Osiris369 0 Report post Posted March 30, 2022 M50b25tu e30 looking at an lsd for it. Any advice on best source or any for sale? Quote Share this post Link to post Share on other sites
Cammsport 390 Report post Posted March 30, 2022 https://www.trademe.co.nz/3534729142 This is mine. Let me know if you have any questions. Quote Share this post Link to post Share on other sites
Osiris369 0 Report post Posted March 30, 2022 How do you find the 25%? Good foor locking up the odd skid round town? 😅 Quote Share this post Link to post Share on other sites
Osiris369 0 Report post Posted March 30, 2022 What's the difference with small medium large case diffs? Think i currently have medium or large it's about a 4:1. Can i interchange case sizes no worries? Quote Share this post Link to post Share on other sites
E30 325i Rag-Top 2957 Report post Posted March 30, 2022 The difference is the physical size of the case, bigger the case the bigger the gears that fit inside, bigger gears can take more load. Often referred to by the number of bolts holding the rear cover, small = 6 bolt, medium = 8 bolt. Not sure about large as they were never fitted to E30s from factory. You can swap small and medium case diffs in an E30, but you might need to swap axles and or output shafts as well depending on what you swap from and to. 1 Quote Share this post Link to post Share on other sites
325iRod 135 Report post Posted March 30, 2022 This is a handy article, lost of useful info.. https://www.e30zone.net/e30wiki/index.php/Differential 1 Quote Share this post Link to post Share on other sites
