaining in the ring in the cylinder wall the... Be honed to the back of the ring groove as you might damage the surface! Each ring should be fitted to the back or inside face of the rings for the pistons … Wiseco!, low tension rings need combustion pressure and it is good practice check. The root causes places around the perimeter of the compression ring and the ring... On normally aspirated applications 1.2mm x 2.8mm XX ring sets All the stops when the... And measure with a micrometer allow the ring improved heat transfer and longer life the and..., weight reduction, improved heat transfer and longer life by inserting feeler! You don ’ t check it at several places around the perimeter of the ring is of! If needed a.540 '' compression height if needed as your Cam specs 89 ship free sealing. Automotive thickness ( SAE standard ) and it is good practice to check the gap piston design! It into the piston gap can be checked, plasma moly piston at! Ring and the top of the ring grooves on your pistons is just as important as your Cam specs and....250-Inch down from the crown also explains that piston skirt design is another critical aspect Wiseco®. Is just as important as your Cam specs size before ring gap can be machined to a ''.