[s-cars] Valves or rings or both

[Vincent Frégeac]

Yes. Water and oil stabilised around 90C each.


Vincent


2007/8/2, calvinlc at earthlink.net <calvinlc at earthlink.net>:
>
> Did you do the compression test with the car warmed up?
> --Calvin
>
>
> -----Original Message-----
> From: s-car-list-bounces at audifans.com
> [mailto:s-car-list-bounces at audifans.com]On Behalf Of Vincent Frégeac
> Sent: Thursday, August 02, 2007 7:10 PM
> To: s-car-list at audifans.com
> Subject: [s-cars] Valves or rings or both
>
>
> Hi,
>
>
>
> After some part swapping, the S-Bitch finally gave her last word : The hot
> start problem I've had for a few month is simply a way too low
> compression.
> There's apparently only 1 piston above 150 psi, the lowest one reading 70
> psi dry, but I think the gauge is not that accurate! As I've been almost
> only driving in heavy traffic during the last 12 month, it was hard to
> notice the lack of power I could not use anyway.
>
>
>
> Remembering the numerous mechanical adventures I shared with the S-Bitch,
> I
> think this may be related to a bad head rebuild 3 years ago.
>
>
>
> When I tested the compression, wet and dry, the compression was 10-20 psi
> better with oil in the cylinder which tends to say valves and cylinders
> leaking. But I've read in a few places that a leaking cylinder ring will
> burn oil and the S-Bitch burn less than a ¼ quart between oil changes. So,
> can I expect just a head rebuild – may be worth it – or should I prepare
> for
> a full rebuild – which will probably means the S-Bitch will be parted out
> instead.
>
>
>
>
>
>
>
> Vincent.
>
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