US Spec 3.2L Compression Ration

[PK 77 911]

Is 130 to 135 across all 6 cylinders on a 1984' US spec 3.2L an okay compression or is that starting to get on the low side.

Thanks

[E Sully]

It is very low, but should run. Fresh after a rebuild mine was closer to 190.
1986 Porsche 3.2 Compression - YouTube

[Reiver]

Originally Posted by PK 77 911

Is 130 to 135 across all 6 cylinders on a 1984' US spec 3.2L an okay compression or is that starting to get on the low side.

Thanks

Hot/cold? A leak down will tell you more than a comp test.

[PK 77 911]

Cold.

[JAR0023]

As a reference point my 150k mile 86 is in the mid 170s. -J

[Reiver]

numbers will be less when cold but imo that's still on the low side...I'd have it done warm/hot and have a leak down done if you are doing a PPI

[PK 77 911]

Yes I think I will do a leak down test on it. Thanks for all the replies.