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pistons

this is what happens when you dont know the full background of your car. it was milled once before and i didnt know. had put a new autocross cam in and had it milled, 2nd time, and now all valves are bent.

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Replace the bent valves, clean up the dents on the piston tops, and MODIFY the timing gear to get the cam back into proper timing with the crank. Don't forget to inspect the rocker arms on the valves that got bent, its possible to crack them when valves hit pistons. Nothing bad wrong with milling the head twice. Unless it was milled a bunch, like .050" each time. The valve nothces can be increased. On a cam that is heavily reatarded will have the exhaust valve stay open longer... meaning more lift at TDC. So correcting cam timing will reduce the likely hood of exhaust hitting the piston tops.
 

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