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Help with leak down numbers

Hello, fellow 930 owners. I love my 930 very much but as time goes on I wonder if my future involves expenditures other than a vintage Porsche. I recently had some minor work done on the car and had my mechanic do a compression and leak down test. these are the numbers and I am wondering if these are good numbers.

CYL 1, 115 PSI, 3% LEAKAGE
CYL 2, 110 PSI, 5% LEAKAGE
CYL 3, 115 PSI, 3% LEAKAGE
CYL 4, 115 PSI, 3% LEAKAGE
CYL 5, 115 PSI, 3% LEAKAGE
CYL 6, 110 PSI, 4% LEAKAGE

Any thoughts?

Tom G
Old 02-24-2014, 01:59 PM
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While the PSI are "low" (normally around 160 for a 3.2 NA), there is less than 5% differential between the high and low which is good.

This may be due to the way it was done (time on, temperature, gauge and so on).

As for the leak down, they are pretty good.

I'm sure that some Turbo expert will chime in.
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83 911 Production Cab #10, Slightly Modified: Slanted, 3.2, PMO EFI, TECgt, CE 911 CAM Sync / Pulley / Wires, SSI, Dansk Sport 2/2, 17" Euromeister, CKO GT3 Seats, Going SOK Super Charger
Old 02-24-2014, 02:43 PM
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Leakage( 5% and under) and compression (110-120) numbers for a turbo engine with a 7:1 static compression ratio are excellent.
Old 02-24-2014, 02:50 PM
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He can now relax...
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Who Will Live... Will See

83 911 Production Cab #10, Slightly Modified: Slanted, 3.2, PMO EFI, TECgt, CE 911 CAM Sync / Pulley / Wires, SSI, Dansk Sport 2/2, 17" Euromeister, CKO GT3 Seats, Going SOK Super Charger
Old 02-24-2014, 02:54 PM
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looks good. how many miles
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Old 02-24-2014, 04:03 PM
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Great numbers
Old 02-24-2014, 04:19 PM
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Thanks very much for your input. 77,000 miles on the odo. I feel better.
Old 02-24-2014, 08:58 PM
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