ok i know the jdm itrs in a b17a block are supposed to be 10.7:1 with no other mods done to the motor but this is with the pistons sitting 20 thou in the hole.... they stick out of the hole on my b17 with no decking does anyone have any idea what this would put me at with a bone stock head?! thanks!

 

they stick out about 10 thou..... btw

 

no love

 

It would be 11.69:1 for compression but why are they sticking up out of the bore? Did you use different length rods or something?

 

nope p61 rods...... compression height is taller on JDM itr's i just found that out today

 

bump it

 

12.47:1
b17 crank,rods,block,head.Three layer gasket.Pct pistons .010" above the deck.
http://www.c-speedracing.com
Glenn

 

i have the jdm itr's not the PCT's

 

Oops.Yah 11.69 like 00Red-SiR said.
Glenn