piston to valve clearance and head gasket?
few positive replies.
If you're off on cam phasing, pre-load, etc. you just might be in trouble.
There is an excellent procedure I picked up from here which allows you to
check PTV clearance using a dial, check spring and degree wheel.
Do a search for PTV and you'll see pages of good advice.
I agree with the adrenaline, nothing like physically checking. I'm getting my heads shipped fully loaded, so I hate buying a spring tool and check spring just to use them for verification, but it would be STUPID not to.


