cross posted on cvoh too fellas, but im in need of some insight here...
im at a loss here, the motor has 3200 miles on the stage 4 which included a mild porting, you can obviously see the valve guides have been busted since the install cause it has the same amount of carbon buildup due to the tune being out of whack, but what would cause this? bad install job? bad manhandling? no way it came back from porting with busted valve guides!!!!!
im just glad the exhaust valve guides broke and not the intake. pistons are spotless, but BOTH exhaust guides??
i came across this while looking at the exhaust flange gasket since i had the pipes off for something unrelated.. saw the damage clear as day from the exhaust hole
the only way i see this happenning is piston/valve contact, but when? valves are straight and seating, obviously i have the heads on the bench now and waiting for the new parts...
on the note.. any suggestions on guide installation? im old school, heat the head to 400+, freeze the guide overnight, bath guide in oil and tap in.. any other suggestions?
06-03-2019 | 04:07 PM
busted exhaust valve guides, 3200 miles
