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What are the different LSD ratios?

Posted: Tue Jan 06, 2009 10:54 pm
by rix313
I'm wanting a LSD but not sure which ratio to go for or even what they mean and some one explain and recommend me which to go for, for my super charged M42

Re: What are the different LSD ratios?

Posted: Tue Jan 06, 2009 11:00 pm
by tomson
I'm sure there is an article in the wiki about LSD ratios, have a look there.

Re: What are the different LSD ratios?

Posted: Tue Jan 06, 2009 11:06 pm
by rix313
Tah :)

Doesn't say how the different ratios compare though :(

Re: What are the different LSD ratios?

Posted: Tue Jan 06, 2009 11:07 pm
by tomson

Re: What are the different LSD ratios?

Posted: Tue Jan 06, 2009 11:20 pm
by hoshy
For racing purposes probably stick with the 4.1, rare to find. Maybe even look for a 4.44 but they are very rare (though you could have one built I guess).

Appletree used a 3.91 in his which is quite similar to the 4.1 but a lot easier and cheaper to find.

There's some info on the Wiki page: http://www.e30zone.net/e30zonewiki/inde ... fferential

Either way I'd budget for a freshen up ala Kevo or similar.

Re: What are the different LSD ratios?

Posted: Tue Jan 06, 2009 11:22 pm
by hoshy
I presume you're aware of the basics - higher number == shorted gearing (quicker accel, more gear changes) lower number == longer gearing (slower accel, longer time spent in one gear)

Re: What are the different LSD ratios?

Posted: Wed Jan 07, 2009 12:39 am
by Pete-M
Mine's an auto 325 touring with an LSD.. so which one will that be?

Re: What are the different LSD ratios?

Posted: Wed Jan 07, 2009 1:08 am
by Jon_Bmw
Thats possibly the rarer 3,73 Pete being an Auto. There is only one way to find out for sure though... check the tag and if being anal count the revolutions of the wheels per turn of the prop.

Re: What are the different LSD ratios?

Posted: Wed Jan 07, 2009 6:05 pm
by rix313
According to the Wiki: 3.73 - automatic transmission 325i

Well when the for sale section re-opens I'll be after one

Re: What are the different LSD ratios?

Posted: Wed Jan 07, 2009 6:16 pm
by rix313
hoshy wrote:I presume you're aware of the basics - higher number == shorted gearing (quicker accel, more gear changes) lower number == longer gearing (slower accel, longer time spent in one gear)
I added that to the Wiki mate hope you don't mind.

Re: What are the different LSD ratios?

Posted: Wed Jan 07, 2009 6:24 pm
by Barx325i
if you're desperate for a 4.10 LSD check US ebay

Re: What are the different LSD ratios?

Posted: Wed Jan 07, 2009 6:30 pm
by Cloud
Wrong Wiki page. This is the one you wanted:

http://www.e30zone.net/e30zonewiki/inde ... ferentials

Re: What are the different LSD ratios?

Posted: Wed Jan 07, 2009 7:41 pm
by hoshy
Both pages are relevant in this case.

Probably that log needs a little tidying up and cross-linking.

Did you get the whiskey yet?

Re: What are the different LSD ratios?

Posted: Wed Jan 07, 2009 9:03 pm
by Cloud
hoshy wrote:Both pages are relevant in this case.

Probably that log needs a little tidying up and cross-linking.

Did you get the whiskey yet?
Yes I did, thanks very much. Saving it for an occasion.