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