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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
XR75 High RPM Misfire
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[QUOTE="SHSPVR, post: 1419590, member: 73255"] Any time you add bit of oil to the cylinder and the psi gose up that good sign that it need be rebuild and 85 psi is a bit to low any way for it run rigth. 170 psi it about the rigth with fresh build motor I belive the stock piston had something like 9.0:1 or 9.5:1 compression back in day. Sound the like you need get it bore out for new Piston & Rings and have head done rigth not half a@@. How ever if want get some real performance parts Check out [url]http://www.powroll.com/[/url] or [url]http://xrminiracer.com/[/url] Back it day I help friend build up one we order ever thing from powroll we add High Lift Camshafts HD Valve Springs Wiseco 11.0:1 High Compression Pistons 20mm Mikuni Carberators and Intake Manifolds DG Performance Pipes Barnett HD Clutch kit Plus we made are own case savers for Stock XR frame [/QUOTE]
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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
XR75 High RPM Misfire
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