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Another Idea, as you obviously have the skills, Why don't you copy what the Roamerdrive does, Delete the front seal , put some oil galleries through so it drains into the TC , and use an archimedes screw on the input.
Sucks in oil from TC & then drains into TC .
That's where I saw it.
Well tested by now.
Look forward to the rest of the write up. [bigsmile]
whitehillbilly
Yeah, Colin - it came up in another thread a years ago, but I thought I might do a thread which started at the beginning and followed through to how it's been running in the car since 2014.Quote:
Originally Posted by gromit
You're dead right. That would be the best fix (and actually one day I might do something like that or, more likely, just save up and bung in a Roamerdrive) but I was going for the simplest option and seeing how that went...Quote:
Originally Posted by goingbush
Anyhow... Once it was stripped down, the overdrive received a new sump (some of you will have seen these pics elsewhere). The lower portion of the original was cut away, then the new version welded on. A few cooling fins seemed like a good isea, so that was what happened.
A quick note on the stripdown and rebuild of the internals: I was actually surprised to find that all of the bearings, bushes and seals for the rebuild were pretty easy to obtain, and not too expensive at all. Most of the bearings I managed to get by giving a list to a bearing supplier in Brisbane; others I got from the UK (including the big input shaft bearing, which was half the price of buying in Australia or from that mob in the USA).
How much distortion is there from all the welding , is every thing going to be in line & true?:o
Yes, that was always a possibilty - but I seem to have been lucky. The housing mated-up truly to the transfer case when the time came.Quote:
Originally Posted by 1950landy
So how many kays have you done with it since the modification and how is it going?
Have you checked the running temp of it before and after the mod?
Cheers, Mick.
Quote:
Originally Posted by mick88
Righto, it's 1500 miles since the mod. I've taken the overdrive off the vehicle to check it over and do a few bits and bobs. It's been running fine, with no troubles....though a little noisier than I might have liked (no real shock there).
As for the running temp pre-modification, I am not sure. "Extremely Bloody Hot" is how I remember it. Since the mods, it has actually got up to 90 centigrade on a prolonged high-speed (well, things things are all relative..... let's say 50mph) run on a warm day. At those speeds when the ambient temperature is not so warm, the overdrive's temp usually sits somewhere in the seventies.
On normal IIA-running, just trundling about, it is generally a bit cooler than the engine, seldom going over 60 degrees.
Mick - sorry for the slow answer!
Here's the overdrive, taken off the vehicle today. I will begin stripping it down in earnest when I find my circlip pliers.....
John
I just got to the bit where the layshaft has to be removed so the gears drop and the output shaft can be removed. Layshaft wouldn't budge. "Hmmm," I thought..."Maybe it's a bit stiff as I put a ring of gasket blue right at the rear end when assembling it." I started working the shaft backwards, gently (yes gently) with some Stillsons - the only thing with which I could grip the end of the shaft. Back and forth, back and forth, turning it through a few degrees then back again as it slowly moved backwards and (hopefully) out. I have stripped down Fairey overdrives plenty of times: Never has this shaft been so hard to move. Mind you, if memory serves me correctly, it was all very tight when it was assembled.
Managed to pull it back a quarter of an inch or so. Instead of getting easier, it got harder. I wondered if the vacuum effect of which I've heard was operating, when it is very hard to pull the shaft out of its snug fit in the front of the housing.
"Hmmmm...."
Then - crack! Exit my favourite-ever Stillsons.
Time for a pot of tea and a think.