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#1
09-09-2008, 09:51 PM
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compression
i tested my 71 ys 400 compression today.
3 tries.numbers were about 150 on all cyls, two in the back went to 160. 80,000 miles. sound about right? what were they when new; and how low do they go? |
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#2
09-09-2008, 10:11 PM
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you are good. we should all be that lucky. as far as i know its the variance between cylinders that is an issue. i would think over time the numbers would actually go up on a good sealing engine because of carbon deposits over time......
__________________
1981 Trans Am project -YJ 400 stroked to 488 CID-74cc Eheads-10.95:1-Northwind Intake-Holley Terminator-TH400-Moser rear-Dougs Headers.... |
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#3
09-10-2008, 06:33 AM
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That sounds fine, put the v8 version of the product restore in with the oil and you will see those numbers go up!
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#4
09-10-2008, 12:34 PM
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Awesome. I like to keep cranking compression under 165 for pump gas and no timing or fuel, cam issues.
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