Compression Question

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Jul 5, 2005 | 06:35 AM

XTrooper

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From: NE PA

Compression Question

I have 241 heads on my motor that have been milled .035" (.030" originally, then a later .005" freshening). Can someone tell me my approximate compression ratio with stock heads and gaskets? Thanks!

Jul 5, 2005 | 06:51 AM

smask04C5

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From: Winter Haven, Fl.

click on jrp faq page and pull up the engine compression calculator. based on your figures and assuming pistons are out of hole .007 cr is approx. 11.2:1

Jul 5, 2005 | 07:02 AM

XTrooper

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From: NE PA

Ok. Thanks for the tip and the information!

Jul 5, 2005 | 08:26 AM

PREDATOR-Z

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From: BFE

I only get 10.8:1 SCR
This is the calculator:
http://www.c5frc.com/calculators/Com...Calculator.htm
.007 out of hole piston
.053 graphite gasket
60.84 CC head

Jul 5, 2005 | 02:15 PM

wallstAL

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From: Tinsel Town, USA

Here is another one!!

http://www.rbracing-rsr.com/compstaticcalc.html

Jul 5, 2005 | 02:54 PM

XTrooper

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From: NE PA

Quote:

Originally Posted by PREDATOR-Z

I only get 10.8:1 SCR
This is the calculator:
http://www.c5frc.com/calculators/Com...Calculator.htm
.007 out of hole piston
.053 graphite gasket
60.84 CC head

Using that calculator, that's what I get also, 10.8:1.

Jul 5, 2005 | 03:00 PM

PREDATOR-Z

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From: BFE

See, the calc uses correct specs to .001 of an inch. not rounded off figures.

Compression Question

Compression Question

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