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New rear hub gasket

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rfitts

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Getting ready to replace a rear differential hub gasket 61 BT7. It is a paper gasket should I use a gasket sealer? Preferably nonhardening... Bob
 
rfitts said:
Getting ready to replace a rear differential hub gasket 61 BT7. It is a paper gasket should I use a gasket sealer? :yesnod: Preferably nonhardening... :yesnod: Bob
Click to expand...
 
Bob

You would probably be OK using the paper gasket if you already have purchased one, because there is a vent hole on your diff/axle casing, so there is very little pressure buildup, which can lead to gasket leaks.

On the other hand, having used Payen gaskets in the past which are supposedly a good quality product (maybe so, but they leak too), and given Healeys' justifiably notorious reputation for marking their territory, I would tend to use a non-hardening gasket sealer. You might try The Right Stuff. I think it's made by Permatex. BMW also used something called Dri-Bond, which is quite good according to a mechanic friend of mine. Subaru also has a similar product but I can't recall the name...

Dave
 
I use ThreeBond 1211 exclusively for any gasket seal in an oil environment. It is around 18 dollars for 3.5 oz. and worth every penny. The color is light grey, it is quite liquid and easy to distribute evenly, and does not dry hard. I discovered 1211 when restoring several british motorcycles, where I used it to seal the engine cases together and never had a leak.
 
I like Hylomar 'cause it is a pretty blue color.
 
I've used Permatex Aviation Form-A-Gasket to good effect. The stuff does get stiff, but it glazes and is easy to scrape off. I like Right Stuff for differential covers but think it might be too thick for a hub gasket. Hylomar ought to work fine. Whatever you use should be thin because I believe there's a spacer that has to stand proud just the right amount.

Don't forget the O-ring (do all Healey hubs have them?).
 
rfitts said:
Getting ready to replace a rear differential hub gasket 61 BT7. It is a paper gasket should I use a gasket sealer? Preferably nonhardening... Bob
Click to expand...

I don't like to use gasket sealers down here for one simple reason - if the hub nuts start to come loose, the oil leakage is a very simple and easy sign that the hub needs to be examined and tightened. If you seal this, you won't know they are loose until you've destroyed your hub studs.

When the 5 bolt hub has a new paper gasket (get the precut ones - they are the correct thickness - too thick and they don't seal as well) and a new o ring, these things rarely, if ever leak. Just set it up like it was from the factory - it will not leak.

Alan
 
Use Sellador (low cost Hylomar substitute) or Hylomar (High priced since discontinued by Permatex). Both are non-hardening.

To prevent anything from coming loose use red locktight and fresh lockwashers.

This is also the time to replace the pinion seal as well as the hub seals, O rings and gakets there.
 
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