View Single Post
spuggy spuggy is offline
Registered User
Join Date: Jul 2003
Location: Glorious Pac NW
Posts: 3,414
When I got my PPI (motor had a fresh top-end rebuild), all cylinders read 3-5% cold.

I was told "anything less than 10% cold is just fine".

When I asked what they did if any showed more than 10%, reply was "repeat the test hot - over 10% hot is NOT good".

Sorry, 19% cold doesn't sound great to me. I wouldn't think your oil temps in traffic have anything to do with this problem - unless they're outrageously high....

Personally, I wouldn't rebuild half the motor - although I might fix an issue with a single cylinder. But it makes little sense to fix one when you're going to be "right there" anyway.

P&Cs are almost certainly fine, might have broken rings, great opportunity to fit ARP rod bolts for safety and do the heads right; likely guides, maybe a set of valves.
'77 S with '78 930 power and a few other things.
Old 05-06-2013, 05:02 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)