Hey, I have been searching through a ton of useless threads looking for the piston to valve clearance for a factory pistions and valves. I need to know if I have a virgin block and I have the head milled 15 Thousandths, do I have enough clearance with the factory head gasket? Please, if all you can answer is get a thicker gasket, dont answer. Thank you all if you can help.

 

Anyone?

 

I've had my head decked twice and I run the an OEM FelPro or similar head gasket. I'll get compression numbers soon, if you're interested.

 

How much did they take of each time? and the compression #'s would be wonderful, thank you tons

 

bump. . . Some one has to know how much can be saftly taken off a head.

 

bump for an answer as well.

 

From the Mitsubishi service manual.

 

thanks!

 

No problem.

 

so the machine shop removed 0.7mm off my warped head. No go? New cylinder head instead? What difficulties might I encounter if I went and installed it?

 

you should be fine.

especially since people run 11.4 mm lift cams & dont have v/p issues. that is a ~0.030" or ~0.75mm more lift than a hks type cam.

if your super concerned, you can run a thicker head gasket to make up for the differnce, then you'll get less performance from the engine due to the reduction of squish area / greater clearance between the outter portion of the cylinder head & piston.