lsd

All the info you need to race E30's

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salami
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Post Mon Nov 19, 2007 10:30 am

I have a 3.91 standard diff on my 325 and wanted a lsd in the same ratio but no one has one what is the next size im not too bothered on topend but do want excelleration?????
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Scruffymurphy
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Post Mon Nov 19, 2007 11:44 am

The 3.91 LSD is pretty common. You should be able to get one. I would hold out a while longer.
The next option would be a 3.73 but they are rare. A 4.10 would not suit 325.
salami
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Post Mon Nov 19, 2007 11:58 am

ok
thanks no rush for it so i can wait a while
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oldroydsr4
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Post Mon Nov 19, 2007 7:31 pm

Check out link below

The slipper you are looking for.

http://www.e30zone.net/modules.php?name ... sc&start=0
salami
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Post Mon Nov 19, 2007 7:44 pm

Thanks oldroydsr4 i had seen this too,a bit far for me i think :(
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Beemer Redeemer
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Post Tue Nov 20, 2007 1:45 am

salami wrote:I have a 3.91 standard diff on my 325 and wanted a lsd in the same ratio but no one has one what is the next size im not too bothered on topend but do want excelleration?????
We have one in stock. Still in the car and can be tested by the customer if needed.
#280 + vat
(P&P #19.95 if needed)

James
01179 860 635
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tomstickland
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Post Tue Nov 20, 2007 10:44 am

I'm looking for an LSD for my 318iS. Can somone point me to any articles concerning the various ratios?
Ideally I want the small case unit that was fitted to the 318iS, and I'm considering sourcing one from the USA.

From a bit of searching, looks like the iS had 3.91 or 4.1.
What was in the 325 sport and the M3?
Scruffymurphy
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Post Tue Nov 20, 2007 10:53 am

tomstickland wrote:I'm looking for an LSD for my 318iS. Can somone point me to any articles concerning the various ratios?
Ideally I want the small case unit that was fitted to the 318iS, and I'm considering sourcing one from the USA.

From a bit of searching, looks like the iS had 3.91 or 4.1.
What was in the 325 sport and the M3?
The 4.10 is best suited to the IS.
The Sport had either a 3.64 or 3.73
I'm not sure about the M3 3.25 maybe
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tomstickland
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Post Tue Nov 20, 2007 11:01 am

Thanks.
I just found this article, which is quite useful http://www.esatclear.ie/~bpurcell/318ismods.html
For the 318is, I would stick to 4.10 for a stock setup, although the 3.91 will not effect it too much - but the 3.91 ratio is ideal if the engine has been modified. Usual sources are the US E30 M3 (4.10), the European 325i Sport (3.91) or any 318i/is fitted with a LSD.
Lloydie38
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Post Tue Nov 20, 2007 1:20 pm

I bought a 3:64 from Jonb for £250. Had it over a year on the track girl and sweet as, made a real difference to the sideways moments :twisted:
The Isle of Man: No National Speed Limit, No Gatso's, No Nanny State, a disused airfield track 1.5 miles long, the best mountain road to drive on...Come and Play!
BadDave
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Post Tue Nov 20, 2007 8:29 pm

Beemer Redeemer wrote: We have one in stock. Still in the car and can be tested by the customer if needed.
#280 + vat
(P&P #19.95 if needed)

James
01179 860 635
If you buy it on monday,It'll be delivered by Thursday
BadDave
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Post Tue Nov 20, 2007 8:41 pm

I've just recently bought one fron Redeemer Beemer (listed on Ebay)
Had been sandblasted/painted/new seals/gaskets etc
Even came with 2 litres of diff oil

Can recommend him for fast service

Dave
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sam325is
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Post Tue Nov 20, 2007 9:03 pm

i've got one 3:91 £250 from a 1990 tech 2 sport can be seen fitted and working on the car if requested
agreen
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Post Tue Nov 20, 2007 9:07 pm

but the 3.91 ratio is ideal if the engine has been modified
so will these be a straight fi on a 318is?
salami
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Post Wed Nov 21, 2007 1:11 pm

sam325is wrote:i've got one 3:91 £250 from a 1990 tech 2 sport can be seen fitted and working on the car if requested
Thanks for the offer but im going to put off the lsd for a few months and get a roll cage instead winkeye
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oldroydsr4
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Post Wed Nov 21, 2007 6:12 pm

^^^^^

Personally the LSD was the single most enjoyable modification i have made to an e30.
salami
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Post Wed Nov 21, 2007 6:19 pm

a lsd was the first thing on my list but it wont do me any good when im upside down wishing i had the cage :banghead:
just have to wait a few months

have you used yours on track?did it make much difference?
87 325i