[Healeys] 100-4 "M" head gasket leak

rrengineer @dslextreme.com rrengineer at dslextreme.com
Sun May 23 01:12:20 MDT 2010


Try Cometic gasket.  They list a solid copper one for the 100.  You can also
order it an any thickness you need if you want change the CR.  The solid
copper gasket requires flat mating surfaces of 50RA or smoother.  The
instructions also require you to coat both sides with a gasket sealer such
as Gasgacinch or something comparable, but just normal torque specifications
are called for.

http://www.cometic.com/default.aspx

No financial interest, just a satisfied customer.
Mike MacLean
56 BN2
60 An5

On Sat, May 22, 2010 at 3:31 PM, S and T Miller <stmiller96 at hotmail.com>wrote:

> I rebuilt a guys 100-4 engine a few years ago, where we converted it to "M"
> specs and .030 over. He over heated it at least once (I didn't do anything
> to
> his rad.).  He now has a head gasket coolant leak (3,000 plus miles) on the
> right side of the motor.  Is there any recommendations for a replacement
> head
> gasket or head gasket sealant?  I have always been one to not use any
> sealant
> on head gaskets.
>
> Thanks, Shawn
>
> The Millers
> "British Car Nuts"
>
> 1957 Austin Healey 100-6 BN4 35299
>
> 1959 Austin Healey 100-6 BN4 77219
>
> 1964 MGB 40841
>
> 1960 Austin Healey Bugeye Sprite AN5 34351
>
> "Always drive them, but remember each drive in an antique car is a test
> drive."


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