Dave,
This is normal. My car is the same way. I believe it's because these
heads were used on a variety of blocks that had different water
jackets. The fact that your coolant passages from the head "dead end"
into the block is not a problem, and will not cause the head gasket to
blow.
Tim Holbrook
1971 TR6
--- Dave Mahlmeister <dmahlmeister@peoplepc.com> wrote:
> Hi everyone,
> I really need some help on this one. I pulled my head
> yesterday to replace a blown head gasket. (Long story.
> My engine had overheated and I had steam coming up
> through my head bolts and exhaust.) When I started
> cleaning up the head and fitting a new gasket I noticed
> that the gasket matched all the coolant openings on the
> block hole for hole. On the head it was a different
> story. There were more openings in the head for
> coolant to feed through then in the block. On the carb
> side of the head there is a hole between each cylinder
> for coolant and on the dizy side there is a hole
> between the 2/3 cylinder and between the 4/5 cylinder.
> That's a total of 8 holes. On the block I only have 2
> holes between the cylinders and they are on the carb
> side between the 2/3 and 4/5 cylinders. It's no wonder
> that the gasket blew. Both head and block match for the
> large openings in the front and back. So there are 5
> holes in the head that just "dead end" at the block. To
> give you some background I rebuilt the engine several
> years ago and noticed that someone else had been in
> there. I know the engine is not original to the car
> which is a 72 and I suspect that the head is not
> original to the engine either. When I did the rebuild
> I never noticed the disparity. So my question is what
> do I do? Can I go to a machine shop and have them plug
> the extra holes or look for a new head or should I not
> be concerned. Has anyone else noticed this as well?
>
> Dave Mahlmeister
> 72 Tr6
>
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