What type of sealant between gearbox and engine?
Created by: dogscarf
Total posts: 606
Last post: Feb 2, 2024 Member since:Mar 11, 2010
|
Cars in Garage: 0
Photos: 6 WorkBench Posts: 1 |
|
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.
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.
Total posts: 367
Last post: Jul 19, 2022 Member since:Jun 18, 2014
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
I bought some Toyota sealer. Used it on several mating surfaces. Cannot wait to fire up the engine.
Dogscarf
Dogscarf
Total posts:
Last post: Nov 14, 2021 Member since:Apr 7, 2000
|
Cars in Garage: 0
Photos: 1 WorkBench Posts: 0 |
|
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
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
Total posts: 1007
Last post: Jul 19, 2022 Member since:Jul 24, 2014
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
Quote:
Originally Posted by JEFF10049
what about the transfer gear clearance guessing not enough difference to matter?
Total posts: 4161
Last post: Jun 3, 2023 Member since:Aug 15, 2001
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
|
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.
Total posts: 673
Last post: Apr 12, 2020 Member since:Nov 12, 2006
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
|
what about the transfer gear clearance guessing not enough difference to matter?
Total posts: 35
Last post: May 13, 2023 Member since:Jun 10, 2017
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
Total posts: 654
Last post: Dec 20, 2017 Member since:Sep 24, 2011
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
|
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
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
Total posts: 367
Last post: Jul 19, 2022 Member since:Jun 18, 2014
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
OK, so YES paper gasket between the gearbox and engine with Loctite or Toyota silicone or similar derivative or NO paper gasket?
Dogscarf
Dogscarf
Total posts: 8645
Last post: Dec 16, 2020 Member since:Oct 27, 2000
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
|
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.
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+.
Total posts: 367
Last post: Jul 19, 2022 Member since:Jun 18, 2014
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
Yes, 1/4" hex sockets.
Dogscarf
Dogscarf
Total posts: 834
Last post: Mar 7, 2023 Member since:Aug 15, 2002
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
|
By hex head bolts, did you mean socket head bolts, the type that needs an allen wrench?
Total posts: 6908
Last post: Dec 4, 2023 Member since:Feb 26, 1999
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
|
leave out the paper gasket
Total posts: 367
Last post: Jul 19, 2022 Member since:Jun 18, 2014
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
Thanks John. I may pick some up at the local Toyota dealer.
Dogscarf
Dogscarf
Total posts:
Last post: Nov 14, 2021 Member since:Apr 7, 2000
|
Cars in Garage: 0
Photos: 1 WorkBench Posts: 0 |
|
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
this is the best stuff, i have used it for 25 plus years
you can use it on the whole engine, great stuff
Total posts: 1944
Last post: Jan 21, 2021 Member since:Jan 1, 2005
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
|
One well-known engine builder here uses Loctite 518 and no gasket. Race motors, street motors both. Mine among the latter.
Total posts: 367
Last post: Jul 19, 2022 Member since:Jun 18, 2014
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
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
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