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 Posted: Nov 29, 2017 04:17PM
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US
In all my repairs, plus commercial fuel installations, I've found that a bottle of Gasket Shellac is the best thing to put on gaskets and surfaces. Silicon usually squeezes out into the oil or expands as it reacts unless is is a very fine amount.

When I rebuilt my Renault engine 5 years ago I was still in the silicon group, and put a fine coating on the gaskets. Last week, when I was finally able to start the engine, I had leaks. So I pulled the engine and made new gaskets with Gasket Shellac to seal the leaks.

 Posted: Nov 28, 2017 07:06PM
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I bought some Toyota sealer.  Used it on several mating surfaces.  Cannot wait to fire up the engine.

Dogscarf

 Posted: Nov 28, 2017 04:17AM
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Rick Anderson-
when the Toyota sealant dries, you can wipe it off, it is not like permatex where that crap is stuck and won't come off

 Posted: Nov 27, 2017 10:41AM
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Quote:
Originally Posted by JEFF10049
what about the transfer gear clearance guessing not enough difference to matter?
I asked this question of Jamal, when I pulled the trans off to verify the condition of my engine and trans, but made no changes. He warned there are very thin gaskets, and somewhat thicker paper gaskets in kits sold by our host. He recommended the thicker as you would not damage the gears if a little loose, worst case just some gear noise. The thin could cause gear failure. I used gasket adhesive on one side, and the thicker gasket. No leaks or gear noise, but just one engine.

 Posted: Nov 27, 2017 07:55AM
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Interesting replies.  I've only done seven or eight Minis but I have always used the same method that I used on my Lambretta and Vespa crankcase rebuilds over the years, and I have done several hundred of them.  I soften the paper gasket by rubbing red grease on them between my fingers.  I then put a very light coat of red grease on both surfaces and then put the gasket on, not forgetting the rubber O-ring on the Mini gearbox.  As I tighten the bolts I can see an even bead of grease squish out and that tells me the surface is mated well.  I have never had a problem with leaks but, as I said, I have not done very many Mini engines.  Maybe I will try the Toyota silicone next time.  I just hate getting that sh!t everywhere.  

 


  

 Posted: Nov 25, 2017 09:16PM
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what about the transfer gear clearance guessing not enough difference to matter?

 Posted: Nov 23, 2017 08:02PM
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 Posted: Nov 16, 2017 03:32PM
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Q:  "OK,  so YES paper gasket between the gearbox and engine with Loctite or Toyota silicone or similar derivative or NO paper gasket?"

A:  Either.  When there is no shim or bearing clearance to worry about then it doesn't matter whether you use a gasket or not

all that matters is you fill the voids wherever there is variation in the mating surfaces

what the guys are saying is that they've had good luck both ways:  gasket + quality sealer or quality sealer alone


N

 Posted: Nov 16, 2017 03:08PM
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OK,  so YES paper gasket between the gearbox and engine with Loctite or Toyota silicone or similar derivative or NO paper gasket?

Dogscarf

 Posted: Nov 16, 2017 01:07PM
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I've used Loctite 515 with the stock gaskets and original 1/4" UNF bolts for years, and never had one leak.
I also use it on the diff housing to gearbox case, generally with NO gaskets there now, because current ones are too thick and the bearings could spin.

Kevin G

1360 power- Morris 1300 auto block, S crank & rods, Russell Engineering RE282 sprint cam, over 125HP at crank, 86.6HP at the wheels @7000+.

 Posted: Nov 13, 2017 03:12PM
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Yes, 1/4" hex sockets.

Dogscarf

 Posted: Nov 13, 2017 11:00AM
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By hex head bolts, did you mean socket head bolts, the type that needs an allen wrench?

 Posted: Nov 12, 2017 09:51PM
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US
leave out the paper gasket

 Posted: Nov 12, 2017 02:09PM
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Thanks John.  I may pick some up at the local Toyota dealer.

Dogscarf

 Posted: Nov 12, 2017 11:10AM
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highly recommend Toyota FIPG part # 00295-00103
this is the best stuff, i have used it for 25 plus years

you can use it on the whole engine, great stuff

 Posted: Nov 12, 2017 09:28AM
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One well-known engine builder here uses Loctite 518 and no gasket. Race motors, street motors both. Mine among the latter.

 Posted: Nov 12, 2017 08:42AM
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Fellow Minioids,  I am about to put my rebuilt gearbox onto my 1275 engine for my 1967 Morris Cooper S (Aussie).  I have tapped out the bolts from 1/4 fine to 5/16 fine.  I have hex-head bolts ready.

Question: in the past I have used Hylomar and black RTV silicon on both sides of the this paper gasket.  I have had mixed results with both.  Is there a new or better product on the market and I would like some feedback as to what others are using.

Thanks!

Dogscarf

1965 Austin Mini Cooper
1967 Morris Cooper S
1968 Morris Cooper S mk2