hey all, I've been reading post after post doing research and i'm getting confused. The C-speed calc says that CTR pistons in a B18C1/C5 yield 11.751778779507741:1 compression ratio, but why is everyone posting that it will yield anywhere from 12:1 to 12.5:1...who is right...i'm i setting up the calc wrong?

SETTINGS:
Block: B18C1/C5

Head: B16A/B18C5

Pistons: pct B16B

Headgasket: OEM 3 layer

Piston to deck height: B18C1/C5


Also...is a 11.8:1+ compression ratio to high for texas weather even if it was tuned?

Thanks in advance!

David

 

Set piston to deck height to 0.00 and try again.

 

oh..is that another dallas Type R i spy ?

 

CTR pistons in a B18C1 and a B18C5 will be quite diffferent.

 

Should be 12.07013014931 blah blah @ 81.25 bore.

Paul

 

i live in south texas running 12:1 C/R and i have no problems so far...just get it tuned

 

setting piston to deck height to 0.00 makes the compression 12.9 to 1 ...thats alittle high isn't it?

 

What the max i could adjust the cam gears in a ITR with B18B pistons and Skunk stage two cams?