Date:         Sun, 3 Jun 2007 19:09:04 -0400
Reply-To:     Benny boy <huotb@VIDEOTRON.CA>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Benny boy <huotb@VIDEOTRON.CA>
Subject:      Re: What's Wrong With my Compression?
Comments: To: David Kao <dtkao0205@YAHOO.COM>

Hi David, i a'm the one who told so about me stop checking all new COFAP
pistons kit. I have checked more than 10 before i stop checking, i still do
it once in a wile. As for now, i had good result with those and nothing bad
to say about it.

150 sound very good for news one, 90 is kind of strange, even if all ring
gap were align, you should be close to your 150, have a leak down test done,
no way out. I would blame the EX valve on that #3... but hey, who knows!!!

Ben

On Sun, 3 Jun 2007 11:44:58 -0700, David Kao <dtkao0205@YAHOO.COM> wrote:

>Before I dropped the engine to replace the liner the #1 and #3 had a
compression
>of 90 PSI only. The engine consumed a lot of oil and was powerless before the
>the rebuild. All other 2 were around 120 only. I believed I needed a new set of
>liner.
>
>I checked quite carefully the heads before installing them. They were put on my
>westy by a VW dealer 30k miles ago. I also have a set of used AMC heads for
>comparison. The rebuilt heads from VW showed virtually no valve guide wear and
>no damage that can be visually seen.I lapped them really well and my alcohol
>leak test showed no leak before I put them on.
>
>Do you think I still need more miles to make the rings on #3 to seat? I
have had
>only 250 miles on them. Am I worrying anout it too early?
>
>David
>
>
>
>
>
>
>--- Kenneth Lewis <kdlewis@NORTHSTATE.NET> wrote:
>
>> David,
>> What was the compression before you started? A leakdown test might narrow
>> down the problem area. For instance, the exhaust valve might be going out of
>> round.
>>
>> Ken Lewis
>> http://neksiwel.20m.com/
>> Vanagon mods, tech info and O2 sensor help
>> O2 Sensor monitoring Gadget sold here
>>
>
>
>
>
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