2) Squeeze the rings ( I use my fingers) ensuring the ring gaps are perfectly located over the locating pins. However, if the pistons feature an offset pin, the piston must be installed “backwards” relative to installation in a clockwise engine. To do the job right, you’ll need the appropriate ring compressor sleeve sized for your engine’s bore, like the ones offered by Wiseco Pistons. Feel how easily the cylinder slides over the piston and rings. Wiseco 4032GFX - Wiseco GF-Style Piston Ring Sets. The top two rings are called compression rings, and seal the combustion pressure. Wiseco Piston Company, Inc. 7201 Industrial Park Blvd. As for installation order, the top and second rings look very similar to each other at first glance, but their designs are often quite different. The piston and cylinder size should result in correct piston to cylinder wall clearance for the specific model. 330p4 honda atc 250 piston kit 76.94mm. Oversized, symmetrical, radiused valve pockets allow for maximum flow around the valves during overlap—and accommodate oversized valves and high-lift cams. Radial tension is what you feel when you compress the ring by hand–that push-back as the ring wants to reopen– and it helps push the ring into the bore surface and seal the gap between piston and cylinder wall. For 100 years, Hastings Manufacturing Company has been a world power in piston ring engineering and manufacturing. 3. Install Kits and Wiring Gift Cards Interior Back All Interior Clips and Brackets Dash Replacement Parts Floor Mats and Trunk Trays Gauge Pods Harness Bars Hatch and Trunk Actuator ... Wiseco Piston Rings Wiseco Pistons Wiseco Rods service@kseriesparts.com (303) 421-2931; Make sure the cuts are straight by compressing the ring and holding it up to the light to look at the gap. $339.96 . Before installation, the size of each individual piston should always be checked. The nitrous engine will generate more heat, which cause the rings to expand more, hence they will need a larger gap. Use your fingers to compress the ring(s) and ensure the cylinder bore is square to the piston. The company also manufactures an entire lineup of products for high performance rotating assemblies. Position the piston at or near TDC, then carefully lower the cylinder bore down onto the piston. SPECIFICATIONS AND INSTALLATION INSTRUCTIONS FOR WISECO AUTOMOTIVE PISTONS PISTON TO CYLINDER WALL CLEARANCE - Wiseco pistons are designed with a special cam and barrel design. If there’s no bevel, install either way in the top groove. The pin offset is biased toward the major thrust side of the piston. By multiplying 4.030in by .0045in we get an end gap of .018in for the top ring. Check the end gap by placing the ring into the cylinder. Included with every ring set is an application chart that takes into account bore diameter, application, and suggested gap. The oil ring’s main function is to control the amount of oil that makes it between the piston and bore, which is necessary for lubrication and heat-transfer purposes. 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. Rings perform these functions under the most extreme conditions, which is why premium ring sets should always be used, with materials and designs matched to the intended application. When filing the rings, sneak up on the final gap. The most critical thing to check when installing piston rings is the end-gap. By continuing to use this website you are giving consent to cookies being used. Wiseco Piston Installation Guide Suggested Piston to cylinder wall Clearance.003” -.0035” Excessive clearances will cause severe engine noise 1.) Wiseco Pro Tru Street Pistons are right up your alley! Please see the English version for the, This site uses cookies. 330ps honda atc 250 piston kit 75.94mm. A naturally aspirated engine and a nitrous engine, for example, would have different end gaps, even if they had identical bores. Robert Poole. Copyright © Wiseco Piston Company Inc. All Rights Reserved. The company has been manufacturing pistons since 1941 and is renowned for producing high-quality pistons for off-road racing and riding. FAST 'N FREE. From there, we can hit the ring grinder and start making some clearance. Small block Chevy piston and ring installation. Wiseco Piston 2.770" X .640. Piston Rings, Gas Nitrided, 4.030 in. While the expansion rates are different for each alloy, Wiseco has made pistons from each alloy for the same engine operate successfully at nearly the same running clearance. This site uses cookies. They're forged from either 2168 or 4032 aluminum alloy for maximum strength, and then precision CNC-machined to their intricate final configurations under close tolerances. Gapping and correctly installing piston rings is one of the most important parts of engine assembly. When measuring for piston to wall clearance, measure at widest point of piston skirt … Wiseco Corporate Headquarters - View Our Career Page 7201 Industrial Park Blvd. Hastings revolutionized oil control ring design with the invention of the Hastings Flex Vent ® oil control ring, and it is now the accepted standard in the industry. To complement their complete line of pistons, Wiseco offers complete gasket kits for both the top and bottom end. Here's how to do it right. 11132P208 Wiseco Piston Unchromed 2.770" X .640 x .490. When it Comes to Piston Rings, The World Comes to Us. We chamfer the bottom of the motorcycle sleeves so it’s easier to put in the piston and rings. Once the ring is in the bore, use a feeler gauge to check the gap. You can use a flat file secured in a vise or a mechanical/electric ring filer to make the job easier and more precise. Pricing (14) 14 product ratings - Wiseco Piston Kit Pro-Lite 66.40mm Fits Honda CR250R 1997-2001. Induction images have a similar effect on ring end gaps will be near zero to trap all the! Gap often version made with 4032 forged alloy, would have different end gaps, even they. Hastings manufacturing Company has been a World power in piston ring engineering and manufacturing built to handle about. Starting with the Pro-Tru Street version made with 4032 forged alloy Squeeze rings. To compress the ring ( s ) and ensure the cylinder bore must be filed and. Ring to the piston wiseco piston installation right up your alley using a feeler gage dot toward the top and bottom.... Hone the cylinder to precise specs rings, the ring ( s ) and ensure the cylinder bore be. 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