Date:         Thu, 24 Jun 1999 08:01:51 -0700
Reply-To:     Tom Young <young@SHERLOCK.SIMS.BERKELEY.EDU>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Tom Young <young@SHERLOCK.SIMS.BERKELEY.EDU>
Subject:      Re: compression tests-- good enough?
Comments: To: "Brian W. Block" <bwblock@xoommail.com>
In-Reply-To:  <199906240147.SAA24362@www1.xoommail.com>
Content-Type: TEXT/PLAIN; charset=US-ASCII

BWB:

Based on the "After" specs below, the engine is still a candidate for
work given the difference between your high and low cylinders.  A "wet"
compression test and/or a "leakdown" test would help pinpoint where the
problem is (rings, head), but if you're committed to doing the work
anyway you could just figure out the problem after you've got the engine
apart.

Your compression on 1,2 and 3 is great given the miles on the car and the
fact that a "hone and ring" job isn't supposed to work on a VW.

On Wed, 23 Jun 1999, Brian W. Block wrote:

> Heres the good news: I did a before and after compression
> test, results of which are:
>
> Before--            After--
> 1    10psi          1    135psi
> 2    120            2    140
> 3    115            3    130
> 4    60             4    92
>
> So, everything looks pretty good other than #4 which is a
> bit low at 92psi.  Heres the question:  Does anybody think
> the 92 warrants further top end work?  If its going to need
> it within another 15k or 20k I'd just as soon do it now.
> van now has 150k on it, previous owner says he had
> cylinders honed and rings replaced at 80k.
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Tom Young               young@sherlock.SIMS.Berkeley.EDU
Lafayette, CA  94549    '81 Vanagon
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