Compression test - Team Camaro Tech
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post #1 of 3 (permalink) Old Apr 2nd, 03, 01:46 PM Thread Starter
 
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Doing this cold right now.

I'm thinking that 140-150psi is what it's supposed to be. I can't find it right now in my books.

So far -
No. 2=100
No. 4=110
No. 6=80
No. 8=90

Will try it warm tomorrow night with a squirt or two of oil into each cylinder

461 heads, if that makes any difference.

It's not burning any oil at all.

May end up being a weekend of pulling heads.

Thanks, Randy

[ 04-02-2003, 05:36 PM: Message edited by: 67RSM3 ]
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post #2 of 3 (permalink) Old Apr 2nd, 03, 02:20 PM
 
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100-110 sounds like 8.5:1 compression.

160 would be more like 9.2-9.4:1.
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post #3 of 3 (permalink) Old Apr 2nd, 03, 02:21 PM
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To get accurate comparative readings, a compression test needs to be done with the engine warm, throttle blocked wide open, and 4-5 compression strokes for each cylinder being measured. [img]graemlins/thumbsup.gif[/img]

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