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cl8ton cl8ton is offline
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Join Date: Aug 2007
Location: The Golden State
Posts: 1,533
Dave I bought my 87 930 4 years ago in the low 40ís on mileage. Leak down was 3% across all 6.

I have 46k on the clock now and the dam thing pulls like an OX! No smoke on startup ice cold.
Like Bryan said anything south of 10% is just fine IF the car appears loved.

Funny you mention #6, I owned a new Boxster that bleed like a biotch through that cylinder, but only sometimes.
Mech told me that it depended on where the piston/valves were positioned when you shut the motor down :/

Good luck!
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Rod...
2010 - 997 PDK, Black on Black, Daily driver.
1987 - 930 Grand Prix White, Not looking for crazy HP, just harmony!
Old 11-15-2010, 09:41 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)