[Fot] Best Head Gasket

[John Styduhar]

If the head gasket has a round bore it will leak on a heavily machined
cylinder head because the combustion chamber around the intake valve will
increase in radius and create the ""Mickey Mouse ear" that eliminates the
contact area with the sealing ring on a round head gasket opening.  Mordy
makes my solid .030" copper annealed head gaskets for a .125" milled steel
head and use copper wire fire rings above and below the gasket for added
sealing. Coppercoat sprayed on several coats and 2 to 3 thousands liner
protrusion.   ARP hardware.


On Fri, Jul 31, 2020 at 6:59 PM Mordy Dunst via Fot <fot at autox.team.net>
wrote:

> Copper hg’s not for everyone.  Deck, head have to be flat, true.  Anything
> more than .004” off  front to rear and you will have fitment issues.
> Knowing how to use dressing us key.   Can take two identical engines one
> built by a periodic builder  and one pro.   Same parts .  One will be built
> better and likely have a durable engine.
>
> MDunst Headgasket.com 626.358.1616
> Fax 626.628.3777
> Triple R Munitions, Inc 626.201.9471
> T FFL 6,7 SOT 2
>
> On Friday, July 31, 2020, Jack Wheeler via Fot <fot at autox.team.net> wrote:
>
>
> I've read all of the comments, but haven't heard anything about Cometic.
> I had rebuilt my TR-3 engine a number of years ago, using the stock head
> gasket.  I built the engine as I would have built one of my race engines in
> the day, except with a milder cam and less compression (10.5:1).  From day
> 1 it never really ran right.  I began to suspect coolant was getting into
> the combustion chamber, so I bought one of those test kits where you pull
> some coolant out while the engine is running and add a chemical which tests
> for hydrocarbons.  Sure enough, hydrocarbons were getting into my coolant
> system.  That says bad head gasket or crack in the head.  Since I'd had the
> head magnafluxed during the rebuild, I assumed it was the head gasket.
>
> I began asking around about where I could get a good gasket.  A guy at a
> local engine shop (primarily Ford engines) recommended Cometic.  I had
> never heard of them, and told him the engine was over 50 years old, so
> surely they would not make a gasket for it.  He encouraged me to check the
> internet, and sure enough, they make a whole bunch of them for the TR
> engine.  It's been a few years ago, but as I recall, they had gaskets for
> different bores (i.e. 83MM, 86MM, 87MM, etc.) and you could order different
> thicknesses.  They stacked steel gaskets on top of each other to get to the
> thickness desired.  I think I ordered a 3 layer gasket.  It all sounded a
> little fishy, but based on the strong recommendation I had received, I
> ordered one.
>
> I removed the bad head gasket and replaced it with the Cometic gasket, and
> suddenly the engine ran great.  I have put almost 7.000 miles on the car
> since then and haven't had a problem.  It runs cool (even on 95 degree
> days, as tested recently), pulls strong, and no sign of any coolant leaks.
> By the way, I noticed someone else recommended Hylomar gasket cement.  I
> also used that.  A light coat on all sealing surfaces does the trick.  Do
> not spray a thick coat.  Below is the link to the Cometic web site.  Check
> it out.
>
> Cometic Gasket - Sealed Under Extreme Pressure <https://www.cometic.com/>
>
> Cometic Gasket - Sealed Under Extreme Pressure
>
> Cometic Gasket supplies hi-performance gaskets for a variety of
> motorsports markets: ATV, Drag Race, Domestic Au...
> <https://www.cometic.com/>
> Jack
>
>
>
>
>
> On Friday, July 31, 2020, 5:27:49 PM EDT, mleccese1--- via Fot <
> fot at autox.team.net> wrote:
>
>
> Phil, Dave,
>
> I may have compromised my head gasket last weekend at Lime Rock (Green TR4
> #802), can you or someone recommend one that is robust.
>
> Thank you
> Michael L
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