Or just keep the original diff from a 190D 2.5 auto ? It was a Jo doing it in the garage. 1981-1985, 380 SL, M116, 2.47, 1.3 Liter 1987-89 3.27 No ASR the ratio is one thing, you also need to make shure you get the correctly sized flange, and the correct width of the diff. the 300CD ought to have a turbo, its a US/america specific car and nothing that came stock in europe atleast. i have a 400e 1992 v8 (nitrous) and I want to do 1/4 miles with , which is the most higher ratio I can put on without big modification. the thing you need to check is that you have the starter on the right side of the engine, if it has, then it will fit, how much work there is to get it to work i dont know, probably quite an upgrade from the stock w123 auto anyhow, got a w201 with the auto, and realy like it, was surpriced how good if felt compared to the many diesel autos ive driven (300tdt) althou that might be due to bad maintance on the diesels. Simple put, anything lower will be lower, 2.65, 2.47 or whatever you might find. is it the higher the ratio the faster acceleration? Clue me what to do. - PeachParts Mercedes ShopForum, Near-flex disk failure - PeachParts Mercedes ShopForum, w124 300TD differential years of compatibility..... - PeachParts Mercedes ShopForum, Dieselmeken is now selling MW pumps with 8mm elements - Page 3 - Mercedes-Benz Forum, 240D Differential swap - PeachParts Mercedes ShopForum, Fuel exonomy - Page 2 - Mercedes-Benz Forum, Final drive – how to change on w201 | Mercedes-Benz turbo, Differential differences - Mercedes-Benz Forum, w116 rear differential and axles - Mercedes-Benz Forum, Rear end clunk during downshift? h. the thing is that the flexdiscs are differently sized at the diff atleast between the v8 and straight.six engines. This sounds more like a propshaft problem to me. 1978–1985, 240TD, OM616.912, 3.69, 1.1 Liter Since its a w126 diff from a v8 the yoke/flange will be bigger than what you have today and wont fit. Ratio is 3.07 but I haven’t found any reliable method to determine the dimensions or alternatives units. If the noise hasn't gone away after changing the diff, then you sure the problem is in the diff ? Sorry this is really late. Something went wrong. JavaScript is disabled. thats great info Ben! 1992      2.87, 300E 124.030 185mm 1982-1985, 300DT, OM617.952, 3.07, 1.1 Liter BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. Thanks for the reply. 1985, 300CD, OM617.952, 2.88, 1.1 Liter, 1981-1985, 300TD, OM617.912, 3.46, 1.1 Liter Hello, 1982-1983, 380 SEC, M116.963 3.8L V8, 2.47, 1.3 Liter So yesterdag i bought a 2.82 with number 235814 of 335814. Working great when pulled. 1988-1991, 300 SEL, M103.981 3.0L I6, 3.46, 1 Liter Doable? The differential is the same on a w1114, w115, w116, w123 and w126 (first generation) a first generation w126 diff will fit on a w114,but wont fit on a 1986 w126. if you more RPM, the only option i can think of would be fitting a 4.08 or 3.92 diff from a w115 220d/200gasser, in the housing of a 300SE (that has the smal housing, compared to the big housing you have today). 3.69 or even 3.92 Has almost no play. 1986-1987, 300 SDL, OM603.961 3.0L I6, 2.88, 1.1 Liter 2.5 something i guess…Thanks for your reply in advance. Where BMW is a lot more common atleast in this part of the world. they have some different widths, and thus would require different driveshafts, The w124 open diff should be somewhere along 24cm and the ASD version has a width of about 28.5 if i recal correctly. I am looking for the C240 diff ratio please. https://mbturbo.com/wp-content/uploads/2016/03/3.07-differential-w123-used-2.jpg Linus, thank you for your insights. Any box would survive “normal” driving without a problem imo, but how do you plan to use it? the stock diff will probably sustain, but no, the gearing isnt the best. 1972-1976, 280/E, M110, 3.69 / 3.92, 1.1 Liter 1968–1976, 220D, OM615.941, 3.92, 1.1 Liter Well, I didn’t realize the 300CD doesn’t have a turbo, so nevermind. Victor, i dont know realy, i think the larger v8s had like 3.46, 1981-1985, 300TD, OM617.952, 3.07, 1.1 Liter 1968-1972, 250, M114, 3.69 / 3.92, 1.1 Liter so its not super far of from stock, but stock is fucking horrible, so i would swap it as soon as possible :P like 70km/h is the absolute top one wants to drive the car :P, the engine is screaming, its a pain in the ass, i dont know if you have an automatic and is missing the fourth gear? If you are switching to a final drive from a v8 to a car without v8, you have to switch the yoke, and with that the “spacer washer”. The W111 diff’s are generally 4.08 on US cars, and 3.85 or 3.69 on Euros. it felt like it was taking off in 4th gear, although I never got it up above maybe 40 mph. The differential is the same on a w1114, w115, w116, w123 and w126 (first generation) a first generation w126 diff will fit on a w114,but wont fit on a 1986 w126. Would the diff bolt up directly? your w114 today have a 90mm CC flexdisc, the v8 diffs is at 110mm CC. I had brought the CV axles new locally to get the lifetime warranty these had to be modified on the rotating parts that go in to the differential since they weren’t the can type axles. id say about 2000-2500rpm at cruising speed is about optimal. Would you happen to know which differentials would fit as replacements for my 1996 S124 fitted with OM606.910 diesel engine, 722.4 auto box? 1985, 300TD, OM617.952, 2.88, 1.1 Liter it wont make much to go from a 3.07 differential to a 2.88 (2.88/3.07 = 0.93) 1968–1976, 200D, OM615, 3.92, 1.1 Liter I’ve got a ’76 240D with a 4 speed manual. 1984-1985, 500 SEC, M117.963 5.0L V8, 2.24/2.24 LSD (2.47?) 1991-92 3.06, E320/280 – 124.028 / 124.032 / 124.0992 – 210mm What diff or sub frame type should I aim for. 1985, 300D, OM617.952, 2.88, 1.1 Liter 1986-89 3.07 No ASR yeah, that ought to be about it. Stock photo, may not be exact item pictured. Copyright © 1995-2020 eBay Inc. All Rights Reserved. for 70mph,a i would suggest a 2.47 or something alike, it will be slower, it will rev less, and get a tad higher mpg (not a promise, every engine has an “optimal” rpm they runs best at.). I am interested in effecting the greatest change possible to the driving experience with the least amount of modification. I am looking for a 300TD to swap into my W115. you need the correct driveshaft vs the differential type.. 300D Turbo, 300TD Turbo and E300 Turbodiesel with automatic transmission does all have the 2.65 ratio. 3.64. 2.82 according to internet, but i have only found 3.07 on om606 automatic cars, the fivespeed had something along 3.46, will update this, Chart of the different differentials on the w201 chassi, 250TDT om605 turbo manual fivespeed 717.460 I’m planning an engine swap, my little 240 needs some more pep! 1982-1985, 300D, OM617.912, 3.46, 1.1 Liter So can I assume a decrease from a 3.07 to a 2.24 would yield about a ~30% drop in RMP’s? My email van_domselaar@msn.com, Hello Linus, 3.69 revolutions of the propshaft/driveshaft/cardanshaft whatever you choose to call it, will turn the wheels one rev. your diff-ratio would probably be something like 3.27 or 3.07 id guess. 15" Bundts, Lorinser etc, 1981-1985, 300TD, OM617.912, 3.46, 1.1 Liter. 1990-91 3.07 I’m looking to put a 3.07/3.06 or other ratio in my W126 Gen I 1985 500 SEC. 1973–1980, 450SE, M117, 3.06 / 3.07, 1.3 Liter Any chance you know what diff ratio I need for this slightly rare, 24-valve engine? BUT if you grab one from a v8 r107, you would either need to swap the flange/yoke of the diff, or change/rebuild your driveshaft to accomodate the larger flexdisc. Wheels will be either 14′ or 15′ with a lot of rubber for soft driving. 1978–1985, 280TE, M110, 3.58, 1.1 Liter, Years,Model, Engine, Differential Ratio, Differential Case Size, 1981-1984, 300 SD, OM617.951 3.0L I5, 3.07, differentials, gear-ratios and compatibility, http://mbturbo.com/how-to-change-final-drive-w115/, http://mbturbo.com/how-to-change-final-drive-w123/, http://mbturbo.com/overhauling-a-differential/, Differential from W124 in W126 300SEL? USA 2.24 with/without ASR yes, any of the diffs from a r107 up to 1985 should fit. W108 (250SE) is being fitted with M119.066 engine/722.353 automatic 4 speed transmission. Is there a way to determine, before removal, if it’s the desired ratio? 1988-90 3.27 (1988-89 no ASR) I didn’t see listed a 1980 300CD on your list for what the final drive ratio would be..i’m assuming a 3.07? I took a little material off the end where the bolts fit and they rotated freely after that. Axles, Bearings & Differential for Mercedes-Benz 230/240/280/300 (1977-1985) W123: Axle Shaft Assemblies and Parts, CV Joints I want to put that ratio into my ’84 300TD and I’ve found a guy parting out an ’85 300D. 1990-1991, 350 SDL, OM603.97 3.5L I6, 2.82, 1.3 Liter 1973–1980, 450SEL, M117, 2.65 / 3.06 / 3.07, 1.3 Liter 1985 is the magic year that the differentials cant pass. i dont know the gear ratio of the w140 300SE, but dont think it will be better than one of a w124 300d, Have a w111 with 4.08 ratio and want to swop for 3.23 – 3.27 which Mercedes vehicles can I get this ring gear and pinion from or from which after part reseller get a flat-screwdriver or something to scrape old rust and dirt of that ear, and then a sandpaper or alike to get it a tad shiny, that way the numbers pops the best. OEM Mercedes Used Differential with 3.46:1 gearing. Haven’t seen other ratios to this model. When I did drive the car before removing the M130 engine is was very slow. 1972-1980, 350 SL/SLC, M116, 3.46, 1.1 Liter “al” w124 diffs will fit the chassi as far as i know, but do you want a different ratio, a bigger differential or something else? I measured and measured after the 12 time it fit. 1973–1980, 350SE/350SEL, M116, 3.46, 1.1 Liter 722.1. Those numers, i can’t find any info about them. It will fit straight away, a v8 differential is the same no matter what car (up to 1985) so a 450sl will do just fine, you might need to keep your driveshafts, I’m not shure about the width of the r107 vs w126. my w123 m102 with 5 manual gear got the differential noise problem when accelerator around 80km up. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! the diff remains but the engine and tranny was changed. Hello, I am doing a OM605 Turbo Manual swap from a S202 C250TDT to 190D 2.5, do I need to change the diff from the S202? there is a little ear that sticks “out” at the bottom at the side of the backplate. Ok, thanks for the clarification. 1986-1991, 420 SEL, M116.965 4.2L V8, 2.47, 1.3 Liter Thanks for a very interesting page. i am building a slc rally car and need lots of power from standstill. ive lsiter 1982-1985, but might be wrong about that. Differentials & Parts for Mercedes-Benz 300D, Tell us about your vehicle to find the right parts faster, 1 product ratings - Differential Bearing-RWD Timken LM300849, 1 product ratings - Differential Bearing-RWD Timken LM503349A, 15 product ratings - TIMKEN BT114 TRAILER WHEEL BEARING KIT Timken SET6 LM67048 / LM67010 U.S.A. MADE, 1 product ratings - Mercedes R171 W203 W211 OEM Rear Pinion Seal Differential Input Seal CORTECO NEW. OK I hear you man. 1982–1985, 300CD, OM617.952, 3.07, 1.1 Liter If you have questions about international shipping or want to combine shipping on multiple items, please contact us directly. 1991, 350 SD, OM603.97 3.5L I6, 2.82, 1.3 Liter Required fields are marked *. Usually, differential oil is good for up to 80,000 miles without changing, however it is commonly overlooked. I would look at a larger v8 w108, that’s your best bet i think. I’m specifically looking at a Rear Diff from a 1973-1980, 450 SL/SLC. Get the oil in the differential warm before you drain it, it will help get the impurities out. 1993-95 2.65, E420 124.034 210mm 1979–1980, 300TD, OM617.912, 3.46, 1.1 Liter Any w124 or w201 transmission would work (from a straight engine)

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