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B-Series Compression Ratio Calculator.

engine. drivetrain. engine management & trouble codes talk.
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MagillaGorilla
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B-Series Compression Ratio Calculator.

Post by MagillaGorilla » August 07, 2003

I came upon this site a few months ago and it really helps when trying to get a good compression using OEM Honda parts. So for anyone trying to stay cheap on internals but make good power, this will help.

http://www.c-speedracing.com/howto/comp ... mpcalc.php

Just for reference the thinner the head gasket the higher the compression, due to the head being closer to the block. So if u get an insane compression just put on a thicker HG, and check the outcome.


-Eric :2:
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munster
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Post by munster » August 07, 2003

Thanks, Magilla. I knew you would make a good mod. *thumbs up*
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Turbogixxer
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Re: B-Series Compression Ratio Calculator.

Post by Turbogixxer » August 07, 2003

MagillaGorilla wrote:Just for reference the thinner the head gasket the higher the compression, due to the head being closer to the block. So if u get an insane compression just put on a thicker HG, and check the outcome.
Yes, To explain it more. When you put a thinner headgasket on. The cubic centmeters (cc) of the combustion chamber gets smaller(aka head is closer to the the block/piston). Now, this does look good and all and the performance is better, but as your head gets closer to the block, your timing belt gets looser. Now, you will only see a problem when you mill your head a lot, but these are things to think about. Also when you run a milled head and/or a thinner gasket, your valves are now closer to the pistons. With a high lift cams, this can spell danger. a little food for thought.
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Post by alexsracing » August 17, 2003

yea i don't recomend it
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MagillaGorilla
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Post by MagillaGorilla » August 18, 2003

What dont you reccomend?
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Turbogixxer
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Post by Turbogixxer » August 24, 2003

MagillaGorilla wrote:What dont you reccomend?
I think that he is talking about that those kind of calculators are not very accurate. I prefer the dial indictor method (and CCing of the head) then the clay method.
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kotomile
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Post by kotomile » December 20, 2003

It's fun for playing around with though!

I found the highest possible CR with that calc. :13.28

PCT pistons
GSR head
LS block
1 layer HG (duh)
81.25 bore
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BRYCE
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Post by BRYCE » June 09, 2005

wow great web page, what are PCT pistons out of??
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EF'nJDM
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Post by EF'nJDM » October 31, 2005

BRYCE wrote:wow great web page, what are PCT pistons out of??
Civic Type R I believe. I have a set sitting right next to me :P

OH BTW, my setup is:

PCT pistons (Civic Type R)
B18C5 head
B16A block
1 layer headgasket (Mugen metal headgasket)
81mm bore

=11.62 compression

w00t!
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illegal
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Post by illegal » November 03, 2005

I couldnt use it to do my engine.

This one is a better calculator I think. http://www.c-speedracing.com/howto/comp ... mpcalc.php
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