Author Topic: LSD pricing question (Read 3582 times)

Nick_318is · « **on:** March 21, 2007, 09:04:50 AM »

Guys, I might have access to a 4.27 small case lsd, and am very interested in getting it, but have a question as to what the right price to pay for it would be? I was thinking maybe $350? Any suggestions and does anyone else have one and if so how much faster is the car and how is it at highway speeds 80-90.

Thanks,

Nick

asubimmer · « **Reply #1 on:** March 21, 2007, 09:34:52 AM »

Korman suggests a 4.45 for the 318is. Not sure how much it would effect your accel or highway. I wouldn't pay over 250 for a small case lsd personally. A med case will be a lot stronger.

stuartgallafant · « **Reply #2 on:** March 21, 2007, 12:41:51 PM »

i agree with charlie, the medium case diffs can take so much more abuse

Nick_318is · « **Reply #3 on:** March 21, 2007, 06:58:26 PM »

Thanks for the info, I have heard that the 4.45 is a little all out and revs would be high for daily driving, so i was thinking the 4.27 would be a nice compromise. Thank god for m42 club, and people with the same car.

I guess i will keep looking (passively) for one thats a med case.

Shocker · « **Reply #4 on:** March 21, 2007, 08:37:43 PM »

Me personally id go with a 3.91 or 3.73 even stock. With a 4.27 or higher you going to get 10ft and have to shift to 2nd then like 40ft farther shift to 3rd� but I guess I�m running 12 PSI of boost too but still.

2002maniac · « **Reply #5 on:** March 22, 2007, 05:08:20 AM »

I say buy it. $350 is reasonable as that's a fairly rare gearset. If you want a medium case that's fine, but it would be overkill and you'll never find a gearset lower than 4.10 for less than $500. The S14 racers eat those things up.

2002maniac · « **Reply #6 on:** March 22, 2007, 05:10:10 AM »

Quote from: stuartgallafant;21913

i agree with charlie, the medium case diffs can take so much more abuse

has anyone broken their small case diff yet? How much power does it take? I know plenty of 2002's running over 200whp with no drivetrain problems.

b318isp · « **Reply #7 on:** March 22, 2007, 07:46:47 AM »

I paid €400 + p&p for mine 4 years ago (4.10). They are getting rare these days, so pay dependant on mileage/condition.

Ratio's such as 3.91-4.45 do not make a huge amount of difference one way or the other. To me, the advantage with going with the shorter diff is that it closes the gear ratios up a bit.

The small case doesn't seem to cause problems if kept well lubed. The big diff is heavier too.

If the LSD is in top condition with <100k miles, then I think $350 is a good price.

Nick_318is · « **Reply #8 on:** March 22, 2007, 11:27:21 AM »

Quote from: b318isp;21988

Ratio's such as 3.91-4.45 do not make a huge amount of difference one way or the other. To me, the advantage with going with the shorter diff is that it closes the gear ratios up a bit.

Thats exactly what im looking for I like it with a 4.1 but if the gears were a little closer it would be great, especially in 2nd and 3rd. I figure if i can get it a little closer and get a lsd to replace my open life would be good. This guy wants $450 so i have asked to see pictures and get all info he has on it (mileage and condition). I still dont think i'm willing to pay more then $350+shipping.

Thanks again for the help guys.

b318isp · « **Reply #9 on:** March 23, 2007, 04:37:07 AM »

It's a great pity that there isn't a close ratio gearbox available like there was for the 325iS. 2nd to 3rd is quite wide, and 4th could come down a bit too.