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+--- Thread: Any 2:47 or 2:47 LSD Actual Experience (/showthread.php?tid=5272)
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Any 2:47 or 2:47 LSD Actual Experience - Greazzer - 01-18-2014
Howdy,
W123 Chassis Application / OM617.952A engine, tweeked a little.
Has anyone out there run a 2:47 geared differential in their car and what are your views? EXCLUDING thoughts or opinions on perceived reduced get-up-and-go, I am investigating whether or not it is really as sluggish as folks believe. The circa 1985 flavor had 2:88 which is somewhat obtainable, although tougher to come by these days. The 2:47 or 2:47 LSD in a compatible version for the W123 is really tough. I have only seen two in the past three years at the yards, and I let both slip through my fingers. Once it warms up, I am hitting all yards within 150 miles of my home headquarters looking for one if any folks had positive experiences. Alternatively, does anyone have any leads on one?
So, who out there has done it ? Thanks in advance
RE: Any 2:47 or 2:47 LSD Actual Experience - Druk - 01-19-2014
I've got a 2.47:1 in my 606 to R107SL conversion. It came from a 380SE W126 donor. With a direct gear 1:1 5th (Getrag) it's the perfect ratio. The diff is 'large case' which fits the 107 subframe however the diff as it came had 'plug-in' shafts and had to be converted to the flanged shafts that are on the 107. I had to machine the output bearing housings and convert to countersunk bolts to allow the flanges to fit to the diff. Having done that it works great. This is not a LSD diff. Depends whether you have plug-ins or flanges as to the difficulty.
![[Image: 24-5001.jpg]](http://s62.photobucket.com/user/a10ruk/media/300TD/24-5001.jpg.html)
![[Image: 10.jpg]](http://s62.photobucket.com/user/a10ruk/media/300TD/10.jpg.html)
![[Image: 11.jpg]](http://s62.photobucket.com/user/a10ruk/media/300TD/11.jpg.html)
![[Image: 27-6006.jpg]](http://s62.photobucket.com/user/a10ruk/media/300TD/27-6006.jpg.html)
RE: Any 2:47 or 2:47 LSD Actual Experience - Greazzer - 01-19-2014
I was under the impression that the 1st Gen W126 Differential or W116 (6.9) was a direct bolt-in swap, with no R&D. There was one post on Benzworldo dot com where a person did the swap. The only issue was keeping the original shims since there was a slight spacing issue with the W123 half axles.
BTW -- Beautiful Work !
RE: Any 2:47 or 2:47 LSD Actual Experience - Druk - 01-19-2014
(01-19-2014, 07:27 AM)Greazzer I was under the impression that the 1st Gen W126 Differential or W116 (6.9) was a direct bolt-in swap, with no R&D. There was one post on Benzworldo dot com where a person did the swap. The only issue was keeping the original shims since there was a slight spacing issue with the W123 half axles.
BTW -- Beautiful Work !
Thank-you
. It may well be the case that they're a direct change if your axle-shafts are plug-in type. On my 107 they had been changed to flanged because Merc have stopped supplying plug-in shafts for this model and do a conversion to W123 bolted shafts which my car has had done. The shafts you see in the final pic have 123 part numbers so I suspect that some/all W123's have this type shaft...don't know.
The other consideration is the input flange is approx 10mm lower on the larger case diff as measured from the front mounting flat to the C/L of the spigot. That might clash with the driveshaft alignment?? Don't know about that one as I've also got a one-piece driveshaft which negates that particular problem. The input spider is also a greater diameter PCD. That might/might not be interchangeable with the one from a small case diff
but would cause probs with you bolting your existing shaft straight on. ![[Image: 24-6002.jpg]](http://s62.photobucket.com/user/a10ruk/media/24-6002.jpg.html)
.
RE: Any 2:47 or 2:47 LSD Actual Experience - Greazzer - 01-19-2014
I know that the yokes are swapable, and the 12 pt 30mm nut is the same also, so that's easy.
I wonder if that 10mm makes any difference ? I know there was one person on B W dot org who did it, but he has been on that forum in over a year so I cannot PM him. The only thing he commented on was the shims.
So, maybe the only possible issue will be the 10mm lower placement of the half axles ... ???
Also, is the differential width the same ? I sure looks fatter, so does that effect the half axles ??
RE: Any 2:47 or 2:47 LSD Actual Experience - Druk - 01-19-2014
(01-19-2014, 01:57 PM)Greazzer So, maybe the only possible issue will be the 10mm lower placement of the half axles ... ???
Also, is the differential width the same ? I sure looks fatter, so does that effect the half axles ??
The 10mm drop will only affect the alignment of the main fore/aft driveshaft (in the UK we call it a propshaft) because the rear rubber joint is designed to run at a straight alignment. ie, 0 deg out of true. The 1/2 axleshafts will run at almost any mis-alignment because of the constant velocity nature of their joints. Witness the effect on them if you had a heavy load in the trunk (boot in the UK
) If it helps I can measure the width of both differential cases tomorrow and report back. It can't be that far different however because the flanges and shafts in the new diff were also in the old and ran fine when there; other than me machining 1/16" off the inner faces of the flanges to clear the diff bearing cages. I think it may be an optical illusion. Look at the width of both cases in relation to the width of the rear mounting bolts (which is the same for both cases).
RE: Any 2:47 or 2:47 LSD Actual Experience - swampmonkey - 01-19-2014
i have a w116 450 6.9LSD differential on a w115 with a om617 turbo in it, swaped yokes.
a 2.47 w126gen1 LSD differential on a w123 with an om606. worked good, except the extra torque on the gearbox killed it. probably aiming for a 2.82 or 3.07LSD and a sixspeed 530d gearbox.
neither of them are wider than the stock 3.46 rearend, and no there wasnt any problem at al.
althou if you are doing it correctly you should change the (whatever its called) part that compresses, and tighten the nut of the yoke till you get the correct "feel"
but yeah, the last one we did by hand and without changing that and it worked great (so far)
RE: Any 2:47 or 2:47 LSD Actual Experience - Greazzer - 01-19-2014
So, the verdit looks like a w116 6.9LSD 2:47 differential or a 2.47 from a w126 gen1 LSD differential as a direct drop in replacement for a W123 excluding the shim issues which should be pretty simple and changing out the yokes which is likewise pretty simple.
Anything else (excluding changing the seals and general maintenance stuff) ? I saw somewhere that you have to change the back plate so it will fit (a plate with fins ?)
Thanks again in advance.
RE: Any 2:47 or 2:47 LSD Actual Experience - swampmonkey - 01-20-2014
(01-19-2014, 10:22 PM)Greazzer So, the verdit looks like a w116 6.9LSD 2:47 differential or a 2.47 from a w126 gen1 LSD differential as a direct drop in replacement for a W123 excluding the shim issues which should be pretty simple and changing out the yokes which is likewise pretty simple.
Anything else (excluding changing the seals and general maintenance stuff) ? I saw somewhere that you have to change the back plate so it will fit (a plate with fins ?)
Thanks again in advance.
a 450SE 6.9 isnt 2.47 but 2.65LSD, but other than that you are correct, no need to change backplate, althou you need to turn the back "fastener" 180 degrees around
![[Image: G1_96_N5_3.jpg]](http://www.german-spob.de/bilder/EBAYBILDER/G1_96_N5_3.jpg)
you see the part at the back? how it isnt symetrical?
a w115 and w116 has it "leaning inwards the differentail" whilst a w123 has it as shown in the picture, leaning outwards from the differential, easy to change, two bolts and 30 seconds later and you are done.
other than that and the yoke, it is a direct fit..
there is a few tools that makes changing the differential much easier, i can post a picture later, but basicly it is just a longer 19mm socket than usual that enables you to loosen the differential from the back instead of the tight front, saves a lot of time.
RE: Any 2:47 or 2:47 LSD Actual Experience - Greazzer - 01-20-2014
Yes, please do. Post away ...
More pictures the better.Other than the 2 seals, one on each side for the half axles, fresh gear oil, and a good cleaning inside and out, are there any other maintenance items? A lot easier to do everything on the bench than under the car.
Once we start getting consistent 50F weather, which is about 2-3 weeks away, I am going to hit the yards to find me one. Today it's supposed to hit 65F, but I am determined to see most of my floor in my garage. LOL.
RE: Any 2:47 or 2:47 LSD Actual Experience - swampmonkey - 01-20-2014
(01-20-2014, 09:28 AM)Greazzer Yes, please do. Post away ...
Other than the 2 seals, one on each side for the half axles, fresh gear oil, and a good cleaning inside and out, are there any other maintenance items? A lot easier to do everything on the bench than under the car.
http://mbturbo.com/how-to-change-final-drive-w123/
how to change on a w123.. isch...
the "tool" highjacked into this thread, basic socket+socketwrench, but it shure saved me time to have that longer type of socket.
![[Image: tools-rearend-500x282.jpg]](http://media.mbturbo.com/2014/01/tools-rearend.jpg)
![[Image: MG_6904-500x333.jpg]](http://media.mbturbo.com/2014/01/MG_6904.jpg)
-----------
the parts i bought was, and if you are changing the "spacer bushing" you need to change the front sealring to. (you can go without changing the spacer bushing and i acctualy skipped that part on the 2.47 LSD, but did it on my 2.65 LSD....
A 025 997 00 47 x1 seal ring
A 020 997 25 47 x2 seal ring
A 108 353 00 42 x1 Spacer bushing (thats the one you "need" to change when changing yoke)
![[Image: parts-rearend-1-150x150.jpg]](http://media.mbturbo.com/2014/01/parts-rearend-1.jpg)
----------
put some pictures of the dissambly of a 2.88 rearend as a kind of guide. if that helps, but you will probably not have the same type of sealrings on a 2.88 as a 2.47..
http://mbturbo.com/overhauling-a-differential/
![[Image: MG_6335-500x333.jpg]](http://media.mbturbo.com/2014/01/MG_6335.jpg)
a 2.47LSD differential
edit: to properly tighten the spacer bushing you have to dissemle the entire differential, getting the "differential" loose so you can feel any play in the "front" bearing... i gave it a try to just remove yoke, place a smaller and retighten, it is so far silent, but acording to the "masters" thats a risky buisness.. you -might- succed, but no promises...
i know of people that measure the torque that the yoke is tightened with, and then retighten it just a tad more, and have been "somewhat" successful...
RE: Any 2:47 or 2:47 LSD Actual Experience - DeliveryValve - 01-20-2014
Hey Mark, a 1st gen w126 2.47 LSD or a 6.9 2.65 LSD find would be really lucky for you. Most likely you come across a 2nd gen w126 2.47 first or maybe a 1st Gen w126 2.24 than any of those.
Other options for yard finds..
If you happen to stike out and only find 2nd gen stuff, and if you are willing, you can remove the LSD carrier from a 2nd gen and install it in a 1st gen w126 open diff case.
Also, if you run across a w124 4matic with ASR or a w201 16v LSD at yards, you can swap the clutched carrier into your 3.07 or 2.88 w123 case.
.
RE: Any 2:47 or 2:47 LSD Actual Experience - Greazzer - 01-20-2014
Hi Richard,
Are they that rare of a find ? I had some great luck last year finding scores of W115s and W116s, aluminum hoods, et cet. But then again, that stuff sold overnight so that got me thinking that luck is just luck. I will keep an eye out for other options and that tag on the driver's side which suggests LSD gearing clutch packs. It's already 60F and our real first sunny day since forever ... but it's too late to hit Augusta or Atlanta. That is a leave at 6AM and make it a day journey. poop ...
RE: Any 2:47 or 2:47 LSD Actual Experience - DeliveryValve - 01-20-2014
Definitely! You don't run across those LSD's that fit a w123 that often. Even if you find the more available 2.24 ratio, it will not work well with a 617.
RE: Any 2:47 or 2:47 LSD Actual Experience - swampmonkey - 01-20-2014
good information about the posibility to transfer to another open-diff w126 center (got a 2.47 LSD gen2 laying around to)
either way, running a fivespeed om617 with a 2.47 is in my opinion a tad to low, especialy if you are going with that fivespeed 717.400 Greazzer...
have a w123 coupe with om602 turbo and a 2.88, and that is perfect, slightly dialed up pump.
and a w123 with om602 turbo and 7.5mm dieselmeken and 3.07 rearend, and that one is smooth as hell to.. doesnt need an extra gear on none of those 2000/2100rpm in 60mph is great.
the w126 with om605 turbo (stock isch) runs great with a 2.47 (LSD i think) but it shure uses that low-end torque, and 1600rpm in 60mph is smooth as hell, but to pass another car one downshifts to third gear. a 2.47 is heavy to pull with a manual fivespeed and nothing id recomend for other uses than highway cruicing, the fifth gear is almost never needed/wanted, althou i got so used to the low rpm i tried to find a sixth gear one time
RE: Any 2:47 or 2:47 LSD Actual Experience - Greazzer - 01-20-2014
I got the venerable Getrag 717.400 five speed and my current DD (still in the paint shop) has a very peppy NA 617, and I am thinking its "peppy" because I got rid of a lot of parasitic drag off the engine, eg, Manual Steering Box, et cet. I really don't have much to play with at 88ish HP. Now, whenever I get my Turbo engine done, I am thinking the current 3:XX whatever I got, will be replaced with at least a 2:88. Since I know where a few 2:88s are lurking, I can grap one of those and install and see how I like the different gearing. If it turns out OK, then I can debate and hunt for the 2:47, since the jump to a 2:47 from 2:88 might be the zinger or might be too slugish as folks predict. I am thinking I will be OK with a little slower off the line speed, but I was hoping to do the ultra cruise at 75 mph on the highway and getting rid of 300-400 RPMs with the lowered gear differential.
RE: Any 2:47 or 2:47 LSD Actual Experience - swampmonkey - 01-20-2014
http://mbturbo.com/car/w126-sec-om605-turbo/
that w126 has around 140hp, so it might be what you are getting from a om617 with 6mm elements. ´
2.47 and fivespeed.
75km/h on speedometer = 100km/h in real speed, 60mph... althou the om605 perhaps is a tad evil to compare to a om617, but it has realy low rpms, and to cruice around at 60mph is no problem...
a om617na w123 will do a 2.88 rearend without a problem if it is a fourspeed for shure! my w115 72torn, realy torn engine has a 3.07 and almost keeps up with a w116 3.07 om617NA automatic 88hp, both being sluggish, but heck, they are heavy and slow to start with.
http://www.youtube.com/watch?v=ZHSqgpQUTdc
240d accelerating/keeping the speed up, 3.07 and speedometer being around 10km/h to low compared to real speed, topspeed = 140km/h.
but the engine is realy freaking torn.
RE: Any 2:47 or 2:47 LSD Actual Experience - MFSuper90 - 01-28-2014
My 617 dynoed 124hp with a hx30 at 18psi, turned up IP, and water to air cooler. So I'd say 140hp with 6mm element a is definitely doable.
RE: Any 2:47 or 2:47 LSD Actual Experience - Greazzer - 01-30-2014
OK,
So, just to confirm:
A 1979 450 SEL 6.9 with a 2:65 LSD is a direct, drop in replacement for the W123?
OR
A 1972 W116 6.9 with 2:65 Diff with the Clutch Pack is a direct drop in replacement for the W123 ?
Please let me know
RE: Any 2:47 or 2:47 LSD Actual Experience - Jooseppi Luna - 01-30-2014
(01-30-2014, 11:11 AM)Greazzer OK,
So, just to confirm:
A 1979 450 SEL 6.9 with a 2:65 LSD is a direct, drop in replacement for the W123?
OR
A 1972 W116 6.9 with 2:65 Diff with the Clutch Pack is a direct drop in replacement for the W123 ?
Please let me know
The second vehicle you listed does not exist. All W116 diffs are compatible with W123s.
Here's a link with plenty of pictures of the 2.65.
RE: Any 2:47 or 2:47 LSD Actual Experience - Greazzer - 01-30-2014
My bad ... a typo of sorts. Here's the range ...
"The high-performance 450SEL 6.9 version of the S-Class was built on its own assembly line by Daimler-Benz in Stuttgart, Germany and based on the long-wheelbase version of the W116 chassis. The model was generally referred to in the company's literature as the "6.9", to separate it from the regular 450SEL.
The 6.9 was first shown to the motoring press at the Geneva Auto Show in 1974, and produced between 1975 and 1981 in extremely limited numbers. It was billed as the flagship of the Mercedes-Benz car line, and the successor to Mercedes-Benz's original high-performance sedan, the 300SEL 6.3. The 6.9 also has the distinction of being among the first vehicles ever produced with optional electronically controlled anti-lock brakes, first introduced by Mercedes-Benz and Bosch in 1978. The 6.9's successor — the top of range 500 SEL — continued the 6.9's remarkable self-leveling hydropneumatic suspension as an extra-cost option."
I was off by a few years ... lol
RE: Any 2:47 or 2:47 LSD Actual Experience - DeliveryValve - 01-30-2014
Yes it will fit, with an input flange change out. Just make sure if you are not picking up the diff directly, that the seller verifies that it indeed has clutches. There is a possibility at one point of the car's life the diff was changed out to an open diff.
Also regarding axles, you can use the stock axles, but they will be a tad long. The best bet, would be to install R107 with a 1.3 liter diff (2.47, 2.65, ratio) axles. They will have the correct length.
RE: Any 2:47 or 2:47 LSD Actual Experience - sassparilla_kid - 01-30-2014
(01-20-2014, 02:57 PM)swampmonkey http://mbturbo.com/car/w126-sec-om605-turbo/
that w126 has around 140hp, so it might be what you are getting from a om617 with 6mm elements. ´
2.47 and fivespeed.
75km/h on speedometer = 100km/h in real speed, 60mph... althou the om605 perhaps is a tad evil to compare to a om617, but it has realy low rpms, and to cruice around at 60mph is no problem...
a om617na w123 will do a 2.88 rearend without a problem if it is a fourspeed for shure! my w115 72torn, realy torn engine has a 3.07 and almost keeps up with a w116 3.07 om617NA automatic 88hp, both being sluggish, but heck, they are heavy and slow to start with.
http://www.youtube.com/watch?v=ZHSqgpQUTdc
240d accelerating/keeping the speed up, 3.07 and speedometer being around 10km/h to low compared to real speed, topspeed = 140km/h.
but the engine is realy freaking torn.
Swampmonkey, do you think you could start a thread about your w115 with turbo 617? I'm curious what you did to relocate the oil filter and stuff like that? I looked at your website but I couldn't really tell too much from the pictures
RE: Any 2:47 or 2:47 LSD Actual Experience - JustPassinThru - 01-30-2014
(01-30-2014, 11:11 AM)Greazzer OK,
So, just to confirm:
A 1979 450 SEL 6.9 with a 2:65 LSD is a direct, drop in replacement for the W123?
Please let me know
BioHazard was running a 6.9 2.65 LSD diff in his W123 300D, but he hasn't shown up here in awhile. He was living about 20 miles north of me, we PM'ed back and forth, but I never met him.
Give me a couple days to take care of other pressing business and do a little excavating and I'll photograph the 6.9 2.65 LSD diff which is lurking in my garage. If memory serves, the tang at top rear is shaped differently from the W123 diff, so you need to McGyver-up a custom support bracket solution. Put proper-length axles in, swap over the input flange from your W123, mount it, bolt-up the driveshaft using new bolts and blue Loctite of course, and you're done.
RE: Any 2:47 or 2:47 LSD Actual Experience - swampmonkey - 01-30-2014
The 2.65 worked great in a w126, and a 2.47LSD in a w123.
You need to change the flange, and use your old driveshafts, and rotate the "support" 180degrees
Nothing more
RE: Any 2:47 or 2:47 LSD Actual Experience - Jooseppi Luna - 01-30-2014
(01-20-2014, 12:49 PM)DeliveryValve If you happen to stike out and only find 2nd gen stuff, and if you are willing, you can remove the LSD carrier from a 2nd gen and install it in a 1st gen w126 open diff case.
Richard... question.
Can you swap ring gears between the 2.47 and 3.07 or 2.88? That would seem like the ideal solution.
Whatevs... found your answer in PP
DeliveryValve on PeachParts ...the 2.47 LSD carrier for a w126 only fits a 2.47 ring gear.
RE: Any 2:47 or 2:47 LSD Actual Experience - DeliveryValve - 01-30-2014
(01-30-2014, 06:44 PM)Jooseppi Luna(01-20-2014, 12:49 PM)DeliveryValve If you happen to stike out and only find 2nd gen stuff, and if you are willing, you can remove the LSD carrier from a 2nd gen and install it in a 1st gen w126 open diff case.
Richard... question.
Can you swap ring gears between the 2.47 and 3.07 or 2.88? That would seem like the ideal solution.
Whatevs... found your answer in PP
DeliveryValve on PeachParts ...the 2.47 LSD carrier for a w126 only fits a 2.47 ring gear.
The 2.47 LSD is a 210mm ring gear in a 1.3 Liter housing. The 3.07 and 2.88 is usually a 185mm ring gear in a 1.1 liter housing. But the 3.07 can also be had in a 210mm 1.3 liter housing found in w116 and maybe a r107. The issue now is the placement of the ring gear along the axis as the 2.47 and the 3.07 are placed differently.
There is a possibility you can swap a 2.47 carrier into a 210mm 3.07 by making a custom ring spacer to align the ring and pinion gear properly. This is theory, but I do think it will work.
.
RE: Any 2:47 or 2:47 LSD Actual Experience - JustPassinThru - 01-30-2014
(01-30-2014, 06:22 PM)swampmonkey ...You need to ...rotate the "support" 180degrees
Nothing more
Ah yes, now I remember--you're right, the trick is to just flip the support around 180 degrees. I bought my 6.9 diff about a year ago, had forgotten about this trick, and had not read very far above in this thread.
RE: Any 2:47 or 2:47 LSD Actual Experience - Jooseppi Luna - 01-30-2014
(01-30-2014, 08:29 PM)DeliveryValve The 2.47 LSD is a 210mm ring gear in a 1.3 Liter housing. The 3.07 and 2.88 is usually a 185mm ring gear in a 1.1 liter housing. But the 3.07 can also be had in a 210mm 1.3 liter housing found in w116 and maybe a r107. The issue now is the placement of the ring gear along the axis as the 2.47 and the 3.07 are placed differently.
There is a possibility you can swap a 2.47 carrier into a 210mm 3.07 by making a custom ring spacer to align the ring and pinion gear properly. This is theory, but I do think it will work.
Interesting. So to confirm, the 3.07 and 2.88 diffs found in the W123 and W126 would all be 1.1 L 185 mm diffs but the W116 would be a 1.3 L 210 mm 3.07 diff? There's a W116 300SD parts car located a little bit aways from here for $500... maybe I should look into that more...
Oh, two more questions:
1) At least the 300SDL and maybe the 350SD(L) came with a 2.88. Would this also be a 1.1 L?
2) Why you so smart? :p
Another edit: I see in the diff sticky answers to all my questions:
1) The 300SDL came with a 1.1 L 2.88. The 350 came with a 2.82 1.3 L
2) The 450SE came with a 3.06 or 3.07 rear. The 450SEL came with either the 3.06, 3.07, or 2.65. The 450SL© came with the 3.07 or 2.65.
3) All diesels with 3.07 and 2.88 gear ratios have 1.1 L diffs.
Mark, that 2.82 might work pretty well for you if you can find one... although then I suppose you would need to use the axles from that car too... and who knows if those would fit... yikes...
RE: Any 2:47 or 2:47 LSD Actual Experience - JustPassinThru - 01-31-2014
(01-19-2014, 06:59 PM)swampmonkey ...a 2.47 w126gen1 LSD differential on a w123 with an om606. worked good, except the extra torque on the gearbox killed it. probably aiming for a 2.82 or 3.07LSD and a sixspeed 530d gearbox...
Since I wanted an automatic so my wife could drive it, my plan was to use the 722.311 transmission out of a 1985 Euro-spec 500SE.
1985 Euro 500SE = 245 hp, vehicle weight 3500 pounds (Wikipedia says this engine's output is only 220, but the dealer import manifest said 245; other web sources say 242).
1977 Euro 6.9 = 286 hp, vehicle weight 5300 pounds.
My 1985 300D with larger IP elements, turned up to 95 cc/K = 200 hp, vehicle weight 3250 pounds.
So, I figured, this tranny+diff would easily handle the added power with no need to mix-'n'-match internal parts on the diff, nor build up the tranny. Starter is on the correct (right) side of the 722.311, but I never got as far as actually figuring out how to control shifting.
RE: Any 2:47 or 2:47 LSD Actual Experience - swampmonkey - 01-31-2014
(01-30-2014, 10:26 PM)Jooseppi Luna Richard... question.
Can you swap ring gears between the 2.47 and 3.07 or 2.88? That would seem like the ideal solution.
just out of curiosity, is the gen2 differentials so much easier to find, or why do you want to change the internals?
seeing that the earlier do fit straight away? can't say the gen2 are much easier to find over here in sweden atleast.
(the 1.1 liter housings seem strong enough to me, 3.69 welded survived a lot of hard driving with om606 530whp, and my 3.07 lives fine behind a om602 turbo 220whp fivespeed.
RE: Any 2:47 or 2:47 LSD Actual Experience - Jooseppi Luna - 01-31-2014
The 2.47 is the easiest-to-find LSD around here, but I think that gear ration will be too low for the car. My quest for the LSD was at first based in reason, since we live in snow country, but now it has become mostly an irrational obsession to figure out SOME cheap way to get a LSD.
RE: Any 2:47 or 2:47 LSD Actual Experience - JustPassinThru - 01-31-2014
I'm listing my 6.9 diff in the FS section, my "Selling everything" thread, for $500 with local pickup only. But, truth is, if someone were to offer me $1000 (***EDITED: make that $750***), shipped, I'm sure I could find the crate it was shipped to me in (actually, it's at my mom's house in Renton, I have camshafts et cetera in it which have probably rusted to scrap by now).
"One that got away" story: whilst I was looking for a 6.9 diff, I found one through a nationwide yard network, at a yard in south Texas, right on the Mexican border. Price: $60. I called the yard. Nobody there spoke anything but Spanish. One guy came to the phone and said, in heavily accented Spanglish, "It's just the pumpkin! No axles!" (actually, more like "Eats Joes de punkin! No assholes!") to which I replied, "I want to buy it. Can you ship it?" and he hung up on me.
Biohazard was very satisfied with his 6.9 diff.
RE: Any 2:47 or 2:47 LSD Actual Experience - Greazzer - 01-31-2014
As for shipping, you can easily and safely ship in a 5 gallon bucket and lid. Being a dumpster diver, you can get "free" high density foam in most dumpsters by stores, and pack the bottom, sides, and top. Get the real lid for the bucket and not the cheapy, thin deal from Loews or Home Depot and you can wrap a ton of duck tape around it and the lid, and it will ship fine. Shipping is about $40 bucks from S.C. to the midwest. Add another $20 to zones 8 and 9. Just an FYI. I have shipped a number of 2.88 diff this way and never an issue. Plus, you got a nice handle to tote it around.
Getting close to the target: a 1979 450 SEL 6.9 -- just need to confirm that it has the 2:65 LSD?
Thanks again for the info.
RE: Any 2:47 or 2:47 LSD Actual Experience - swampmonkey - 01-31-2014
(01-31-2014, 12:58 PM)Greazzer Getting close to the target: a 1979 450 SEL 6.9 -- just need to confirm that it has the 2:65 LSD?
Thanks again for the info.
should be a 2.65LSD
the 6.9 never had anything else unless someone has already swapped it had some luck when i bought mine, paid like 350USD including shipping
you still have to change the spacer-washer when changing flange (or buy a lottery ticket and retighten the old
)
RE: Any 2:47 or 2:47 LSD Actual Experience - Greazzer - 01-31-2014
Swampmonkey or DeliveryValve, or whomever ...
What do you mean by spacer-washer ? Also, I saw on Benzworldo dot org where someone did the swap, and indicated there was an issue with shims ? What the heck are they talking about.
Also, Richard indicated that the W123 half axles are too long. Does that really matter ?
RE: Any 2:47 or 2:47 LSD Actual Experience - swampmonkey - 01-31-2014
(01-31-2014, 03:03 PM)Greazzer Swampmonkey or DeliveryValve, or whomever ...
What do you mean by spacer-washer ? Also, I saw on Benzworldo dot org where someone did the swap, and indicated there was an issue with shims ? What the heck are they talking about.
Also, Richard indicated that the W123 half axles are too long. Does that really matter ?
shims, those shims that sits at the half-axels/driveshafts on the side that goes into the differential, some of them can be 0.3mm and some 2.5mm thick, with a new diff it might not be possible to use your old, they are either to thin, or to thick, if you have a couple of spare driveshafts/differentials and a way to get a couple of different sizes you can probably get it going anyway, the same problem you have when shifting a w123 diff for another w123 diff...
w123 half-axels shouldnt be to long, that is NOT a problem, nevermind that. the larger differential aswell as the smaller have the same width regarding half-shaft wise.
spacer-washer, i meant spacer bushing..
http://media.mbturbo.com/2014/01/parts-rearend-1.jpg
that one. sits inside the seal-ring at the front, so you need to change that to, (holds the small gear in the diff chrown whatever)
you do that when you change the flange, or you can go without doing it.
but that is kindof risky.
RE: Any 2:47 or 2:47 LSD Actual Experience - Greazzer - 01-31-2014
OK, got it.
Well, waiting on confirmation from the seller right now to make sure it's a 2:65 LSD, has the ID tag, et cet., and some pictures. Actually, I am buying an entire 6.9 (M100) 450SEL 1979 if everything falls into place.
RE: Any 2:47 or 2:47 LSD Actual Experience - swampmonkey - 01-31-2014
(01-31-2014, 04:51 PM)Greazzer OK, got it.
Well, waiting on confirmation from the seller right now to make sure it's a 2:65 LSD, has the ID tag, et cet., and some pictures. Actually, I am buying an entire 6.9 (M100) 450SEL 1979 if everything falls into place.
if you are parting out parts, i know of guys that probably would be interested
and supply me with an email and il email you a partslist aswell as a blueprint/whatever it is called of the differential. (over pm)
il try and upload it later on online.
RE: Any 2:47 or 2:47 LSD Actual Experience - JustPassinThru - 01-31-2014
(01-31-2014, 12:58 PM)Greazzer As for shipping, you can easily and safely ship in a 5 gallon bucket...
I wouldn't dare risk damaging it by shipping it in a bucket. The only way I'd ship it would be in a well-cushioned wooden crate, on an Old Dominion Freight Lines truck. But I suppose you're right, $500 for the packing and shipping is a little high. Make the price $750 then.
Photos, Post # 37 of my "Selling everything" thread. Note the 2.65 stamp and SP which stands for ...um, "Sperröl" I think. Special oil for limited slip differentials.
Looks like you'll get yours delivered though in a complete 6.9. Congratulations!
@swampmonkey: I'd like to have that diagram too! ***update: THANK YOU for the diagram!***
RE: Any 2:47 or 2:47 LSD Actual Experience - Greazzer - 01-31-2014
A 5 gallon bucket with lid is almost crush proof. In any event, that is what I did and they made it safe and sound. I will post some pictures of my LSD candidate tomorrow hopefully.
RE: Any 2:47 or 2:47 LSD Actual Experience - JustPassinThru - 01-31-2014
(01-31-2014, 07:42 PM)Greazzer A 5 gallon bucket with lid is almost crush proof. In any event, that is what I did and they made it safe and sound.
Even though it would probably arrive safe and sound, I still wouldn't ship a priceless diamond in an egg carton. This badboy weighs more than 100 pounds.
RE: Any 2:47 or 2:47 LSD Actual Experience - Greazzer - 01-31-2014
Wowza ... a 2:88 is no where near that. That is double a 2:88. Maybe a bucket wouldnt work for the LSD flavor then.
RE: Any 2:47 or 2:47 LSD Actual Experience - JustPassinThru - 01-31-2014
No, I don't think a bucket would work. But thanks for giving me the best laugh I've had all week
RE: Any 2:47 or 2:47 LSD Actual Experience - DeliveryValve - 02-01-2014
(01-31-2014, 03:03 PM)Greazzer ...
Also, Richard indicated that the W123 half axles are too long. Does that really matter ?
It probably doesn't matter because several have had success using the stock axles.
But my reasoning comes from w116 and w126 experiences. They both have about a 1 inch shorter length for the 1.3L axles compared to the 1.1L axles. I would think the added length would have some long term irregular wear in the joint. But then again, nobody has never reported anything.
(01-31-2014, 07:42 PM)Greazzer A 5 gallon bucket with lid is almost crush proof. In any event, that is what I did and they made it safe and sound. ...
I tried shipping a diff in a bucket and that was a waste of time. I got turned away both from FedEx and USPS. One said it was unstable to stand alone in a moving trailer. They rather have flat sides on the shipping container. So I just boxed it up and all was well.
RE: Any 2:47 or 2:47 LSD Actual Experience - swampmonkey - 02-01-2014
(02-01-2014, 11:35 AM)DeliveryValve(01-31-2014, 03:03 PM)Greazzer ...
Also, Richard indicated that the W123 half axles are too long. Does that really matter ?
It probably doesn't matter because several have had success using the stock axles.
But my reasoning comes from w116 and w126 experiences. They both have about a 1 inch shorter length for the 1.3L axles compared to the 1.1L axles. I would think the added length would have some long term irregular wear in the joint. But then again, nobody has never reported anything.
(01-31-2014, 07:42 PM)Greazzer A 5 gallon bucket with lid is almost crush proof. In any event, that is what I did and they made it safe and sound. ...
I tried shipping a diff in a bucket and that was a waste of time. I got turned away both from FedEx and USPS. One said it was unstable to stand alone in a moving trailer. They rather have flat sides on the shipping container. So I just boxed it up and all was well.
hmm, good point, but the same difference could possibly be accuired when lowering or getting higher springs at the back to...
i have measured, and can measure again the with of the rearend, and i was pretty shure they had the exact same with, 3.69 w115 and 2.65LSD wisch was what i shifted back then, either way, can check again, but i dont think the width are different.
(dont have the w115 equiped with the 2.65 at home right now, but can measure both a 2.47 gen2, gen 1 and a regular 3.46 w123 diff)
RE: Any 2:47 or 2:47 LSD Actual Experience - Greazzer - 02-02-2014
Here is a picture of the differential. What is that canister on the side of the differential ? Got a pic of the VIN plate too. Can anything be told from the VIN ?
Getting close maybe ...
RE: Any 2:47 or 2:47 LSD Actual Experience - Druk - 02-02-2014
Can is plenum chamber for fuel dropping down from tank. Nothing to do with diff.
This is a screenshot of the relevant page from the EPC. 1:2.65 diff. Doesn't reproduce very well.
![[Image: vin_zps3a03d269.jpg]](http://s62.photobucket.com/user/a10ruk/media/vin_zps3a03d269.jpg.html)
Also doing a vin decode shows up nothing untoward.
RE: Any 2:47 or 2:47 LSD Actual Experience - Greazzer - 02-02-2014
I tried a number of sites plugging in the following VIN, and nothing ? Says it's not valid ?
11603612006862
RE: Any 2:47 or 2:47 LSD Actual Experience - Druk - 02-02-2014
(02-02-2014, 02:13 PM)Greazzer I tried a number of sites plugging in the following VIN, and nothing ? Says it's not valid ?
11603612006862
That's the vin I used above^ in the Merc EPC to get the info I posted. Although it's faint, if you look in the box top left in the pic it's your vin that's there. It works fine in the official site. What else do you need to know? (although it doesn't give a lot). Sent you a PM.