Jim checks piston deck height with a dial indicator during mock-up. It determines piston depth in the bore at top dead center. Most machine shops do one bore. You should check all of them. Ideally, you want identical deck height on all bores. Record it on each cylinder.

I am not wrong

Dustin

 

play nice damnit!

 

You asked for deck height (crank c/l to top of deck), not PISTON deck hight (top of piston to deck), so you were wrong! There is a difference.

 

here is another web site



http://www.competitioneng.com/DeckHeight.htm

i guess the first few sentences are what you are looking for

 

You can also you a straight edge and feeler gauge to measure the DECK HEIGHT. Also you get a correct measurement you need to rock the piston push the top and get one number, push the bottom and get another.

Dustin

 

A 317 head has a 72cc combustion chamber and I'll be down to 67cc.

IIRC the LQ9 is 10.1:1 so if anyone can figure it from there.....

Slightly lower than I expected.

 

Well sorry, i figured people would know what i asked for, guess not!

Dustin