Gasket sealing is a dynamic deal. The axial camping force minus the combustion
chamber pressure is obviously key. No sealing agent will overcome less than
adequate head studs. If the liners are too proud or off between each other
seepage of oil and coolant will occur with head lift during load. Stock
compression and thick stock head gaskets are very forgiving. Race motors are
not. MLS head gaskets were designed with intent of sliding along each portion
as expansion of the head and block occur @ different rates (alum head/ iron
block). Some gaskets need retorquing during warm up.
Sealants come in various flavors. The holy grail is yet to be found. But there
good products out there. I have tested many. I'm not going to detail results
here. Solid Copper hg's are not for everyone. Some people have nothing but
problems, some love them. I use them --- go figure. Work for me. Perhaps I am
exacting when it comeS to liner protrusion.
For the tr tractor engine symetrical liner height is crucial. Using a steel
metal hg keep the protrusion no less than .003" more than .005" will likely be
an immediate problem.
Sent via BlackBerry from T-Mobile
-----Original Message-----
From: n197tr4@cs.com
Sender: fot-bounces@autox.team.net
Date: Wed, 27 Apr 2011 19:17:25
To: <fot@autox.team.net>
Subject: [Fot] headgasket approaches tr3 tr4 a brief summary. fyi
1. OEM style gasket
2. OEM style gasket with copper wire in liner groove
3. Steel shim gasket with copper wire
4. Steel shim gasket w/out any wire.
5. Copper gasket with steel wire in head groove.
6. Cometic gasket
Gasket dressing varies
We have done most all with reasonable success....except Cometic.
Surprised at limited number of responses..... and the variety of solutions.
Perhaps gasket sealing is a non issue or everyone is busy changing head
gaskets.
It appears that OEM style is understandably the most forgiving, but concern
remains that it might not work well with the typically modified head.
Joe A
I suppose we should assume that all surfaces and assemblies are in spec.
I'd like to see a Cometic and try it...we have one on order but will not
receive it in time for this engine assembly.
Anyother comments.....??
=
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