Date:         Thu, 2 Oct 2003 14:03:52 -0700
Reply-To:     Felder <felder@KNOLOGY.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Felder <felder@KNOLOGY.NET>
Subject:      head post-mortem, and a question
Content-Type: text/plain; charset=US-ASCII; format=flowed

I've posted this to a diesel list, too, but since some of you have
offered advice about my #1 head stud popping block threads I thought
I'd pass along what I know. And a question, too.

I got several emails saying that what I probably did is left oil down
in the bolt hole and pressure-blocked the head stud, hence the pulled
threads. I checked and that is not the case at all, there is no oil in
the hole.

Secondly, I checked that the thickness of the block FROM THE BED OF THE
HEAD WASHER to the the block mating surface was the same as my old
head. It is.

Third, I noticed that the last two thread turns of my removed head stud
are full of iron from the block, so I assume that it was only grabbing
2 threads when it popped.

How long is the threaded part of the stud supposed to be? Mine measures
113 mm.

How many threads does a "normal" torqued head bolt require? Might one
insert a shorter washer to reach a few more threads, or would a stud
longer than a normal bold do the trick? Studs might be a problem with
the engine in the car because of the angle.

Thanks,

Jim