what is the compression on 9 to 1 je piston on b16a

 

1st 169 2nd 160 3rd 150 4th 160 is that about right

 

my bro's 94 ls is about 165 all across.. so i think thats right..?/..

 

the 19 psi difference from 1 and 3 seem to be a little too much.

 

+1

 

my compresssion on my z6 block/y8 head was 195 across the board, compression on that motor is about 9.5:1.... dunno if that help comparably to the 9:1

is it a fresh rebuild or how many miles on it, if its used?

 

well the motor is built 9to1 je piston /eagle rods/new all bottom bearing/ except blockguard thats on the block and the head crower spring and retainer and type r cams in the intake and gsr in the exhaust and all bolt on and its running 14psi

 

oh plus im running indyne catchcan and block the intake hole

 

the 94 ls has piston in it 9to1 or stock piston i think its a little bet different

 

I believe the compression numbers are only supposto be around 5-9 off from each other...

another thing, You need to list what block, head, crank, rods, pistons, bore, stroke, has the head been milled, has the block been decked, what size HG? There are wayyyy too many variables to guess what the compression in PSI is going to be for your setup.