B18b with CTR pistons and a pr3 head. compression somewhere 12.8:1 with oem headgasket
Would it be safe to double up on oem headgaskets and bring it down to 12.1:1?
I also saw the toda 1mm gasket which would get me around 12.5:1. even at this range soo much timing would be pulled that the combination would not work.

I am going to be running 91 pump gas.


NOTES:
Can I Use 2 OEM Headgaskets stacked in order to lower my compression.
91 octane 12.8:1 is too high.

Quote, originally posted by Altered »

What you are looking for is the actual compression height of the CTR pistons, the compression calculator is correct but the info on the CTR piston is not. They did not factor in the higher compression height of the CTR piston. Once you have the compression height you will be able to calculate the correct compression ratio for CTR pistons in any head/block combo.


Quote, originally posted by omniman »

lsvtec with b16 head and ctr pistons
head Gasket 2.8cc big vol= 497.6cc
piston dome vol. 6.3cc small vol= 39.2cc stock lsvtec=12.7
camber vol. 44cc
deck height .25mm 1.3cc
cyl vol. 458.4cc



Is it safe to run two stock oem headgaskets in order to lower compression?

 

i would suggest get a aftermarket headgasket to make your comp. go lower, I wouldnt use two stock ones...

 

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