Wazup guys , I just order a new cam kit at MOTORSPORT AUTO and they told me that I need to check the Piston to Valve clearance , now can anyone tell me how can I do this I have an idea how to do it , but I was hoping that someone have used the kind of cam I using , The setup that I have in my car is stock , stock pistons , its not been rebore , an E31 head L24 block . The cam is a 560 lift and 290 duration , Im taking my head to the machine shop so I can get a better or higher compression ratio than stock , now can anyone help me here I'll apreciated , thanks ...

 

heheheheheheh. I go head and tell you, you won't piston will not clear the valves with that huge cam. Max lift for the stock uncut piston is .500" inch lift or so. flycut the piston you be good. To check the piston and valve clearance, you'll need play-do. yes "play-do" Put some on the top the piston and assemble the motor with head and timing chain. Don't forget the headgasket. turn the motor over to get the impression to the play-do. disassemble and measure the thickness of play-do. intake needs .080", and exhaust needs .120" clearance. (I'm not too sure about those number.) good luck