Quote:
Originally Posted by ornicar
UP please 
I am really interresting about this topic.
Details ofmy project : i have installed 135i front brakes on my 125i 6MT and now i want to install the 135i whole rear axle (for rear brakes benefits).
E30ROB can you please tell us if the rear 135i propeller shaft match with the 128i front??? Do the splines shaft between 125/128 & 135i are the same?
It seems that my 3,23 (188) diff doesn't match with 135i 1/2 axles(lengths are a little differents) I measured the diffs width (between the output flanges) and my 3,23 diff (small case 188 type) is shorter than the big case 215 type
One solution is to find a diff (~3,46 ratio) that match with 135i rear axles and with my 125i propeller shaft (4 screws). Do this diff exist?
gixracer If i have correctly understand you, an other solution (and maybe better) for succeed this swap is to use "335 auto axles mating to 128 rear diff" Correct? Do you have the P/N please?
Thank you for your help & clarifications and sorry for my poor English
All suggestions are welcome
Best regards |
The splines don’t match between 135 rear and 128 front. Been there tried that.
Any of the 335 hubs will work, hubs are 10mm inboard and allow better square offsets.
You can then use large stub axles Fromuth 328 or an auto 335.
Use this link for help on diff size
http://http://www.vacmotorsports.com/news/335i-and-135i-differential-faq-no-lsd-really-1483338466.html
Make sure you have the matching axles for the diff size. Just because they”fit”doesn’t mean they work. Part #’s are all over the board, check on realoem.com and see what you have access to.