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-   -   What are good compression ranges for a 85/2 944? (http://forums.pelicanparts.com/porsche-924-944-968-technical-forum/399588-what-good-compression-ranges-85-2-944-a.html)

tryangles 03-21-2008 06:59 PM

What are good compression ranges for a 85/2 944?
 
Any idea??

Razorback1980 03-21-2008 07:35 PM

What the number is isn't really important. What you are looking for is all cylinders being relatively close to the same. I can't remember what my 86 was but I'm thinking anything over 150 should be ok.

tryangles 03-21-2008 07:53 PM

Quote:

Originally Posted by Razorback1980 (Post 3842354)
What the number is isn't really important. What you are looking for is all cylinders being relatively close to the same. I can't remember what my 86 was but I'm thinking anything over 150 should be ok.

Well, my father did the compression test, and he said that the compression was within 10% of eachother, but I believe the lowest was around 130-135. Is that really bad??

Razorback1980 03-22-2008 09:05 AM

If they are within 10 percent, you are ok. What you don't want is three at 135 and one at 80. Then you have some work to do. He should also run the leak down test though because the head gaskets are getting old on these cars and they can form leaks and cause problems. The compression test is only half the story.

tryangles 03-22-2008 11:25 AM

It looks like the PO rebuilt, or at least replaced the head gaskets and seals. I can see the red sealant around most of the gaskets on the engine. I guess I won't find out how well of a job he did until I get it running.


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