Steve;
        I like doing the compression check with a slightly warm engine.
Run it for three or four minutes. That way the rings will be oiled and
expanded. Some people squirt some oil in all plug holes to achieve
realistic seal. Personally I wouldn't worry about it. Try it again in
about six months and keep track.

Good Luck and Drive Safely
Ken Lewis
86 Crewcab,60 356
http://Neksiwel.20m.com/

On Mon, 17 Sep 2001 10:44:58 -0700 Steve Sullivan <steveis@SPEAKEASY.ORG>
writes:
> Just completed my first ever compression check on my 1.9L with 170k
> on it.
> Recently had a "bottom end" (why do they call it that?) job of
> re-ring, new
> rod bearings, and completely rebuilt heads. Am concerned about the
> readings
> I got, need you expert's help diagnosing results. (Not sure I have
> the
> cylinder numbers right.)
>
> #1 (RR): 152 psi
> #2 (RF): 115 psi
> #3 (LR): 160 psi
> #4 (LF): 131 psi
>
> According to friend Bentley, that's mostly within specs:
>
> Range
> Ideal: 145 - 189     My van: 115 - 160
>
> Minimum
> Ideal: 116     My van: 115
>
> Max difference between highest and lowest
> Ideal: 44     My van: 45
>
> The two front cylinders are low, the two rear cylinders are OK, all
> are low.
> What gives? After re-ringing the pistons, honing the cylinders, and
> rebuilding the heads (and a great break-in), shouldn't the readings
> all be
> correct? Or are my valves out of adjustment (haven't adjusted since
> assembly, been a couple thousand miles since)?
>
> Thanks for the help. Wanted your advice before calling the rebuild
> shop, so
> I know what I'm talking about.
>
> Steve
> Calvin, the 84 Westy
>
>
> Steve Sullivan
> Off the Map Consulting
> 1326 S. 13th St.
> Mount Vernon, WA 98274
> 360-428-7018
> steveis@speakeasy.org
>
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