Date: Sun, 8 Jul 2007 11:32:11 -0400
Reply-To: Benny boy <huotb@VIDEOTRON.CA>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Benny boy <huotb@VIDEOTRON.CA>
Subject: Re: Sudden head gasket coolant catastrophic leaking
Like i stated last week here, i just did one head this week with the engine
still in the van, it was OK since i did that engine 2 years ago and all
bolts were easy to remove, BUT! gravity DOSN'T work for you! and it take
some good practice and knowledge to do so.
As i am showing in that video (32 megs):
http://www.benplace.com/pistons_videos/piston4.WMV
It's way more easy when the engine is on the side on a engine stand.
The head i have done had a crack outsite, between one plug and one stud,
impossible to see with the human eye! Like Bob stated, even small crack
between valves can be fatal. So putting back old head is a risk. The worse
risk is that will working on the old heads and/or torking them back on the
engine you can dammage them.
Anyway, what i'm trying to say is that you are not sure if combustion
pressure push the outter gasket out of if just poor sealing was the problem?
I think it's very easy to install the outter gasket, dificult to go wrong. I
have seen heads without any sealing stuff on the the outter gasket last way
more than 1500k miles.
So i would blame a crack head my friend.
Regards, Ben
On Sun, 8 Jul 2007 00:06:12 -0700, Thomas Pfrommer <pfrommer@PHAS.UBC.CA> wrote:
>I sent them out for inspection and if necessary, machining. One little
>hair crack was welded/machined between the valves, but not at the
>failure position of the gasket. I don't recall, whether it was the left
>or right though any more.
>Other than this hair, the heads were in good shape.
>I used the VW gasket set, and the head gaskets from there. Together with
>this black paste, I put them together, don't recall now the name, but
>will find tomorrow.
>Does the classic problem occur also that late after a rebuilt?
>Well anyway it seems I did not seal this head very well.
>Thanks for the help
>Thomas
>
>Benny boy wrote:
>> What did you use between head gasket and head?
>> How was the old head before you put this one back in? Was it cracked, was it
>> tested?
>>
>> 2 reasons, bad sealing or bad/cracked head, period.
>>
>> A clasic problem!
>>
>> Ben
>>
>>
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