[s-cars] AAN compression question

James Murray (LMC) James.Murray at ericsson.ca
Thu Dec 12 18:25:38 EST 2002


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Factory specifications (according to Bentely) are between 9 Bar and 13 Bar =
and the wear limit is supposed to be 7 Bar, while max difference between cy=
linders is 3 Bar. In PSI that's between 130 PSI and 188.5 PSI, wear limit i=
s 101.5 PSI, while max difference between cylinders is 43.5 PSI. That's wit=
h a stock Engine, not sure what difference the RS2 makes, or should it? You=
 should do a leakdown test....

/J.

	-----Original Message-----
	From:	Adam Chovanak [SMTP:Adam.Chovanak at cw.com]
	Sent:	December 12, 2002 5:29 PM
	To:	s-car-list at audifans.com
	Subject:	[s-cars] AAN compression question

	I have a 137k mile '95 S6 which has had RS2 turbo and manifold, Hoppen 30p=
si kit, etc. installed for 90k+. It's still running great with no signs of =
problems, but a recent compression test revealed 105 psi on all 5 cylinders=
. I haven't yet done a leakdown and oil compression test, but do any lister=
s know what the factory values should be and what they might be with an RS2=
 exhaust cam?

	Adam
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