Todays Discussion in Class: Rear Differentials
20 February 2003, 11:27 AM
#1
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Location: Leeds - It was 562.4bhp@28psi on Optimax, How much closer to 600 with race fuel and a bigger turbo?
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Right,
Lets get one thing straight I'm tight, so Modena (sp) Quaife ATB etc are out..
I need to make a rear diff with a 3.9:1 ratio for my 6spd box..
The sport has the correct ratio, however no lsd.. (drugs argh)
so obviously the plan is to stip a sport diff and rebuild it into a turbo diff thus keeping the rear lsd but changing the ratio..
Is there any difference between a UK turbo LSD and a WRX / STI LSD??
If so what and which is better discuss in no more than a 1000 words, due in by Monday Morning..
Dismissed..
David
Lets get one thing straight I'm tight, so Modena (sp) Quaife ATB etc are out..
I need to make a rear diff with a 3.9:1 ratio for my 6spd box..
The sport has the correct ratio, however no lsd.. (drugs argh)
so obviously the plan is to stip a sport diff and rebuild it into a turbo diff thus keeping the rear lsd but changing the ratio..
Is there any difference between a UK turbo LSD and a WRX / STI LSD??
If so what and which is better discuss in no more than a 1000 words, due in by Monday Morning..
Dismissed..
David
20 February 2003, 12:13 PM
#2
There is such a thing as an Sti Plated rear diff.
Stevieturbo found one when working on the P1 setup that went on to Micheals Legacy.
This may well be better for high power setup.
Should be able to find one s/h.
paul
Stevieturbo found one when working on the P1 setup that went on to Micheals Legacy.
This may well be better for high power setup.
Should be able to find one s/h.
paul
20 February 2003, 02:09 PM
#7
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want to sell it?
(assuming it is the same a impreza one (excluding the ratio)
David
(assuming it is the same a impreza one (excluding the ratio)
David
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20 February 2003, 02:44 PM
#8
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I think there are diff ratios for current scoobs on the spec sections of the website.
Edit: Why not just get an STi 7/8 diff? they're 3.9:1 Or what about using a front diff and putting it in the rear diff box?
[Edited by Toerag - 2/20/2003 3:05:53 PM]
Edit: Why not just get an STi 7/8 diff? they're 3.9:1 Or what about using a front diff and putting it in the rear diff box?
[Edited by Toerag - 2/20/2003 3:05:53 PM]
20 February 2003, 03:04 PM
#9
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I know they are fairly scarce but if you can find a MY95 WRX RA breaking then they have a 3.9 lsd in the rear.
I was 'half' thinking about going for Colin's Prodrive RA box which has a 4.1 in it. I would need to change my rear diff to 4.1 in that case.
Make me an offer ? Or find me a 4.1 rear LSD and it might sway the decision
Andy
I was 'half' thinking about going for Colin's Prodrive RA box which has a 4.1 in it. I would need to change my rear diff to 4.1 in that case.
Make me an offer ? Or find me a 4.1 rear LSD and it might sway the decision
Andy
20 February 2003, 03:18 PM
#10
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toerag... different width driveshafts etc...
Andy.. its probably shagged.
David
Andy.. its probably shagged.
David
20 February 2003, 03:51 PM
#12
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lol.. I heard the noise your diffs were making at well lane... didnt sound healthy... 
David
David
20 February 2003, 05:13 PM
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Legacy diffs are slightly different. The driveshafts at the rear of most legacy's I have seen fit in the same way the front driveshafts do... ie with a roll pin, onto a stub.
Saying that, Michaels 1990 Legacy RS ( Jap spec ) had an impreza type diff when he bought the car, although we did also find out aferwards that it didnt have the original gearbox in the car, so may have had a diff change at some point too.
Other than that, the actual casing is the same, so fitment is the same....Just use the diff back plate to suit the car, as one has longer studs.
As for the P1 plated diff...not just one, I know of at least 2, along with several STI diffs, which is what a P1 is anyway.
The STI7 will have a 3.9 rear diff, but it also has the R-180 diff, so basicallly you would the entire rear end ( diff/hubs/shafts etc to do that install.
While on topic.....He still has the P1 box and diff for sale. Very low miles, and in perfect condition. To be sold together, not seperately.
[Edited by ustolemyname??stevieturbo - 2/20/2003 5:16:29 PM]
Saying that, Michaels 1990 Legacy RS ( Jap spec ) had an impreza type diff when he bought the car, although we did also find out aferwards that it didnt have the original gearbox in the car, so may have had a diff change at some point too.
Other than that, the actual casing is the same, so fitment is the same....Just use the diff back plate to suit the car, as one has longer studs.
As for the P1 plated diff...not just one, I know of at least 2, along with several STI diffs, which is what a P1 is anyway.
The STI7 will have a 3.9 rear diff, but it also has the R-180 diff, so basicallly you would the entire rear end ( diff/hubs/shafts etc to do that install.
While on topic.....He still has the P1 box and diff for sale. Very low miles, and in perfect condition. To be sold together, not seperately.
[Edited by ustolemyname??stevieturbo - 2/20/2003 5:16:29 PM]
21 February 2003, 10:14 AM
#16
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I cant see rollpins on my rear driveshafts so how do they fit??
21 February 2003, 05:59 PM
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I have never tried removing the stubs form the rear of a legacy diff, so not sure.
Either way, there are a few variations, but most are interchangeable.
Either way, there are a few variations, but most are interchangeable.
21 February 2003, 07:11 PM
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There are only a select few that have the larger rear diff.
The P1 has the normal size, as do most Type R's as far as I know.
A few STI-RA's have the large rear diff, and the 22B, other than that, Im not sure.
The P1 has the normal size, as do most Type R's as far as I know.
A few STI-RA's have the large rear diff, and the 22B, other than that, Im not sure.
22 February 2003, 07:16 PM
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Sorry I am late to the class sir!
I just downloaded the manual for the transmission and it includes the diff... if you want a copy? Pre97 etc.. it is on Chris Palmers website linked etc..
JGM
I just downloaded the manual for the transmission and it includes the diff... if you want a copy? Pre97 etc.. it is on Chris Palmers website linked etc..
JGM
22 February 2003, 08:41 PM
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The nissan internals may be the same, but i doubt the casing will be???? I may be wrong though. But if you do get one, you will need driveshafts and hubs. as they are also larger