What does a PPI consist of?

[PcarPhil]

What does (or should) a PPI on a 911 consist of? I did a quick search and didn't find an answer.

Also, what is the going rate for a normal PPI on a 911?

I'm looking for specifics. Check for rust, look at condition of suspension bushings, etc. Basically a checklist of a complete PPI.

Thanks for the help,
-Scott

[MobileWrks]

Top to bottom. If anything is worn or old, should be noted..
Also some have the valve covers pulled off to check for broken head studs. Some also do a comp. test.

1.0 ppi
1.5 with comp.
2.5 hours to do all the above

[RickM]

In addition to the suggested compression test you'll want a Leak down test as well. Have them document the results of each.
You want the body and other "non-mechanical" structures inspected by an expert who is very familiar with the 911 as well. He'll should be able to read the history of the car like rings on a tree.

BTW, a carfax is a nice added touch as well.

[kstylianos]

From one of our own, Matt DeMaria.

Very complete list:

http://www.dorkiphus.com/porsche/showpost.php?p=25877&postcount=10

[Jack Olsen]

Another view from Pete Zimmerman, here.

[PcarPhil]

Thanks guys. This is exactly the info I was looking for.

-Scott