Bill,
I''m not an expert, but I did my own rebuild of my BJ8 engine a number of
years back. After I completed the rebuild it ran great for one season. The
following year I had what appeared to be a head gasket problem. When I
removed the head I discovered that one of my re-used head bolts had
literally snapped. I replaced all of the bolts with stock grade new bolts
and she's been fine for years now.
Just my experience.
Dave
64 BJ8
03 Mini Cooper S
----- Original Message -----
From: "WILLIAM B LAWRENCE" <ynotink@msn.com>
To: <healeys@autox.team.net>
Sent: Sunday, November 25, 2007 2:52 PM
Subject: [Healeys] OFF WITH HER HEAD!!!
> For the second time in about 3000 miles my 100 has blown a head gasket
> between #3 and #4 cylinders. I have the head off now and am having it
> surfaced. I've checked the block with a straight edge and feeler guage and
> it seems flat.
>
> That being said I have a few questions for those who may have insght into
> this problem:
>
> First: I notice that the combustion chamber and the cylinder are not quite
> the same shape which causes the head gasket (cut to match the block) to
> hang
> over into the combustion chamber by a few millimeters. That would seem to
> me
> to provide a potential hot spot for preignition, detonation (Hmmm!
> Afterrun
> anyone?) and a weak point in the gasket. Does anyone make a gasket that
> eliminates or minimizes this overhang or is materially superior to the
> Payen
> brand gasket that Moss normally provides? Does ayone make a steel gasket
> that doesn't cost $350?
>
> Second: I am thinking about buying and installing a set of high strength
> head bolts from Dennis Welch. Is there really an advantage to this? The
> original studs I am using do not seem to be stressed or stretched and the
> specified torque value doesn't seem capable of distorting them. I know
> that
> the head bolts in some engines are critical and need to be replaced
> anytime
> they are removed, but these don't seem to be in that category. Do the high
> strength studs allow a higher head torque to be used and if so what are
> the
> pros and cons?
>
> Looking for durability.
>
>
>
> Bill Lawrence
> BN1 # 554
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