if you take 20 thousand off the b16 head. The Combustion Chamber Volume
(cc per cylinder) is 42.70 ,what would be the cc per cylinder with 20 thousands taken off ?

 

wheres all the brains at tonight??

 

41.40 aprox

http://www.c-speedracing.com/h...c.php

 

how much would that bump the compression?

 

i think it bumps the comp by .2

 

more like .5-.6 higher c.r. from what i know, shaving a head 33 thou will add one full point of compression.

 

It will raise it by

0.658977783231917

 

how did you *** up with that # 41.40 i was just wondering.. So on my setup my cr is about 12.2 on 91 gas... why my **** has no detonation......???i have bin runing it for about 6 mounths now and no probs... shouldn't it have so detonation..

i have a friend with about the same set up and his has detonation all the time..and his timing is all the way retared... i just don't under stand...!!

 

if you are running moderate timing, you won't necessarily detonate.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by radeon &raquo;</TD></TR><TR><TD CLASS="quote">how did you *** up with that # 41.40 i was just wondering.. So on my setup my cr is about 12.2 on 91 gas... why my **** has no detonation......???i have bin runing it for about 6 mounths now and no probs... shouldn't it have so detonation..

i have a friend with about the same set up and his has detonation all the time..and his timing is all the way retared... i just don't under stand...!! </TD></TR></TABLE>

it's simple use the calculator

i can explain,but my english sucks

 

how can u measure how much as been shaved?

 

Talk to the machinist. Generally to make the surface flat they would only take off 2-3 thou. If you want 20 off, you would ask for it.