Boowhup 26 Report post Posted July 21, 2014 (edited) E28 Large case diff. Has been rebuilt recently at a cost of $1500 (Have receipt) with 2 new clutch packs. $1000. Edited December 16, 2014 by Boowhup 1 Quote Share this post Link to post Share on other sites
sonic_attack 89 Report post Posted July 21, 2014 Just to be clear, there's X4 clutches packed in there? Quote Share this post Link to post Share on other sites
jeffbebe 1559 Report post Posted July 21, 2014 Could be interested if it's a straight bolt on or the E31. Will do some research. Quote Share this post Link to post Share on other sites
_ethrty-Andy_ 2122 Report post Posted July 21, 2014 Could be interested if it's a straight bolt on or the E31. Will do some research. 3.91 is a very high ratio for V12. you will be reving the tits out. I have a LSD in my 750iL you are most welcome to, havent got it out to check the ratio yet, but will be lower than 3.91 Quote Share this post Link to post Share on other sites
BM WORLD 1265 Report post Posted July 21, 2014 e28 case wont fit your e31 case . you need e34 or e32 large diff case . but you could swap the internals into your diff case or another e34/e32 type 3.91 will speed things up in your 850 but wont do your mpg any good Quote Share this post Link to post Share on other sites
jeffbebe 1559 Report post Posted July 21, 2014 3.91 seems to be a pretty common upgrade. Think stock is 3.15 or even 3.64 in the 4 speed. Quote Share this post Link to post Share on other sites
Boowhup 26 Report post Posted July 21, 2014 (edited) Not sure on te total clutches in it, info I have is from the previous car's owner. Will drag out te receipt and see if there's more information. I can relay questions through and find out Edited July 21, 2014 by Boowhup Quote Share this post Link to post Share on other sites
Boowhup 26 Report post Posted July 27, 2014 Found the receipt, 2 new clutches, replacements , so not extra. Make an offer - can also supply axles etc for extra if required. Quote Share this post Link to post Share on other sites
Boowhup 26 Report post Posted November 10, 2014 Still have this kicking around in the car. Offers with whatever axle / subframe parts you need to go with it. Will probably remove after christmas and try and sell it for real. Quote Share this post Link to post Share on other sites
Boowhup 26 Report post Posted December 16, 2014 Bump. Currently making an excellent object to stub my toe on and trip over when moving the bikes in and out of the garage. Quote Share this post Link to post Share on other sites
