Hi guys, newbie here to the forum, so I recently bought a 1990,s Rover mini 998 which I knew was leaking oil somewhere, it turns out that the sump plug thread has been stripped and bodged back in somehow so I,m planning to fit a helicoil repair kit also oil is leaking from the pot joints so I need to fit new seals there too, I,ve done work on minis before but nothing as major as this so what I would like to know basically are both jobs possible to do without removing the engine?
Major Oil Leaks.
Posted 05 August 2022 - 08:06 AM
Pot joint seals, yes that's easy enough. I'd get the car in the air, pop the bottom ball joints and swing the hub out until the joint clears the cover. Unbolt and replace. (If he has stock, you can buy rebuilt covers from Guessworks).
For the sump plug - not sure, I've not personally had to do it. Looking at my helicoil set, space to drill and tap is going to be the challenge. And if you can get something in there, how 'square' will it be to the sealing face? (if it's on the piss it'll just leak again). Hold for others to comment on that one, there may be a trick...
If you do have to take the engine out, it's really not a big deal as long as you have some off road space. Buy/borrow/rent a crane and then just work through unbolting everything. If wires make you nervous, label them all as you unplug them. With a bit of practise it only takes a couple of hours to pull an engine out.
Posted 05 August 2022 - 09:00 AM
To be honest there are better ways / systema than helicoil.
Posted 05 August 2022 - 09:34 AM
I changed the seals behind the pot joint in place without unscrewing the diff side covers.
For this I completely removed the transmissions and also renewed both Pot joints boots as I was at it and they were split.
I removed the old seals with a tool looking like a fork to ease them out. Pressed gently the new one in with a big enough nut to spread the load.
Posted 05 August 2022 - 10:28 AM
Give the pot joints a good wobble and inspect the bronze bushes they turn in, once the pots are removed. If the bushes are worn replacing the seals alone won't be a long term fix. You can take the covers off with the engine in, but swot up on setting the diff preload. Simplest would be to replace the gaskets like for like, so try & identify the type.
There are several topics on stripped sump plugs if you want to look at your options.
Posted 05 August 2022 - 03:30 PM
Posted 06 August 2022 - 01:01 AM
Thanks for the advice guys, that was my biggest concern being able to get a helicoil fixing dead square on so as ensure it does what its supposed to do, it does look a bit tight for room down there so I might venture to remove the engine which means I,ll have to get the air con system depressurised, a job for specialist air con engineers so I,m told.
Posted 06 August 2022 - 07:29 AM
to be honest, I'd go for a TIME-SERT over a Helicoil, every time, particularly on a sump plug.
Posted 07 August 2022 - 08:00 AM
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