Gearbox Oil...

[DaveL485]

Everyone involved was under the impression it was a straight fit, we had no idea that the shaft fittings were not identical (assuming they're not i'm waiting for pics), including the guy that made a living building UN1's for the last 20 years.
Quite a turn up for the books.

Lee- PICTURES, CHOP CHOP!! hoto:hoto:

---------- Post added at 06:59 PM ---------- Previous post was at 06:56 PM ----------

there is a company in Holland that make the gears (aftermarket) for the UN1. And if someone is interested, got a brandnew set syncros and gearbearings, also brandnew gearselectors (from renault).

Prices? I'll see if my gearbox man is interested.

 

[la21t]

I'm not moaning, I'm just having a chat lol

G-Whizz has the camera, I'm waiting for her to start the upload mate

 

[MakeEverything]

I had a bag of sand spare and thought sod it, I wanna be the only one with one of them Quaife things :nerd:
A plated diff would be more predictable methinks......

I didnt enter it 'having a go at something not straight forward' - I was told it was plug and play by Chris@Mach1, its only with further investigation that Quaife dont make a diff for the 21, they make one for the gearbox. Big DIFFerence lol

The more I think about the more I think I'll be wanting money back....Im not buying shafts, adaptors and hubs and with a lifetime warranty I wont be angle grinding the splines on the diff to make the 21 shafts sleeve further

---------- Post added at 03:04 PM ---------- Previous post was at 03:02 PM ----------

Thanks for offer on bits, I found a hub in my boiler cupboard (as u do) and have an inner joint too.

If its a straight fit into the gearbox, then why not on the 21?? If it doesnt fit in the 21, it might in the kit car.... :fish2:

You dont need cossie shafts. The standard sierra ones will do. They are plenty thick enough to take your power, and ive never heard of one snapped.

 

[la21t]

If its a straight fit into the gearbox, then why not on the 21?? If it doesnt fit in the 21, it might in the kit car.... :fish2:

You dont need cossie shafts. The standard sierra ones will do. They are plenty thick enough to take your power, and ive never heard of one snapped.

Ok, I'll try and rephrase it. It's a diff built for the UN1 gearbox Lotus and Renault Alpine it's a diff for a 21 Turbo - the Lotus and Alpine use different driveshafts to the 21
What shafts are you using?

The 21 shafts simply don't have enough depth to slide far enough to create a seal within the seal :/ lol

Regardless of what shafts I need, it still involves hub/disc/wheel/shock and everything associated doesn't it?

 

[dansam]

maybe a silly question but couldnt you have a 21t/alpine hybrid shaft made??

 

[MakeEverything]

Ok, I'll try and rephrase it. It's a diff built for the UN1 gearbox Lotus and Renault Alpine it's a diff for a 21 Turbo - the Lotus and Alpine use different driveshafts to the 21
What shafts are you using?

The 21 shafts simply don't have enough depth to slide far enough to create a seal within the seal :/ lol

Regardless of what shafts I need, it still involves hub/disc/wheel/shock and everything associated doesn't it?

I'm using standard sierra shafts with spacers. The spacers are just CV joints in bits, but there is a machined adapter on the gearbox end.

You can get some made up to your spec with whatever ends you need from a place like RecoProp in luton. Their prices are pretty good, and they come out all balanced and properly welded. I think they quoted me ?140 for a single prop shaft with custom ends when i was looking at the 2.9 engine in the dutton.

 

[Red21]

Richard ?

What??
Have I fitted a LSD?

It's in progress along with other gear changes.

All diff stubs are the same part number 7700660016



I was under impression that the UN/389 box was "borrowed" from AMC during the Renault technical tie up from the mid 70's

 

[DaveL485]

Regardless of what shafts I need, it still involves hub/disc/wheel/shock and everything associated doesn't it?

No. If it were me, i'd find something that fitted, chop it off and get me pimp welder mate to fit it to the back of the 21 shaft.

All diff stubs are the same part number 7700660016

Thats what I cant get my head around. Theyre all the same, on every box ive seen, which includes UN1 from a 21T, 25V6T, GTA which sits the other way around, and UN7. Why would the Quaife diff be different? It makes NO sense.

 

[la21t]

What??
Have I fitted a LSD?

It's in progress along with other gear changes.

All diff stubs are the same part number 7700660016



I was under impression that the UN/389 box was "borrowed" from AMC during the Renault technical tie up from the mid 70's

Thank you Richard, very much

 

[la21t]

That's as far as it goes mate

 

[Andyquadra]

Its the group N rally car that John Price fitted a atb to

 

[la21t]

Thanks Andy

 

[DaveL485]

Ive got some images from when we took it apart- cut and blown up.

Old-



New-



Both-



****ing thing is longer! Jesus....I'll get on and see what we can do about it... Options-

1)Shorten splines on the diff
2)Dig more out the base of the shaft
3)Lengthen the shaft reach over the spline by welding the back of another shaft to the current one, and oval the pin hole out slightly to allow the pin through.
4)Take the LSD out and go back to std.

 

[MakeEverything]

These are mine.

 

[la21t]

Cheers buddy

Had several conversations today. One with Kevin of GTO Engineering who seems to think the Alpine and the 21 shared driveshafts, more than one person think/know different. Then I had another conversation with a chap who had an RS200 using a UN1 box, he had to have custom shafts made.....the reason.....the Renault 30 shafts he was advised to use wouldn't seal the oil once he'd fitted a Quaife diff. When I showed him a pair of 21 shafts, he said 'that's them or extremely similar'

The inner joint was what he referred to in particular.

Think today answers just about everything don't u? Lol

 

[-Jo-]

thats what i told you on the phone. The LSD is listed for the R30 UN1 wich was the V6 motor. The shafts from the alpine are deff. diff to the 21 shafts. Thats what ive being told today.

 

[danb]

Get some alpine shafts and use thr inner cv on a 21 shaft?

 

[la21t]

Dan I've sent texts and emails to Simon Gamben and that Clee fella on Sunday asking for inner cv's lol and neither have replied lol

I've also set about searching for some Lotus Esprit items, the rear wheel bearing on an Esprit is the same as the front on a 21 btw (don't help me but bit of Trivia)

Jo, thanks mate I sent u a Facebook message

 

[Red21]

The R30 used the same stub as the UN on some gearboxes (32mm diameter underlined), with the other been a 30mm dia stub.
View attachment 1603

Dave, From the pictures I can see that there is more stub material from the pin hole to the end,
I if some one can measure the diameter of the Quiafe stub and it's 30mm at the bearing surface that may be the problem as for the R30 they only list one size inner coupling as the spline section is a smaller than the bearing face.

Next week I will try and dig out the 369 g/box manual and see what that says.

 

[la21t]

Diameters aren't an issue mate, it's length that's the problem. The female of the shaft just isn't deep enough to accept all of the diff stub, meaning it doesn't create an oil seal.