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03-07-2006, 08:13 PM
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#1 |
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Registered User
 
Join Date: Apr 2004
Location: Sacramento
Posts: 3,737
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pressure info needed
When performing a cylinder pressure test. How low is too low? I know that if one cylinder has a lower pressure than the other s that it indicates a problem. But what should the pressures be? 350 motor stock bore/ heads.
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'72 2wd blazer, bagged w/ watts link & EDC '72 C10 "Lowered Farm Truck" STOLEN 5-18-11 '66 impala ht |
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03-07-2006, 09:32 PM
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#2 |
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Registered User
Join Date: Apr 2004
Location: Sacramento
Posts: 3,737
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Re: pressure info needed
I'm just looking for a range. I know that compression ratios changed a little through out the years. The block is on a 72 blazer- all stock
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'72 2wd blazer, bagged w/ watts link & EDC '72 C10 "Lowered Farm Truck" STOLEN 5-18-11 '66 impala ht |
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03-08-2006, 12:31 AM
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#3 |
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Senior Member
Join Date: Jan 2005
Location: SUNNY WARM BIKE RIDING COTTONWOOD ARIZONA
Posts: 2,097
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Re: pressure info needed
150psi+(just a guess on my part) with less than 10% difference in cylinders
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03-08-2006, 12:03 PM
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#4 |
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It's a catastrophic success.
Join Date: Jan 2003
Location: Oklahoma
Posts: 2,077
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Re: pressure info needed
The main thing is consistency,unless its smoking like a freight train and the rings are shot then check for a closeness between cylinders.Ratios and pressures will vary between engines but shouldnt fluxuate much between cylinders unless theres a problem.
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