Originally posted by alternativeauto
I never said his was 10.4, just stated that 260 was 10.4-10.6 on a B-Series Vtec with stock cams. Meaning your typical B16, 17, or 18 Vtec. That is why I previously asked for the set-up. I know the above is correct do to recent experience, compression checked 2 customers cars, both JDM GS-R's, one with stock cams was 270-275 and jdm gsr's are 10.6:1 motors. And checked one with a Type-r Intake cam and his was 260. Most stock USDM GS-R's and B16's I have checked are all within that range also. When you stroke a motor (I.E. LS Vtec, the poor mans stroker motor but very affective for the cost) , a piston that will may only produce 10.6 may easily produce over 11.0:1 as the link I posted for the compression calculator shows. Not trying to call you out but don't try to make my information look incorrect. I hope the link to the compression calculator is useful to help end some disputes. It's one of the most simple ones I have found to use and with checking it against other methods it appears to be correct.
does somewhere in there really say 270-275 for jdm Gsr
owell yes like i said with your head milled your around 12: with aftermarket pistons