Actually what you're missing here is that you're running an 8.1 to 8.5
compression engine and the good numbers are not significantly differently
than the bad numbers.
Its called PARANOID MAINTENANCE.
In my ten years of running 83 Westphalia an 76 Porsche 912e I'm confirmed
that my engines never failed but I could have made the same miles with just
regular manual maintenance.
20/50 Wt isn't a fix. oil coolers aren't a fix................. it Sorta
breaks down to Desert Racer or East coats commuter.

Stan Wilder
Engine Ceramics
214-352-4931
www.engineceramics.com
----- Original Message -----
From: "tabe johnson" <xtabe@YAHOO.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, January 25, 2005 11:40 PM
Subject: How does a leak down tester work???

> I understand the idea behind leak down testing but
> have questions for someone who's actually used a
> leak down tester before.  I haven't.
>
> To get your % leakage number, do you just pressurize
> the cylinder, cut off the airflow,  and measure the
> pressure after, say, one minute of the air slowly
> leaking out of the cylinder?
>
> Or - Do you apply a constant pressure through a flow
> restrictor to the cylinder and measure the pressure
> on the cylinder side of the flow restrictor?  If so, how
> do you decide how large a restriction to use?
>
> What am I missing here?
>
> Thanks!
>
> --tabe johnson
> xtabe@yahoo.com
> Leaky Head Westy
>
> ______________________________________________________________________
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>
>
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