PennyWise

I had a PPI done by our Porsche centre a 92 968 with 112 500 miles.

These are the numbers: (Sea Level) Any comments are welcome.. based on these, I need to make decision to buy or not. Thanks

Compression Test - dry
Cold
Cyl1 1300 kpa - 188.5 psi
Cyl2 1325 kpa - 192.1 psi
Cyl3 1275 kpa - 184.9 psi
Cyl4 1275 kpa - 184.9 psi

Hot
Cyl1 1275 kpa - 184.9 psi
Cyl2 1300 kpa - 188.5 psi
Cyl3 1250 kpa - 181.2 psi
Cyl4 1250 kpa - 181.2 psi


Compression Test - Wet
Hot
Cyl1 1400 kpa - 203 psi
Cyl2 1400 kpa - 203 psi
Cyl3 1450 kpa - 210 psi
Cyl4 1400 kpa - 203 psi


Leakage Test - Dry
Cold
Cyl1 20%
Cyl2 16%
Cyl3 24%
Cyl4 22%

Hot
Cyl1 12%
Cyl2 14%
Cyl3 18%
Cyl4 19%

Leakage Test - Wet
Hot
Cyl1 12%
Cyl2 10%
Cyl3 12%
Cyl4 14%

968workaholic

The leakage numbers are a bit high. If you can talk down the seller a few thousand, it would cover the cost of freshening up the head. Any records of what had been done to the car by the previous owner?

PennyWise

Full bottom end rebuild due to oil starvation. Hence my top end check. will speak to the workshop tomorrow