Exhaust Valve Hitting Piston. If you have insufficient clearance, the. Guys are getting into.800 lifts and don't have. .630 shouldn't be a problem. there are two ways to get it wrong. valve failures are often the result of detonation, poor quality or defective valves, a driver who’s zinged the engine, improper valve lash, or sloppy machining. Also on the piston surface, there is just an ever so slight etching in these matching areas. The first is usually catastrophic: exhaust valve to piston clearance decreases with cam retard usually at an appx rate of.007 to.010 per each. the piston is chasing the valve on the exhaust closing at 48 atdc. you can see the small area in the periphery of the intake valves where they hit the piston, the carbon buildup is rubbed off there. Valve seat concentricity is critical for proper alignment and a tight compression seal. as pointed out, piston in backwards is bad but should not result in the exhaust valves hitting the piston.
from www.hotrod.com
valve failures are often the result of detonation, poor quality or defective valves, a driver who’s zinged the engine, improper valve lash, or sloppy machining. .630 shouldn't be a problem. exhaust valve to piston clearance decreases with cam retard usually at an appx rate of.007 to.010 per each. Also on the piston surface, there is just an ever so slight etching in these matching areas. as pointed out, piston in backwards is bad but should not result in the exhaust valves hitting the piston. If you have insufficient clearance, the. Guys are getting into.800 lifts and don't have. there are two ways to get it wrong. The first is usually catastrophic: the piston is chasing the valve on the exhaust closing at 48 atdc.
Measuring & Setting ValvePiston Clearance An Advanced Guide
Exhaust Valve Hitting Piston as pointed out, piston in backwards is bad but should not result in the exhaust valves hitting the piston. Also on the piston surface, there is just an ever so slight etching in these matching areas. you can see the small area in the periphery of the intake valves where they hit the piston, the carbon buildup is rubbed off there. exhaust valve to piston clearance decreases with cam retard usually at an appx rate of.007 to.010 per each. The first is usually catastrophic: Guys are getting into.800 lifts and don't have. valve failures are often the result of detonation, poor quality or defective valves, a driver who’s zinged the engine, improper valve lash, or sloppy machining. If you have insufficient clearance, the. as pointed out, piston in backwards is bad but should not result in the exhaust valves hitting the piston. Valve seat concentricity is critical for proper alignment and a tight compression seal. .630 shouldn't be a problem. the piston is chasing the valve on the exhaust closing at 48 atdc. there are two ways to get it wrong.
