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Hey guys, just after some info on the EA82 FT AWD 5MT gearboxes
Looking everything from gear ratio’s to the sizes and differences from a EA82 PT 4WD 5MT. from what I can see the front looks the same but the rear is totally different…
Just trying to get my head round the workings of them..

Cheers
Brendan

I think the rear looks completely different due to the centre diff housing + the diff lock. These are the same as the EJ housing minuse the diff lock.

AFAIK the gear ratios 1 to 5th are the same, but the low range is different between the PT and AWD boxes.

Some one will know more i'm sure

El_Freddo wrote:AFAIK the gear ratios 1 to 5th are the same, but the low range is different between the PT and AWD boxes.

Some one will know more i'm sure

Close Bennie - but the gear ratios are different. That is one thing I have certainly noticed since I got mine. I have the ratios in an FSM at home - I'll post them up if no one beats me to it. Very true bout the low range difference.

So Fang, are the gear ratios better than a part time box than the full time box you've got now? I'm guessing you didn't swap the low range gears over (would have been simple in that box compared to the EJ box conversion i bet).

Cheers

El_Freddo wrote:So Fang, are the gear ratios better than a part time box than the full time box you've got now? I'm guessing you didn't swap the low range gears over (would have been simple in that box compared to the EJ box conversion i bet).

You guessed wrong - I have 1.592 gears in mine. I did prefer my old gears for bitchumen but now I can put the car into low. Makes it less crap in city driving. The gears in these boxes are made with EA82T's in mind - not really for a normally aspirated engine.

A Full Time box was still not as easy I hoped. Had the low changed over from a donor box - The d**ned CVs were the worse. I ended up buying a full pair of MPFI CVs. The other issue was the adjustment to the gear selector rod. Also had to source the switch and solenoids for Diff Lock engagement. Certainly learnt a lot doing it.

Fang wrote:The other issue was the adjustment to the gear selector rod. Also had to source the switch and solenoids for Diff Lock engagement. Certainly learnt a lot doing it.

I also had to modify my selector rod (the plate didn’t line up with the holes) and also have to shorten the hi/lo selector... Still trying to get a switch and solenoids.

Well I found a US 1988 L Series handbook with the specs

Full Time 4WD
1st - 3.545
2nd - 2.11
3rd - 1.448
4th - 1.088
5th - 0.871
Rev - 3.416
Low - 1.196


From an Australian handbook -:

Standard 5 Speed
1st - 3.545
2nd - 1.947
3rd - 1.366
4th - 0.972
5th - 0.780
Rev - 3.416
Low - 1.592

'[4MUFF wrote:]I also had to modify my selector rod (the plate didn’t line up with the holes) and also have to shorten the hi/lo selector... Still trying to get a switch and solenoids.

I lucked out finding you another switch sorry mate

tis all kewl.. i still got a busted one to work from

are all ftawd boxes 3.7's ??

All the EA82T ones were,

The Lib DR boxes are 3.9

hmm okies.. im not sure atm.. just curious.. i got diff lock on atm so shes only running rwd.. but i wanna test out the ftawd

Some EA82 single range Full Time boxes are 3.9 - dont think you will see too many in this country though. They were from Vortex/XTs.

Hmm why would it be running RWD Brendan? The box should only ever run in 4WD - the diff lock just locks the centre diff in the box.

How hard is it to change the diff ratio (i know both diffs will have to be changed and the gearbox split)?
Does the drive pinion (ring) clip in place and able to be exchanged for a higher diff ratio?

I'm thinking of lifting and running bigger wheels. But i will be going to the effort of changing diff ratios to keep everything standard in terms of speedo readout and performance (i know the extra weight and rolling resistance will change performance a little but i'm not worried about that. And that i will have to run the 3.7 internals with the 3.9 diff to get correct readout.).

This piece of info would be great to know, makes planning a little easier.

Cheers

El_Freddo wrote:How hard is it to change the diff ratio (i know both diffs will have to be changed and the gearbox split)?
Does the drive pinion (ring) clip in place and able to be exchanged for a higher diff ratio?

I'm thinking of lifting and running bigger wheels. But i will be going to the effort of changing diff ratios to keep everything standard in terms of speedo readout and performance (i know the extra weight and rolling resistance will change performance a little but i'm not worried about that. And that i will have to run the 3.7 internals with the 3.9 diff to get correct readout.).

This piece of info would be great to know, makes planning a little easier.

I have heard from most people you can't do it. However, I have also heard of putting the F/T 4WD internals into an EJ box and using the EJ's final ratio. Have not had any personal experience with changing it though. This is the one thing I hate about my gearbox - the 3.7 ratio.

Fang, I think we've talked about changing the EJ internals into the EA gearbox casing in a previous post.

I want to know if it is possible to just change the R&P gears and not all the other bits and pieces.

I'm still hanging out for some money to grab a few gearboxes to try some stuff out (I want that L series AWD box with lockable centre diff, thought i had one arranged but it fell through )

So maybe i could come up with a hybrid but have to A) get the required gearboxes and B) suss out the parts i'm thinking of using to see if they will actually fit together. Problem at the moment is money and time. I hope to get there in the next year or two, i know that sounds like a long time but i will wait longer if need be.

Cheers

El_Freddo wrote:Fang, I think we've talked about changing the EJ internals into the EA gearbox casing in a previous post.

Vice versa - EA Full Time internals into an EJ casing. Are you not asking how to change the diff ratio in a Full Time box? Or are you asking how to change the low ratio?

I'll start another thread now to end this hijack.

I will look out for the other thread however

Fang wrote:Well I found a US 1988 L Series handbook with the specs
Full Time 4WD
1st - 3.545
2nd - 2.11
3rd - 1.448
4th - 1.088
5th - 0.871
Rev - 3.416
Low - 1.196
From an Australian handbook -:
Standard 5 Speed
1st - 3.545
2nd - 1.947
3rd - 1.366
4th - 0.972
5th - 0.780
Rev - 3.416
Low - 1.592

Fang wrote:Some EA82 single range Full Time boxes are 3.9 - dont think you will see too many in this country though. They were from Vortex/XTs.

Mine is a 3.9 so does this mean that these figures are based on the 3.7 therefore making mine a little out?

BlackMale wrote:I will look out for the other thread however




Mine is a 3.9 so does this mean that these figures are based on the 3.7 therefore making mine a little out?

Correct - those figures were from an L Series manual (I'll reply to your email too soon Craig!)