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Help me calculate my compression...

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Old 09-09-2005, 01:30 PM
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Default Help me calculate my compression...
I have tried calculating my CR 3 times and its coming out different from what I think it should be.
Setup 1:
3.905
3.622
54cc
-4cc
.045
.007 out of the hole

Setup 2:
3.905
3.622
51cc
-2cc
.045
.007 out of hole

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Old 09-09-2005, 01:46 PM
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http://www.c5frc.com/calculators/Com...Calculator.htm

I was trying to figure out the same thing. I have .035 off my AFR making 61CC and MLS .051 GM gaskets. Im at about 11:1 + or - .01
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Old 09-09-2005, 01:50 PM
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I don't like that calculator. Try this one:
http://www.rbracing-rsr.com/compstaticcalc.html
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Old 09-09-2005, 01:54 PM
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Philip, assuming you are using a 6.125" rod, I come up with 11.47:1. I also assumed 6cc valve notches.
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Old 09-09-2005, 02:34 PM
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Rods: 6.125
Valve notches are included -4cc for the 1st setup and -2cc for the second setup.
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Old 09-09-2005, 05:02 PM
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http://www.csgnetwork.com/compcalc.html
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Old 09-09-2005, 05:13 PM
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11.85:1 first combo
12.75:1 second combo
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Old 09-09-2005, 05:13 PM
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Phil, assuming a gasket bore of 3.910, 54 cc chambers result in an scr of 11.847
51cc chambers result in an scr of 12.743
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Old 09-09-2005, 09:46 PM
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setup 1: 11.8559877494529 SCR
setup 2: 12.7534655926209 SCR
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Old 09-09-2005, 10:18 PM
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Originally Posted by jrp
setup 1: 11.8559877494529 SCR
setup 2: 12.7534655926209 SCR


LMAO

Let me guess, you are an engineering student. Fresh or sophmore?

Sorry, I just couldn't resist...
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Old 09-09-2005, 10:19 PM
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Originally Posted by 10SECDWS6
LMAO

Let me guess, you are an engineering student. Fresh or sophmore?

Sorry, I just couldn't resist...
**** no, i just plugged the numbers into my CR calculator and copy/paste the number
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