Has anyone had their cylinder head decked? Mine looks like someone might have been a bit heavy handed while cleaning carbon from around the combustion chambers and I'd like to have it machined a bit before I reinstall it. The Clymer manual states that the head should be replaced if it's warped and doesn't mention machining as an option.
I don't need to take much material off at all, but I don't want to take any off if it will cause problems. Anyone here done this? Thanks.
I have every head I work on surfaced. I have had them cut down so much the intake seat is cut during the process. No problems doing it; it will raise you compression ratio slightly, but a minimal cut should not have any noticeable affect.
Randy - RPM
Prolly a good idea to double check your cam timing and p:v clearance afterwards, but beats having a warped head by half.
Quote from: andyb on December 07, 2010, 09:47:27 PM
Prolly a good idea to double check your cam timing and p:v clearance afterwards, but beats having a warped head by half.
Piston to Valve clearance is not an issue with stock pistons & cams; although it can't hurt to check, since there could be aftermarket parts involved.
Cam timing will be a little retarded as the head got a little thinner and the cams are now close to the head rolling them back slightly.
If the minimum is removed to just clean clean the surface it should not be anymore than .004 and the cam timing will only change approx .5 degrees, so not any real need to adjust to the cam timing.
Randy - RPM
Thanks, that's good to hear. I'll be talking to my machinist.
QuoteI have every head I work on surfaced. I have had them cut down so much the intake seat is cut during the process. No problems doing it; it will raise you compression ratio slightly, but a minimal cut should not have any noticeable affect.
Randy - RPM
I did this last month.. I'm currently rebuilding the motor. I haven't started the motor yet. Any feedbacks on this? advantages and disadvantages?
I did this because the #3 piston has hit one of the intake valves at high rpm. I had the head resurfaced.