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+--- Thread: help broke something.!! (/showthread.php?tid=4689)
help broke something.!! - lgreeley83 - 06-27-2013
I tried a holeshot in the rain..... Now I can be rolling in or out of gear and the car will stop itself. Rolling and than clunk skid stop. Waiting for tow truck :-(
1985 300d 4 speed.
Motor doesn't stop just car.
RE: help broke something.!! - larsalan - 06-27-2013
haha
Sounds like the trans or diff then don't it? Maybe some broken gears in the diff? Drain the fluid and see what's up there first I'd say.
And what is a holeshot? flooring it? neutral drop? brake torque?
RE: help broke something.!! - lgreeley83 - 06-27-2013
My bad not universal language.
I tried reving it a bit more and letting the clutch out quickly. I didn't thinks I was toooooo hard on it.
Man! Shit!
RE: help broke something.!! - Torkey - 06-27-2013
Maybe the drive shaft was seeking freedom.
RE: help broke something.!! - lgreeley83 - 06-27-2013
I crawled under and visually stuff was OK. Its gotta be the dif or trans I think. My car isn't even that souped up yet. I'd figure the clutch would slip first or something. Ug.
Assuming its the differential what do I do to beef it up? Am I entering a dark expensive world of custom? I would have figured stuff would have held up better than that. I'm too early in the performance game to be breaking stuff. Ahhh I'm going for some beer.
RE: help broke something.!! - larsalan - 06-27-2013
I bet on smashed diff too. But who knows. They are 'easy' to swap out.
Is it home up on blocks yet? drain that diff and take the cover off
oh yea, beer first
RE: help broke something.!! - lgreeley83 - 06-27-2013
When I bought the car it had an extra dif in the trunk with an extra cluster. I assume the PO swapped difs when doing the manual trans swap. I threw the original cluster out today, I guess I dig out of the dumpster tonight. I have a 3. Something in the car now, the other dif is 2. Something.
I've got a Dieselmeken pump about to go in. Can any of the digs handle it?
RE: help broke something.!! - Greazzer - 06-27-2013
How long have you been home ... LOL. Everything is fixable and most things are easily fixable with some patience ... LOL
RE: help broke something.!! - lgreeley83 - 06-27-2013
Got it towed to a shop. (1st time minus alignment) I almost had it and should of had it towed home but my crappy landlord will fine me for working on my car. I get my work done in the public storage lot, here, there, and everywhere. Just wait until nightfall.
I'll let them open the dif and if its that swap myself.
RE: help broke something.!! - larsalan - 06-27-2013
prolly have in a 3.07 and the other is a 2.88. I much prefer the 2.88.
Swap that out if the axle gears are ok will take you like 5hr estimate.
There is a peachpart walkthrough on that, it's great.
But, we'll wait to see what initial investigations reveal.
And as you say match the cluster part # to the diff if possible, or fuck it, hahaha
RE: help broke something.!! - lgreeley83 - 06-27-2013
Haven't had the odometer working since I got it anyways lol. I need to get the right cable someday. Fingers crossed on diff.
Greazzer I'm surprised it took me this long to break something proper. I've never really tried to spin the wheels but with plenty of water on the road today was the day for me to try. I figured I'd break traction quicker than a trans or diff. Lol
RE: help broke something.!! - Simpler=Better - 06-28-2013
(06-27-2013, 08:56 PM)lgreeley83 Got it towed to a shop. (1st time minus alignment) I almost had it and should of had it towed home but my crappy landlord will fine me for working on my car. I get my work done in the public storage lot, here, there, and everywhere. Just wait until nightfall.
I'll let them open the dif and if its that swap myself.
That's really weird, I used to do brake stands and corner-sliding burnouts in the rain with my auto like it was my job.
Practically, just swap the diff it's not bad with a breaker bar. I did my axles in my driveway. Also, I feel your pain-we're not allowed to work on cars either. So I get to do all my work in the grocery store parking lot across the street.
I think you need to be a pioneer and be the first to convert a w123 to leaf springs using a Ford 8.8 with discs from a Crown Vic/ exploder/late ranger. They're like $200 complete on CL all day.
RE: help broke something.!! - lgreeley83 - 07-02-2013
she was good while she lasted.
RE: help broke something.!! - larsalan - 07-02-2013
you go faster with a 2.88 anyway
RE: help broke something.!! - lgreeley83 - 07-02-2013
Should help stretch out my 1st gear a tiny bit right? So little time in 1st.
RE: help broke something.!! - larsalan - 07-02-2013
yea, maybe there is other ways to tweak that. Fiddle with the bowden cable and that pressure modulator.
Maybe I'm wrong on that. I've messed with mine until I've got it the way I want it.
RE: help broke something.!! - lgreeley83 - 07-02-2013
I've got the manual...I just mean to say I'm in first gear for only about 1/2 second before maxing my revs. <- slightly exaggerated.
I am such a newb sometimes though. When I think about some of the superturbo full custom builds. Those guys are like "I welded a whole car together today" . and I'm all like "where does the headlight fluid go?"
I just need a damn garage and my first home
upgrade will be to install a lift.
RE: help broke something.!! - larsalan - 07-02-2013
oh yea yea manual haha I forgot. Well, 1st is supposed to be a granny gear just to get you moving anyway. But that 2.44 is a hell of a lot better than 3.07 at highway speeds.
Can't speak to the gearing of your trans but with 4speed auto/3.07/stock tire the motor is spinning pretty high at like 65-70mph
Now with a 2.88 and a 8% larger back tire I feel much better cruising over 70mph. Now if only my alignment was tight enough to cruise at 80+ hahaha
RE: help broke something.!! - lgreeley83 - 07-02-2013
I've got a feeling I need to stock up on these.
RE: help broke something.!! - Simpler=Better - 07-03-2013
If you break another, bust out the welder and some 1/4" plate
RE: help broke something.!! - lgreeley83 - 07-03-2013
The replacement has welded gears...any thoughts on that? Anybody got a spare?
RE: help broke something.!! - Simpler=Better - 07-03-2013
Run it with welded gears then! It will only be a problem on slow tight turns. You should learn to get the hang of it.
RE: help broke something.!! - lgreeley83 - 07-03-2013
I'm gonna keep that one in storage. I know the mechanic freaked out when he saw it. Old euro dude. I still have to look as he only told me over the phone. I think i'll be buying two more though. One to put in and keep the welded and another as a spare.
RE: help broke something.!! - DeliveryValve - 07-03-2013
So this is the reason for the WTB. I just saw this.
For some reason, 2.88's appear to not hold up as well as the 3.07, 3.46, and 3.69 brethren. Perhaps the taller gear is a bit too much for the 185mm ring gear 1.1 liter case. Maybe a 210mm ring gear 1.3 liter case is what you need for your soon to be increased power.
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RE: help broke something.!! - lgreeley83 - 07-03-2013
(07-03-2013, 09:08 PM)DeliveryValve So this is the reason for the WTB. I just saw this.
For some reason, 2.88's appear to not hold up as well as the 3.07, 3.46, and 3.69 brethren. Perhaps the taller gear is a bit too much for the 185mm ring gear 1.1 liter case. Maybe a 210mm ring gear 1.3 liter case is what you need for your soon to be increased power.
.
hmm. This was a 3.07 but I was a bastard to it. Realizing the extra diff was welded, and other tweeks on this car, I can only assume the PO was hard on it as well.
I don't do really any highway driving at all so maybe sticking with a 3.07 is better for me. If I ever do go on the highway i am usually meandering off of the main freeway with no rush anyhow.
Also don't want to forget the fear of my car falling apart at high speeds. LOL.
RE: help broke something.!! - DeliveryValve - 07-03-2013
Then you should be looking for a 210 mm 1.3 liter 3.06 found on w107 and w116 chassis. That should give you the strength you need.
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RE: help broke something.!! - lgreeley83 - 07-03-2013
Is that a direct bolt in swap?
I needs strength :-)
RE: help broke something.!! - DeliveryValve - 07-03-2013
(07-03-2013, 10:05 PM)lgreeley83 Is that a direct bolt in swap?
I needs strength :-)
You will need to swap out the input flange as the 3.06's flange is larger in diameter than the 3.07. ... Unless you make a custom driveshaft to accommodate the larger diameter flex disk.
Axles will be a tight fit, but many folks were sucessful in using the stock axles in a 210mm diff. If you get a diff out of a r107, you may want to take the axles also. They would be theoretically stronger.
.
Here is one on the 'bay.
http://www.ebay.com/itm/107-72-85-Mercedes-450-380-SL-SLC-Rear-DIFFERENTIAL-unit-ring-pinion-3-06-ratio-/150862538382?pt=Motors_Car_Truck_Parts_Accessories&hash=item23201ba68e&vxp=mtr#shId
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RE: help broke something.!! - lgreeley83 - 07-04-2013
Thanks dv.
RE: help broke something.!! - lgreeley83 - 07-08-2013
i figure i shall update. so i had an extra diff but the gears were welded and i don't want to drive like that. A side note. the housing was different. Here is a pic.
The one I was driving is on the right. Is that standard for the w123?
The one on the left did not have bolts where the axle joins dif. I saw one in a 126 at the junkyard today that looked more like the one on the left. I ask these questions because this was obviously someones project car before I bought it and don't know what is stock and whats not. Lol learning a lot about these freaking diffs right now.
Also here is a pic of the welded gears that I will not be using. Never seen welded gears before. It looks like a horrible hack job to me.
Also here is some info. I figure I shall connect the spider web of info for the future readers.
http://www.superturbodiesel.com/std/thread-2570.html
RE: help broke something.!! - larsalan - 07-09-2013
the left one is the only ones I've ever seen.
there is a long thread on these
http://www.superturbodiesel.com/std/thread-2570.html
And i see some pictures here of one with those bolts
http://www.superturbodiesel.com/images/benz/w123%20rear%20diff/Rolf%20002.jpg
RE: help broke something.!! - lgreeley83 - 07-09-2013
Damn sh%t f*ck.
Lol so I probably had something not w123 stock. Hmm.
Its odd to Google the diff and look at pics. Many with and without the bolts. My only real concern is my axle length to pair it up correctly.
RE: help broke something.!! - larsalan - 07-09-2013
myb that bolty one is stock. I have only ever seen 5 or 6 of them. I am really still new to all this myself
RE: help broke something.!! - lgreeley83 - 07-09-2013
As of now I think its stock. My hunt involves checking for one with bolts. Maybe 2 different editions with same gear different housing. Who knows.
It was an 82 126 I looked at today that didn't have bolts. Forgot to check the ratio.
RE: help broke something.!! - DiseaselWeasel - 07-09-2013
Bolts = early W123.
RE: help broke something.!! - Simpler=Better - 07-09-2013
(07-09-2013, 12:49 AM)lgreeley83 As of now I think its stock. My hunt involves checking for one with bolts. Maybe 2 different editions with same gear different housing. Who knows.
It was an 82 126 I looked at today that didn't have bolts. Forgot to check the ratio.
I have a 2.47 diff from another series merc (gas v8?) in storage back home that I paid a fortune for. I'll try to remember to dig it up when I'm there this weekend. The mounting was very different, but you may be able to swap the gears into your housing? Don't know, I'll get some part numbers (assuming my Dad didn't sell it for scrap)
RE: help broke something.!! - Druk - 07-09-2013
(07-09-2013, 08:28 AM)Simpler=Better I have a 2.47 diff from another series merc (gas v8?) in storage back home that I paid a fortune for. I'll try to remember to dig it up when I'm there this weekend. The mounting was very different, but you may be able to swap the gears into your housing? Don't know, I'll get some part numbers (assuming my Dad didn't sell it for scrap)
The 2.47 is from a 380 SEL W126. It's what I've fitted to my 107. However it is the large case diff and the drive flange is at a different height (lower) for a standard shaft. The bolt-on axle shaft flange type are from a later W123/W124 and the early diffs can be converted to suit these axleshafts by using a W124 plugin flange and 6bolt axleshafts from a late W123. Lots of bucks although it saves dropping the diff rear plate to change shafts.
On the left the 2.47 large case converted to bolt-on axleshafts. On the right a 3.54 small case plug-in shafts
![[Image: 24-6002.jpg]](http://s62.photobucket.com/user/a10ruk/media/24-6002.jpg.html)
Thanksgiving version....
![[Image: turkey.jpg]](http://s62.photobucket.com/user/a10ruk/media/turkey.jpg.html)
Sorry...couldn't resist.
![[Image: 27-6006.jpg]](http://s62.photobucket.com/user/a10ruk/media/300TD/27-6006.jpg.html)
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RE: help broke something.!! - Simpler=Better - 07-09-2013
That turkey made my day!
I think my diff is not the same as the one you have picture, but honestly I haven't seen it in like 2 years when I packed all my w123 stuff up.
RE: help broke something.!! - lgreeley83 - 07-09-2013
By the way I still need to buy one.
RE: help broke something.!! - DeliveryValve - 07-09-2013
The different case style does not matter in the way it fits in the car, it is all the same. As stated earlier, the case with the bolts are an earlier style and the one piece style is from the later years.
Evidently, the diff that was a pulled out from your car was a replacement diff as the original is the same case style in the left.
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RE: help broke something.!! - lgreeley83 - 07-09-2013
Lol i want in.
RE: help broke something.!! - ecFSE - 07-10-2013
Same thing happend to my brothers W123
2 times when dumping the clutch.
Diff housing with bolts was fitted to cars until january 81
RE: help broke something.!! - JB3 - 07-10-2013
(07-09-2013, 12:49 AM)lgreeley83 As of now I think its stock. My hunt involves checking for one with bolts. Maybe 2 different editions with same gear different housing. Who knows.
It was an 82 126 I looked at today that didn't have bolts. Forgot to check the ratio.
why only the ones with bolts?
They are functionally identical apart from gear ratios, both types of axles will work with both types of diffs. Ive swapped back and forth before personally.
Its nice how you can swap diffs from 114/115 to 123 to 126s. I love that feature.
I put a mid 80s 123 diff in my 74 240 replacing one that had an external bolt flange, and ive put an 85 126 2.88 diff in my 123, just capping off the ABS port.