i was wondering if 11.5:1 whould be enough compression to make good power with a set of toda C's

reason i ask is cuz i found one of those compression calculators, and im in the middle of rebuilding my itr motor, and it was sayin that with a stock itr head, stock itr bottom, itr rods, jdm itr pistons, and a 2 layer head gasket my comp will be at 11.5:1, now im thinking that should be enough but i could be wrong


thanks for any info

 

That would be fine, you would be fine to go a bit higher though. You could use Civic Type-R pistons with a multilayer (4-layer) headgasket. You'll have just under or around 12:1CR, which would still be plenty safe, but would give you more CR to work with.

 

be careful with the thin headgaskets.... they give you less room for valve to piston and could result in contact - especially with big cams like these (I also have toda C's ). clay your motor if you go this route.


Modified by Black R at 3:05 PM 6/24/2007

 

Why not try and compute for your dynamic compression? Google it and you'll get a few pages on calculators. But you'll need the ABDC of the Toda C. My guess is at least 12.5 static cr. When I did mine for my Jun 3's 12.7 static cr was just right for me. The Toda C's have bigger primaries and bigger VTEC lobe so it would need more static cr. I think the general rule is to have a 15% increase in dynamic cr. So you'll have to compute the stock dynamic cr too. Hope this helps.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Black R &raquo;</TD></TR><TR><TD CLASS="quote">be careful with the thin headgaskets.... they give you less room for valve to piston and could result in contact - especially with big cams like these (I also have toda C's ). clay your motor if you go this route.


Modified by Black R at 3:05 PM 6/24/2007</TD></TR></TABLE>
Clay the motor for Toda Cs? I mean being safe is being safe and I've only really heard of people needing to Clay for D and J4s and some of the other bigger cams.