E30 differential differences. Nov 4, 2015 · Hi, I've been told to look for an E36 EVO Differential to be used in my E46. Experience performance, durability, and adjustability with our fully forged, noise-free LSD. 10 which im told will make it a bit short? but as its being welded i cant see it being BMW Transmission & Differential Oil This page covers fluid information and recommendations for BMW manual and automatic transmissions, rear differentials, and front differentials on xDrive models. Available for E30, E36, Z3 Dec 8, 2003 · I installed a 3. Mar 17, 2012 · What are the different ratios for the E30 LSD diff. Z3 M differentials bolt into the E30, just need to use E30 differential flanges for the halfshafts to work, right? Or I could use Z3 M differential, flanges, and halfshafts. Odometer 276000km. I have noticed that they are available from the M5 and most of the V8 5 and 7 series BMWs. Perfect for professional drifting, motorsports, and daily driving. Cost effective, tough, direct fit plate LSD's from Kaaz. so I really need someone else with all the answers to chime in. Apr 13, 2014 · What I can tell you having sourced a new diff and gears for my E30 is that there are 3 size casings - small, medium and large. Its always a good idea to use the best tools you can get your hands on and the job will go a whole lot easier and more Apr 26, 2009 · Z3 diff is 3. I was able to pick up an open 4. Well the whole M3 engine, trans, and diff would go in, so the ratios would be from the 1995 car. The “e” denoted “efficiency” and was referred to as eta, the Greek character, and was the first time BMW designed The main differences between the 325i and the 325e are in the engine. Differential The Z3 uses the same differential case as the E30, and is therefore a direct swap. A diff for my car. Many of these differentials (bolded) are featured in E30’s. 2 diff has its own housing and different driveshafts. The rear cover comes off easily, but be prepared, you may need a new gasket, the drive flanges also come off easily, but clean up around them first so you don't drop dirt in your nice new diff. Will the old one transplant ok? FinalD E30 Zone Camper Posts: 1098 Joined: Wed Apr 25, 2012 10:00 pm Location: Bristol Fri Jul 05, 2013 7:18 pm Sep 16, 2008 · I am no longer running the stock diff, so i no longer have a speed sensor but still need a way to retain the stock speedo and odo. 73 "limited slip" differential ("LSD"), where the 325e/325 cars ship with an "open" differential, with a Apr 7, 2012 · I am trying to track down some info about fitting a large 210mm diff into my e30. I have seen the E34 diffs appear to use the same case though but with a different rear cover, so may look in to that. Sep 18, 2023 · Why a LATE model E36 328i or M3 driveshaft? Early driveshafts have a 3 bolt mounting point to the diff and as such won’t fit with the standard E30 diff flange. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm Dec 3, 2013 · According to the God of all things diff. And yes tjts1, I agree with your comment about how explaining this to some people is like explaining sex to a virgin. 27 (very rare). Here I will explain what is the difference between open differential and LSD November 2008. I´m up to change my weak M3 E30 rear driveshafts and rear arms to the stronger Z3M versions. Over the years, they were installed and other types as Visco LSD, locking type (EH Differential), Torsen… but this was rare. Oct 27, 2011 · Hey guys, Im getting ready for my S50 swap from 1995 m3 3. 5L M20. I'm told a few E30 iX were equipped with the viscous-type, and there are a few Z3 fitted with torsen types Differentialtabelle - BMW E30 Die mit einem "X" angegebenen Differentiale wurden über den gesamten Produktionszeitraum des jeweiligen Modells verbaut. ? Any help would be greatly November 2008. Note that the torsion is around 500$ for that model. If you are going to use e34 or e30 diff on e28, you need to make sure the new diff is the same type (188 or 210) as your current. Apr 20, 2022 · That looks like an E30 differential to me based on the ratio, possibly with an E28 rear cover. Different mounting points. My stock E30 one is shot, and I don't want to run poly because I did that for 7 years and to be honest, at least on a street car / DD, the extra noise was annoying. Obviously they are designed to have some compliance in length for suspension movement but how much? BMW Differentials for E30 325, M3All differentials are built to order and we are currently running at least 3-4 weeks out from order date to ship date. 45 LSD is also very very hard to find (fitted to 320iS) SAE30 E30 Lsd diff e [hidden information]e in working condition Also parting out e30 Take offers Engine and gearbox are the same. Dec 16, 2014 · Hey guys! Thanks for reading. I had read the diff is a direct swap aside from the axles. The BMW Z1 roadster was also based on the E30 platform. A 4. 1. Mar 25, 2015 · Using my diff as example there are two small disks or friction plates locking the two wheels together. Nov 19, 2016 · The diffs are very different, but the internals are the same so you can fit a CWP (or entire diff unit) into the e30 diff. Cheaper, faster and easier to go that route. BMW shop manual only shows procedure for replacing complete diff but nothing about swapping gear sets, setting preload or adjusting the backlash. medium case e34, for my friend Andrew, who has also has a boosted e32 735i 5-spd: Note: medium case axle hubs may come in either small or large diameters. Jan 15, 2017 · Hi everyone, As I am new to this forum I'll introduce myself first. An absolute must for V8 swaps. It utilized the S14 engine, a 2. Many of them can be grabbed from E28, E24, E32. May 7, 2017 · Hi Cutters, After some advice plz. 5 while the e is a 2. A 188 is the correct type for a 325i, and swapping a complete one (including output shafts) is a straight swap, apart from a small adjustment to the sliding part of the prop. 7 liters vs. Some of these differentials are too high for highway speeds. 10, and 4. We carry differential parts for high-performance street use, dual street & track fun, or full-on professional race cars. The front end is a completely different kettle of fish; it employs a differential inside the engine sump before sending power through the drive shafts to the hubs. The 188 types can be recognized by the 6 bolts that are visible on the side cover of the casing. 5 engine - much more so than if a smaller engine (240) gearbox is used instead of the correct for a 325i 260 gearbox. May 23, 2017 · I could feel the ticks watching me. The primary difference being the ability of both wheels to spin in a slip event. Do someone know the differenses between the carriers? What´s the differens between the Z3M rear axle carrier and the other Z3´s? Kaaz Limited Slip Differential for BMW E30, activate maximum grip, traction and control. Jan 28, 2009 · you need to use 318ti parts i think because the Z3 trailing arms are wider than an E30. I have rebuilt. bmw have 3 types of diff, small / medium / large and they only differ across the range with regards to the back plate, the 6 pot e30s all came with mediums - so if you get any medium case diff it'll fit. however the i has a higher redline and about 168 horsepower from the factory while the e has about 127? (not sure on exact number i just know it’s in the 120s). 73 "limited slip" differential ("LSD"), where the 325e/325 cars ship with an "open" differential, with a I have rebuilt. (does the 02's diff mount ride in the cover like e30s?) and the output flanges are a direct swap too. Small case diffs will have six bolts, while medium case diffs will have 8. Found this while doing so BMW research. Jan 16, 2016 · My current questions revolve around limited slip or open, can any e30 differential fit, transition between medium and small case. I have a spare 95 m3 drive shaft here. One of the big differences between the e30 325i and 325e/325 models is the rear differential. ***NOTE: Due to variances in the manufacturing of bearings, you may need to use different shims for the pinion and carrier bearing caps as the tolerances are not always exact. This is especially convenient for the lower ratios Z3 diffs can offer; the 3. All new bearings, seals, clutch discs, dog eared plates and necessary bolts for a full refresh on your E30 325 differential. 27 small case open differential from the E30 and with both units on the bench I took the opportunity to discuss E30 differentials and their differences, including how to identify Oct 18, 2009 · Here is the question. They are the exact same casting but the open diff seems to have around 5 to 10 mm machined from the inside part that the differential rides in. The first BMW M3 model was built on the E30 platform and was powered by the high-revving BMW S14 four-cylinder petrol engine. Table of Contents Understanding Nov 1, 2018 · The M3 is a completely different car than the rest of the E30’s, sharing very few common parts. Iirc, the E30 driveshafts don't bolt to the flanges, so you have to fit E30 small case output flanges. Gear ratios commonly available in the U. ratios are only suitable for use with an E30 gearbox. I want to ditch the e30 drive shaft and flex disc adapter from revshift (getting lots of vibration). This upgrade is ideal for improving handling, power delivery, and drivetrain stability, especially on aging vehicles where the original bushings may have deteriorated. 3. 93 328 sport LSD (188), but most people seem to think they won't fit, any particular reason? Limited Slip Differentials are referred to as a Slipper or as an LSD. 10 for $200 at a local yard. Only the Compact diff bolts straight into the E30 rear beam, but it's the Type 168 small case unit that can just about cope with the 318Ti and it's getting hard to find one now that doesn't whine. the 318 ti is the compact, and thier rear suspension is taken from the e30's, so that, i think is where the differences stem from. 73 is a nice ratio, but it's more suited for the original M20. #E30lsd #E36lsd #racingdiffsVideo shows all differences and similarities between E30 and E36 small case LSD. LSD BMW 188 M3 E30 M12 MD41 BMW 188 LSD parts Limited Slip Differential internal parts for BMW 188 Rear axles. Visit RacingDiffs for high-quality LSD conversion kits. does anyone have any details on how the bmw differential trigger wheels work? what changes between gear ratios, tooth width, number of teeth? what type of sensor is the stock speed sensor, vr? hall? Nov 5, 2019 · All E10, E21, E30, and E36 4-cylinder models (except M3) fit with small-case differentials with a ring gear size of 168mm. By adding a second mounting point you are effectively spreading the load your stock diff mount and bushing Dec 31, 2024 · One small problem with using an E30 diff in an E28, you need to change the rear cover and the drive flanges. That's where the E30 dual mount conversion comes in. Sometimes the term "large case" diff is used. The diff ratio will be quite abit lower than an E30 diff though but depending on the size of the casings, you can use the LSD unit out of the E36 diff with your own final drive and casing May 22, 2020 · The diff I've got my E30 is a Z3 Torsen Diff so non M, and has the smaller ring? Than a 188 E30 one so question is what speed sensor do I need and that'll work? 325i has the m20b25 while the 325e has the m20b27 the b refers to the engine displacement so the i is a 2. My name is Jeroen, and i drive a 2000 E46 323i. Following the launch of the E36 3 Series in 1990, the E30 began to be phased out. are 3. 7K subscribers 240 May 10, 2015 · Why would anyone want to replace the unbreakable 260 Getrag gearbox with the 240? Rear prop section lengths differ slightly depending on what diff it has - small case for 316, 316i, 318i and 320i and medium case for everything else. Are these axles really 'beefier'? Then I would install the Z3 M trailing arms too. You can find a wide variety of ratios in many E28, later E24 & E23, most E30. The camber angle seems to be very bad. They are different part numbers as well. Feb 17, 2006 · Joined: Feb 17, 2006 Posts: 2,833 Likes Received: 0 easy peeps ive been offered a diff off a 320i e30 for my e30 325i. Identify 168mm, 188mm, and 210mm differentials with examples of specific models like E30, E36, E34, and M5. You can find any E36 sedan or coupe LSD and use that, or you can swap the internals from another 188mm case LSD. Some differential are “open” and some are “limited slip” or “posi-traction”. Jun 5, 2008 · One more time: all 6 cyl E30's plus E30M3 have the "medium case" diff all 4 cyl E30's except E30M3 have the small case diff The ix diff is LSD, but it's a viscous type vs the clutch type found in 99% of other BMW LSDiffs. Perhaps I needed ones from a different year or something:dunno Oh, well- I ended up Picked up a new differential for the e30! Finally getting away from the stock ratio from the 325e and moving to something with appropriate gearing for my 325i 2. Although both models have engines from the same M20 family, the 325e had more displacement (2. The difference between small case and large case diff is taken up by the diff output flange not the driveshaft. but it is a plug and play item if you have the proper e30 output stubs installed and proper speed sensor in to match the e30 (e30's have 2 styles) Feb 7, 2008 · Bimmerforums is the preferred online BMW Forum and community for BMW owners. As I Apr 17, 2020 · This video shows you how to determine which RacingDiffs Progressive LSD conversion set to get for your BMW differential. You've not provided any pics, so we're all just shooting in the dark. If you're interested in having me rebuild your differential, click here to find out how!https://garageaholic. A differential transfers power from the driveshaft to the wheels, while allowing the wheels to spin at different rates around corners. However there is enough length in the splines to take account of this. What's a limited slip differential? 325e vs. There is a set pressure on these that keeps them together unless the difference in the traction of the two wheels is great enough to overcome the friction plates. OP, the solid diff bushing you show in your photo is the OEM 325iX unit, BMW PN 33-17-1-134-802. I thought that i could use the stock e30 rear axle carrier but it seems that somthing is really different between this one and the Z3M. Dec 22, 2021 · Article by: M. 23 slipper last weekend from an e34 for this purpose. Last edited by paanta; 12-10-2009 at 03:11 PM. I converted my open-> right to a torsion on the left. Obviously the body and normal differences between pre and post face lift will hold true. Shop now for a transformative driving experience. Even Performance Differentials Contained in this document: Choosing a Performance Differential, Doing the Maths, What works best in your E28, Real World Examples (E28, E23), E28 Final Drive Ratios, E28, E23, E24 General Information, E36 Final Drive Ratios, E36 General Information, E30 General Information, Rebuilding Tips, What Does a Limited Slip Differential Do?, Differential Bushing Upgrade. I'd just like to know what's involved going from a small to a medium case diff - how interchangable are they? Will I need to swap the rear half of prop and the 2 halfshafts etc etc. Diffsonline has 20 years of expertise in BMW differential upgrades and rebuilding. 73 LSD from an e30 325is in my 318ti yesterday. 91, 4. . Jan 3, 2012 · I just spent the better part of 2 days replacing a broken subframe in a 318is this looks real familiar. The E30 325iX model was the first BMW to have all-wheel drive. Jun 19, 2013 · For Internals of the 168mm there are 2 standards for clutch discs and steel discs; the center ramps are also different heights. Although both models have engines from the same M20 family, the 325e has more displacement than the 325i (2. Feb 5, 2020 · There's about a 10% difference between the speed of an auto and a manual E30 for a given engine revs, when in top gear and with the same diff. 73 ratio. com. Ask how you can make a difference! Dec 17, 2011 · That's a good question. All done! I've swapped from Small to Medium case about 6 times, the only difference I've ever found is the speed sensor plug from an older diff was different than mine. 2. will be about 10% higher for the same speed in top. Pelican Technical Article: BMW E30 3 Series SpecificationPelican Technical Article: Feb 28, 2009 · Re: How to: Differential Swap by joecrotch » Mon Mar 23, 2009 11:54 am not really interested in doing it just wondering if it is done or can be? sorry shoulda mentioned that The Free A Yoshi Foundation. The ratios that you mentioned, were you referring to the stock e30 differential that's already in my 89? WATCH THIS 10-MIN quick guide before choosing and buying your BMW differential (E28, E30, E34, E36, E31, E32) Video covers briefly diff case differences, modifications needed for usage Dec 8, 2016 · In this article I will go over the steps involved in swapping out differentials in the BMW E30 3 Series from 1984-91. 64, 3. Differential Main article: Differentials One of the most curious components in the drivetrain, the Differential is a massive lump of metal bolted to the rear subframe. ratio, so if you keep the same diff, your engine revs. The original has a different speed sensor plug to the rebuilt one. Jan 21, 2016 · Driveshafts are the same (only difference is the abs ring). Jun 11, 2018 · This is for a 240sx. 15 medium-case like the M3, but has a slightly different diff cover (finned). From what i've heard, you'll need a medium-case diff as the small-case ones can't take the extra torque supplied by an S50 3. Sep 24, 2009 · The whole diff will fit an E30 as the are the same casings. So, what is the main difference between E30 and E36? The core difference is E30 edition has a robust construction design to tolerate insane abuse during the rally, while the E36 edition is more luxurious with weaker components for comfort purposes. Just swap the output flanges and the rear Feb 1, 2012 · Lessons learned: Any time you use an E36 diff cover on an E30/Z3 differential you will need the E36 speedometer reluctor ring ($6) + speed sensor (10+ days from Germany), and we would pre-order matching body color paint 1-2 weeks in advance, as well as the swaybar mounts and any seals that could be potentially bad. 15 M3's are very hard to find, most M3's came with 3. 10 diff is the perfec I removed the 4. The LSD is different, as it is a single ear E30-based setup. E30’s you can get a healthy diff for around 350. What is the difference of the output flange geometry front to back on the e30 diff vs. The small case output flange is longer. The z3 differential is plug and play after flanges and cover are swapped over from a medium case e30 diff. The stock e30 shaft is about 57 inches (+/- about 1 inch). 0 I understand that the diff in the 3. 325i The primary differences between the 325e and the 325i are in the engine and drivetrain. Jun 25, 2023 · The e36 diff has different mounts on the case itself which is why I was wondering if the internals would swap in to an e30 case. Explore the technical benefits in cooling, strength, and long-term drivetrain reliability. Today we will talk about 3 types of BMW differentials What is the difference and which differential does my car have? The 188 or 188mm differential is found on chassis like E28, E30, E32, E34, E36, in turn, 188k on E39, E46, E53, and the more modern models like E86, E90, E92, F2x, F3x mount the 188L How do I know which differential is in my car and which 188 should I buy? If you have it Dec 14, 2006 · Does anyone know the differences between a type 188 and 188k differential; I bought an E39 323 diff (188k) off ebay, cheaply, to try and fit the 3. If the bearing is on the rear section (as in E30 M3), the bearing is tensioned toward the diff. In this article, we will explore the key distinctions between Diff E3 and E30, their applications, and the impact they have on vehicle performance. It is also worth more than a common m3 diff. Does this imply that an E36 differential would fit an E30? This is more of a query of how the article was written. build/product/188mm-bmw-differential-rebuild/Tod A BMW differential and it's related differential parts help put power to the wheels. 2 M3 and the diff in a E36 M3 3. Yes I Feb 13, 2012 · I have a hot tank cleaned media blasted early small case 1985 unit I could measure up against a 188mm 2003 z3 case if wanted to know the compatibility between earliest 168mm e30 diff and latest e30 188mm compatible units from z3. Below is a table of differential gear ratios offered in various BMW models: Sep 12, 2021 · I am looking for differential specs and torque values for E30 small case. By looking at them in isolation and not knowing which car they have come from, how do you tell the difference between Small and Medium case diffs???? My original thought was that only Small and Medium case diffs were available on the E30s and that Medium case diffs are LSDs and Small case diffs are open diffs. Contractually, body modifications to any BMW were Apr 5, 2019 · What's not easy about swapping a six-cyl limited-slip diff? The Typ 188 "medium case" bolts right in, just needs a different rear cover. 0, and im wondering if the m3 differential just bolts on into 1988 325is e30? or do i have to do some modification? [ i got s50 tranny driveshaft differential ] and another question does e36 m3 differential is exactly the same as non-lsd regular 325i size? [ my cover plate broke, and im wondering if i can just buy any e36 differential The main differences between the 325i and the 325e are in the engine. Perfect for BMW enthusiasts and mechanics. is fairly close to its limits when coupled to a 2. 7 liters versus the 325i's 2. Upgrade your BMW with the 168mm Limited Slip Differential Unit from RacingDiffs. 45 ratio as all other 318's and the internal LSD unit is the same. An open differential is oftentimes cheaper Jan 3, 2015 · The two sizes are directly interchangeable, with just a slight adjustment to the length of the rear section of the prop, by loosening the sleeve nut behind the centre bearing. But here's a break down for you: LSD was an option new from the dealer/factory, and cost about $300 extra back in the 80's. 8 or MZ3. How To Remove & Install a BMW E30 Differential | SIKKY Manufacturing SIKKY 14. Large = 210mm Medium = 188mm Small = 168mm The medium case diffs were used in for example the 6 cyl E30 cars. Jun 15, 2017 · What is your ideal differential ratio for the e30 06-15-2017, 07:42 PM Discuss the different ratios, just curious to see what everyone prefers 5 Voters The K swap e30 is fun but it begs for a different differential. We offer BMW limited slip differentials, stock diff rebuilds and the highest quality diff parts & accessories available. Older style clutch disc (e21/2002) has different spline standard than Modern E30/e36 style Modern E30, E36 spider gears also are a different profile than the older units. Jan 24, 2016 · Article by: Don Gale Article applies to: all e32 and e34 models. 45, 3. You can swap internals, but rather than do that, just sell the one out of the E30 and get one for an E34/E32 735. Note that E30 diff. Will the old one transplant ok? FinalD E30 Zone Camper Posts: 1098 Joined: Wed Apr 25, 2012 10:00 pm Location: Bristol Fri Jul 05, 2013 7:18 pm E30 E36 Ti/Z3 Notes: E36 E30 Diff swap to Ti Output shafts from E30 must be from a car with ABS Use E30 output shafts and axles with a medium case diff E30 LSD is clutch-type, Z3M is Torsen E24/28 Diffs require Diff cover swaps Most input shafts are the same (4 bolts), M cars may have 6 bolts E30 5 lug swap Use Ti trailing arms Dec 5, 2012 · If you can twist the differential out-put flanges in the opposite direction with your hands then you've got a very worn differential. Steering The steering rack is one of the standard upgrades for the E30, thanks to its faster turn rate. The size of the case is dictated by the diameter of the ring gear. Unlock the full potential of your BMW with our high-performance Type 188mm Limited Slip Differential, specifically designed for the E30, E36, and Z3 models. Most 325i cars ship with a 3. Jun 3, 2013 · Hi guys, I am about to pull the trigger on a z3 lsd to put in the s50 swapped e30. LSDs were fitted as standard to the 325i Sport and M3. Note: for the purposes of this page, "Vintage" refers to all BMW cars built up to and including the E30 3-series. Whereas the 3. The M3 has a modified unibody, flared fenders in front and back, different front and rear valances and spoilers, etc. Professional installation by a shop experienced in rebuilding differentials is strongly Apr 14, 2025 · Learn why BMW E30 owners are replacing stock differential covers with billet aluminum versions. 46 would be the one from the e30's. At this point in history the only real way to know what you have is to look up the skirt of the car and check the tag (but not always correct!). Thanks for watching, Oct 2, 2014 · Hey guys, Question - I know that driveshafts are different in E30s, but what about the half shafts coming off the differential? Are they all the same? Dec 12, 2017 · You can either swap the reluctor from an e36 diff into the single ear case/carrier, or the second time around, I cut the e30 reluctor ears to e36 length and it worked fine (they have matching pulses per rev). Nov 6, 2019 · BMW E30 differentials are essentially the gearing module that connects the input driveshaft to each of the rear wheels. if you had a newer E30 you could just gut the hubs and brakes from the z3 arms and put them on your e30 arms but the bearing sizes are different, arent they? Nov 26, 2011 · e36-7 has funny output stubs somtimes, also slightly different rear backing plate cover to fit small speedo spider. Dec 5, 2012 · Bimmerforums is the preferred online BMW Forum and community for BMW owners. Like when one wheel is totally on ice and the other has traction, or when turning. Conventional limited slip differentials like the E30's contain clutches that wear out over time (just like the Oct 4, 2008 · Right, not an E30 but an E30 rear-end, my car: But unfortunately for my small case diff, I've stuck this in it: I'd like to upgrade to a medium case diff, ideally from a Z3 2. The latter was never officially imported to the United States, but given their age, they are increasingly found for sale thanks to the 25-year exemption rule. 7. 5) but drastically less horsepower. E46 is a large case diff and is different to all the other diffs in relation to how it bolts Dec 9, 2018 · I’m currently in the process of swapping an M20B25 into my Series 2 E30, that previously had an M40 in it. The tools used were: 1/2 inch drive ratchet and deep 30mm socket, short single hex 19mm socket, crack bar, 1/2 in drive 8mm allen bit socket, 3 large extension bars, 2 19mm combi spanners, 2 17mm combi spanners, large flat headed screwdriver, trolley jack and axle stands. With a growing family and a limited budget, he envisioned a hatch back E30 estate, based on a four-door 3 Series. The 188 Limited Slip Differentials parts are available for the following types: BMW E30 M3 BMW E24 BMW E28 BMW E34 BMW E36 BMW E39 Jul 25, 2009 · the facelift 316i is the later M40 engine and thus completely different and is a 1. It said that the instructions apply to the 1995-1999 318ti as well. Nov 24, 2007 · Most "s" cars had LSD's. We will walk you through pros, cons, and differences between each type of differential found in BMWs and explain gear ratios to help you choose the best differential for your BMW and specific driving needs. 64 and it will likely need to be rebuilt when/if you do find one. Thanks much for your time and consideration. All BMW models until E36, E34, E32 could be produced with the option “sperrdifferential”. You'll se which parts are interchangeable, what The diff with the taller flanges is currently fitted to the car, it fits fine but I can't help wondering what effect this will have on the drive shafts. 6 litre injected engine. I believe that some E30 325i models with automatics (possibly convertibles) came with a 4. E30 and E36 are the remaining BMW series worth giving a little attention to them. BMW E30 Differential Ratio Guide If you're swapping the drive train in your RWD BMW you will likely want to swap out the rear differential to one with a ratio that suits the transmission and your driving characteristics. It receives power from the propshaft and splits it to both wheels. I took some detailed dimensions noting the differences between a large e32 diff vs. The two types of diff are easily distinguished by the number of bolts holding on the back plate. 25. its also a 4. We would like to show you a description here but the site won’t allow us. Differentials receive torque from the rotation of the engine through the e28 shares same diff case with e34 and e30. This will replace the notoriously unreliable E46 unit, i wondered what the difference was from the Evo to the Standard unit? and incase anyone has an EVo Diff, let me know! Am I just wholesale unable to use a getrag 260 from a non-AWD E30, or is it just a matter of retrofitting and possibly fabrication that are the deterrents? HOW different is "different" when looking at the end of the iX transmission where it meets the transfer case? Am I looking in the wrong places for parts? Jul 22, 2024 · Learn how to determine the differential size in BMWs up to 1999 by counting the bolts on the side caps. Step 1: Enter Final gear ratio (differential)Step 2: Enter Tire Size Dec 9, 2009 · Double check, but I seem to recall the E30 diff won't work on the E34. 0 is just a 325i diff. I picked up a 3. Our professionals are here to help make sure you find the answers you need to your questions and our community is here to help other brainstorm Nov 22, 2014 · It has its own special differential out of the E36's as it uses a slightly different E30 rear subframe. There are two distinct versions of the E30: those built between 1982–87, and those offered from 1988–94. : Differential LSD swap Hope this helps. Jump to: Fluid for manual transmission Fluid for automatic transmission Fluid for E30 Small Case vs Medium Case diff for comparison if you guys ever wondered 🤙🏼 4. The Powerflex Rear Diff Bushing for BMW Z3, E30 3 Series, and 318Ti is a high-performance replacement for the factory rubber bushings in the rear differential. 15 is a particularly popular unit. Those covers are still available, brand-new, from BMW last time I checked. Sämtliche Differentiale gab es mit folgenden Ausnahmen mit und ohne 25% Sperre. Accordingly, ring and pinion gears can be exchanged freely between all these cars. will it fit as i know there is large and small case diff on e30 and obviously dont want to waste the guys time if it wont fit. 36 (2002 Turbo), 3. the 2002 diff? Is the stock configuration the same as the new one? The photo appears to show some deflection but it may just be the angle of the camera shot. You still need the diff to convert it; see the big casing. May 21, 2019 · The 1982–1994 BMW 3 Series was offered as a coupe, sedan, convertible, and wagon (also known as the Touring model). The rear end is similar to the E30, but the differential is a specific viscous limited slip differential with a 3. Feb 12, 2015 · Got an E30 overhaul brewing and Chris Foose is no where in sight. May 30, 2024 · Damage would only occur if you were to run different ratios in front and rear. Explore this differential rebuild service! We fully rebuild 188mm Medium Case Differentials by replacing seals/ bearings/LSD Clutches, even Gear Swapping! Aug 18, 2004 · The differential's "dogtag" is located on the right side by the speedometer pulse sender on a large diff, and on the top left by the diff mount on a small differential from the factory. Keep in mind that this tech article covers all 3 series models, including the BMW E36 318ti from 1995-99, as it uses the same rear end setup. First off, the e30 axles I have most definitely do not fit the ti- seems like the wheel speed sensor portion of the CV is substantially larger and doesn't clear the suspension on the ti. S. This contrasts to the normal differential fitted that is known as an Open Diff. 45 going into my Rotary Powered e30 Front/too view of the diffs side by side. 15 crown wheel and pinion to my 2. Mar 17, 2015 · Although this thread is a little old, I came across it during some research into "stock upgrade" diff bushings. Are you talking about the stock 320I diff or a 323? BTW is thete a difference between the capacity a 320i vs a 323 diff can handle? Also, what's the specs of your car? E30 SECONDARY DIFF MOUNT (DUAL MOUNT CONVERSION) If your E30 is making serious power, your differential is seeing serious loads. You may be able to swap your rear cover onto it, but I'm not sure. I came to this forum in the hopes you could tell me if I can put any E46 diff in my car? I'm asking this because my current diff is broken, and I'm finding it really hard to There are many different options for picking the right differential. I know the mounting points on E30 small case diff are different from E21, but can you swap the internals from E30 diff into E21 diff housing saving the output flanges. 10 differential. The 325i diff is wider than the 318i diff, and pretty sure the ratio's are different. This bespoke LSD solution is perfect for any driving discipline, from circuit racing and hill climbing to daily street driving, providing unparalleled versatility and adjustability. They were not standard on the 318iS, but were on option available to all E30 models. E30 SEITEAnleitungen Differential Jan 21, 2004 · well, hang on here, the 3. Zf transmission btw :) Thanks for the input guys- just trying to work out the vibrations. Some are too low for fast acceleration. Some quick searching shows that this style of diff may have come on small motor E34's but if you look at an E36 diff the mounts on the actual case are quite a bit different. I was reading through the Pelican Parts article about the E30 differential swap. There are several differential types. BMW Limited slip Differentials BMW chose to use LSD friction type (clutch type) produced by ZF. Will that bolt up directly to a 2002 z3 diff? That would be swell. I tried matching up parts numbers to verify fitment, when I came across the difference in case The terms Diff E3 and E30 are often encountered in the context of automotive engineering and performance modifications. If you are using the box that belongs on the M52, you will need a much lower (numerically) ratio. Has anybody got any pictures or Intel on the differences between the diffs in a E36 EVO3. 64 gear ratio differential There are no differences between driveshafts, and it's only after 12 posts that we find out you're not using a standard E30 diff. Oswald Models: All BMWs specified in the table below. 45 was the diff from the e36's, and the 3. Dec 2, 2022 · A table of BMW gear ratio and final drive for various models including E30 E36 E46 E82 E85 E86 E88 E90 E92 and more. Oct 18, 2013 · Waste of time. 5), but drastically less horsepower (121 vs 167). It runs the same 3. It retails for $110 Apr 16, 2007 · The half shafts are different on the diff end, I think the e30 is scalloped all the way round and the Z3 is scalloped between the bolt holes (Or other way around) but they bolted up with no probs. A healthy stock e21/e30/e36 small case LSD should take between 25-30 ft/lbs before slipping. Having purchased a high-mileage 323i, he wheeled it into a friend’s garage and set to work, painfully aware of the consequences should a BMW manager spot his work. Jun 5, 2011 · Put the new diff in. related, otherwise known as 'Gareth', there's a complication when mixing 2. Available at DriftShop. Or, is there any other differential that is suitable for this swap? May 6, 2016 · A 168 diff. Upgrading your BMW’s differential from the factory options provides unique benefits for different driving styles. While they may sound similar, they refer to distinct concepts and have significant differences. At Bimmerforums, you will find technical how-to information maintenance specifics audio advice wheel and tire combinations and model specific details not found anywhere else. I have one here that looks like a 3:40 Download Downloaded 490 times© 2025 E30 Goodies - WordPress Theme by Kadence Themes Nov 7, 2023 · BMW prototype engineer, Max Reisböck, however, had other ideas. The 3. Apr 8, 2011 · I suppose you'd get better gas mileage, but acceleration would suffer quite a bit. Along the way we discovered some interesting differences in the driveshafts that I’ll A great upgrade for drivers looking for added acceleration and grip for the E30 325i and E30 M3! A differential upgrade/rebuild for your E30 delivers performance far above the original factory spec. Most 2002s came with a 4-speed transmission and a 3. there should be lilttle or no difference in the suspension/brakes/drive train (with the exception of the differential ratio). Nov 22, 2014 · I swapped the shaft sections between the auto and manual, which gave me two different lengths, both shorter than the standard e30 manual driveshaft. also, do 2002's come with the medium case differential? IRS? if so the rear cover from the 2002 will fit directly onto the e30 diff. You'll pay a premium sourcing an iX 3. 93 bits with bits from other ratios, in that the crown wheel is a different thickness from other ratios, and the bit it bolts to is similarly changed to compensate. 3L 4-cylinder based on the M10 engine. Jul 5, 2010 · An old thread, I know, but there is a slight difference in the side covers on these diffs from open to LSD. Hiervon ausgenommen sind: Die spezifischen Länderausführungen werden nicht berücksichtigt. kfco pap tdbgrn uaro oycifek xgx chpqkky xljotv xyrsm czlzr