[Vwdiesel] Should I Re-Ring?

[lbaird119 at aol.com]

  Since you'll have the head and pan off, I'd pull a piston and measure the end gap.  (pull top ring, put it in the cylinder then flip the piston, push down until second ring stops it, remove and measure the gap.)  I only say this because I had a rebuild where the rings wore excessively due to the shop not honing the bore coarse enough.  Otherwise I'd say you have no indications to need to look.

  Looks like you're leaking between #2 and #3 mostly with #2 possibly leaking a little into the water jacket but not enough to blow coolant.

  Never use oil on a hot compression test, especially on a diesel.  I had a 302 Ford fire on me and peg my gauge, a diesel certainly could.
    Loren



-----Original Message-----
From: Will Taygan <lists at alaskabiodiesel.org>
To: vwdiesel <vwdiesel at vwfans.com>
Sent: Tue, Jan 21, 2014 6:51 pm
Subject: [Vwdiesel] Should I Re-Ring?


(Crossposting from the Diesel-Vanagon group:)
Background: 82 Stock-ish 1.6NA - 2yrs+35k on bored +1mm rebuild.  Lost
oolant at 10k, lost oil pressure at 34k.  Still running.  Was running
ot on hills under load, replaced thermostat and radiator, helped (like
erfect) for a couple weeks, now running hot and cold every couple
iles.  Oil in coolant, replaced oil cooler, coolant tank stays full.
Plans: replace head gasket, swap oil pan for a turbo pan (a delayed
roject) and install new Peloquin trans coming this week from
ATransaxle.
** Compression 400,345,370,400 (HOT), 450,390,440,450 with a spoonful of
-cycle oil.  Is a +50psi with oil sealing like this expected on normal
ings, or would there be a benefit (or disadvantage) to putting new
ings in? 
Probably should have replaced the headgasket a long time ago, but my
ompression tester was broken, and it HAS been driving daily (though
ust on local roads, not the highway).
SHOULD I RE-RING?  I'll have head and pan off anyway, but it would be
n-rack with crank in.  I have another engine to rebuild when this one
ies, but I would really like to get this one in shape for summer.
Thanks for you opinions!  I have disassembled a bunch of parts engines,
ut have never done rings or put pistons back in.
Will in Alaska.

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