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Join Date: Aug 2004
Location: LaGrange-Chicago Land
Posts: 190
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compression
Idealy, what should the compression on my pistions be? I have a 1985.5 944.
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1985.5 Stone Grey 944-SOLD 1987 Yellow 951- For Sale |
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09-17-2004, 02:27 PM
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Join Date: Nov 2003
Location: Calgary, AB
Posts: 1,883
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Are you looking for a compression ratio, or compression numbers when you do a compression test?
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2010 Hyundai Elantra Touring, GLS 5 speed, Indigo Blue Metallic. 2.0L of Korean fury! Buy my parts! |
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09-17-2004, 07:19 PM
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Location: LaGrange-Chicago Land
Posts: 190
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compression numbers when you do a test
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1985.5 Stone Grey 944-SOLD 1987 Yellow 951- For Sale |
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09-18-2004, 07:15 AM
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umm I cant remeber but I think its like 150-180psi or something like that
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1986 951, Stock for now. ]87 924S Gaurds red- SOLD after 11 years of ownership |
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09-18-2004, 10:52 AM
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Posts: 335
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I would say around 140-150 psi for a turbo, and 190 - 200 psi for a NA.
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09-18-2004, 02:27 PM
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Location: Calgary, AB
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Good numbers would be 180+, if you're over 200, you're laughing. I don't know if the early's have that high of a compression ratio though, so 180+ would be good.
If you're under 150, it's getting close to time for a rebuild. If you're below 125, it's done for. If you see more than 10% variance between the cylinders, do a leakdown test. FWIW, mine are all between 90 and 100, and it still drives!
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2010 Hyundai Elantra Touring, GLS 5 speed, Indigo Blue Metallic. 2.0L of Korean fury! Buy my parts! |
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09-18-2004, 10:36 PM
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Dog-faced pony soldier
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Could be a Euro-spec car.
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A car, a 911, a motorbike and a few surfboards Black Cars Matter |
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09-19-2004, 03:52 AM
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1987 Porsche 924S 2.5 modified
