Difficulty with Fairey Overdrive

Good news on the overdrive, after much stuffing around, replacing bearings etc. I've managed to get one of my overdrives going fairly well now. Don't such wierd noises when backing off, and when not engaged things are reasonably "quiet".

When engaged I get a bit of a whine, which I understand is a symptom of the Fairey anyway.

I've read a bit that people have put in oil stabilizers to address some of the O/D problems, in particular Morey's oil stabilizer.

What opinion do people have out there on Morey's or other oil stabilziers? Do they make any difference?

Is it a good idea to put it in all three gearboxes (main, transfer and O/D) ? Also in the diff?

Since my engine main bearing seal likes to leak, I don't think I'd bother with it in there as I can't see it making a difference and it would just leak/thin out anyway :(

(PS. Thanks for all the guidance you've all been giving on my O/D)

I run Moreys in my overdrive, but I don't think it really makes a significant difference. Note that one thing I have done is to extend the breather up about three centimetres to stop it chucking oil out - I enlarged and tapped the hole and fitted several brass fittings topped by an axle breather fitting off a Series. Seems to have stopped it, although I have just replaced the gasket on the top plate, which was leaking.

John

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Originally Posted by JDNSW

I run Moreys in my overdrive, but I don't think it really makes a significant difference. Note that one thing I have done is to extend the breather up about three centimetres to stop it chucking oil out - I enlarged and tapped the hole and fitted several brass fittings topped by an axle breather fitting off a Series. Seems to have stopped it, although I have just replaced the gasket on the top plate, which was leaking.

John

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Thanks John. I might look at doing the same, see if I can find something the shed I can use for a breather. I might not be able to go so high as I have a tool box tray in the middle seat which comes down about 4 inches. It's got plenty of clearance to the gearbox as it is but will have to see if how high I can go.

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Originally Posted by LandyDude

Thanks John. I might look at doing the same, see if I can find something the shed I can use for a breather. I might not be able to go so high as I have a tool box tray in the middle seat which comes down about 4 inches. It's got plenty of clearance to the gearbox as it is but will have to see if how high I can go.

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So have I! I did not give full details - there is a right angle bend screwed into the plate, then two nipples to carry it left to past the tool tray, then another right angle, then another two nipples, then the breather. Depleted my tin of brass pipe fittings, but it seems to work. I suspect it does not need to be very high, even a centimetre or so would probably help.

John

Hi All,
I am about to fit a Fairey O/D i picked up on Ebay to my 1958 Series 1 109 inch ute. I see mentioned that oil get chucked out of the breather which is just a split pin by the looks. Do they also leak oil into the T/fer case . I read above to always carrry the original parts and will do this just in case. Any other info or tips greatly appreciated.
Mike:)

Hey Elvin,

If you do end up doing any more work on the overdrive itself, I managed to source all the parts when I reconditioned mine (mind you, I still haven't used it yet...) - and I got a lot of them substantially cheaper than mobs like Rovers Down South charge (some expensive items were literally one third of the "usual" price people quote).

I can't add much more than those who have already replied - except that I know a good type of soundproofing as well...

Send me a PM if you need any of the info.

Cheers,

John

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Originally Posted by Defender Mike

Hi All,
I am about to fit a Fairey O/D i picked up on Ebay to my 1958 Series 1 109 inch ute. I see mentioned that oil get chucked out of the breather which is just a split pin by the looks. Do they also leak oil into the T/fer case . I read above to always carrry the original parts and will do this just in case. Any other info or tips greatly appreciated.
Mike:)

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Yep, they sure do. Mine used to spit oil into the transfer, which caused the transfer to overflow out past the rear output seal. Hopefully with a new seal it'll be better (and a number of years ago I put in a larger breather with a raised breathing pipe, as already mentioned in other posts, which helps to keep the external spill and over-pressurisation down).

Cheers,

John