Re: Analyze my static compression & leakdown #'s
[Re: T/A CARe]
#1126374
12/02/11 09:30 PM
12/02/11 09:30 PM
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Joined: Mar 2003
Posts: 4,848 Memphis
HemiRick
master
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master
Joined: Mar 2003
Posts: 4,848
Memphis
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Compression numbers are all real close this is good and leakdown is less than 10% also good. I'd say compression is not 10:1 for only 140 PSI. My 9:1 451 pumps up much more than this.
Take care, Rick 68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451
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Re: Analyze my static compression & leakdown #'s
[Re: lewtot184]
#1126376
12/02/11 09:42 PM
12/02/11 09:42 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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All good in the 'hood ex as said comp #'s are low. Alot of SCR #'s have not been actually measured/calculated & are lower than people think
live every 24 hour block of time like it's your last day on earth
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Re: Analyze my static compression & leakdown #'s
[Re: T/A CARe]
#1126378
12/03/11 04:33 AM
12/03/11 04:33 AM
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Joined: May 2008
Posts: 5,399 Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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It looks good! I guess nobody noticed your in Colorado Springs. Air pressure is only about 12.2 psi? Doing the dynamic compression calc backward with an intake closing point of 60 abdc, I get 10.25:1 static compression ratio?
If you were at sea-level (14.7psi), cylinder pressures would be about 169 psi.
Last edited by 451Mopar; 12/03/11 04:37 AM.
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Re: Analyze my static compression & leakdown #'s
[Re: RapidRobert]
#1126381
12/03/11 11:48 AM
12/03/11 11:48 AM
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Joined: Nov 2003
Posts: 12,494 Western Colorado High Desert
moparmarks
I Live Here
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I Live Here
Joined: Nov 2003
Posts: 12,494
Western Colorado High Desert
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Quote:
Quote:
It looks good! I guess nobody noticed your in Colorado Springs.
As double R would say, Ding Ding Ding I do believe we have a winna
Yep the 140's is pretty good for up here. Have seen most new factory motors hit the 160's here at 5000' I'd be happy with his build. Has good consistent numbers. He's at about 6000' over there in CS.
72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, . Moparmarks Parts & Restorations Desert Mopar Metal Grand Jct. CO 970-261-7039 http://moparmark.com/motormangj@gmail.com
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