4 replies to this topic

[ChrisL]

I reconditioned the differential when building my new engine. On stripdown there was no gasket there so I have read that I shouldn't use a gasket when re-building. I sealed this cover with blue Hylomar and fitted the engine.
I now have a good sized oil leak coming from the joint so am taking the engine out to repair, what sealant should I use?

[pantera2075]

Blue Hylomar should be ok, but there's always the red stuff available ..... Hematite????.

Then there's just your usual clear silicone which seems to work well too.

Sounds like you've got a bit of misalignment or contamination on the mating faces, which is par for the course in that area.

[Sammy D]

I actually had gaskets in my gasket set for this. Quite rare apparently!

[sixwheeler]

You can get special flange sealants in a variety of different formulations, some of them cost hundreds of pounds.

What you use on a mini I have no idea but someting like this should be fine: loctite 598

or

Loctite 5699

[Guess-Works.com]

do not use holycr*p blue

you should use an RTV silicon sealant which is specifically designed for gearboxes.

I've used the loctite above but it's chuffin expensive when doing a lot of boxes, but for one an ideal solution

I'm currently using Wynn's eg. http://www.tooled-up....asp?PID=140992, one of these tins has lasted me the best part of a year.

but will soon be swapping to a bulk pack version which will again work out cheaper in the long run.

Remember you only need a very thin bead of the stuff as excess is not only squished out on the outside but also on the inside.. which means it ends up clogging up your oil pickup pipe, and don't use it with ANY gaskets anywhere... and you're right, if there were no gaskets then you should not use gaskets.

Edited by GuessWorks.co.uk, 10 June 2008 - 06:25 PM.