I need some info on tolerances for valves. The car is a 91 civic DX, stock everything @ 128,000 miles. The timing belt skipped 1 tooth and car died.

The head is off and disassembled.

The valves were ground (mildly resurfaced). I have checked all valves' faces and all except 2 were at or less than 0.001". The 2 that seemed fucked up were the #4 and #1 cylinder intake (only on distributor side). These were about .0023" out.

The guides seem to be ok.

So the tolerances that I need to know are:
Valve face (where it meets the head)
Valve stem / guide clearance.
Valve stem itself

I need tolerances in inches.

Thanks in advance,
Ryan

 

bump

 

Somebody has to know. I am getting ready to put the head back together, and I really just want to double-check myself. Any thoughts from anyone who's did a valvejob of any sort will be appreciated.

Thanks again,
Ryan