W126 short body OM606
W126 short body OM606
The alternator pulley on the non overrun alternator can be swapped without issue. I used INA with reference 602-150-00-60.
![[Image: 20200422154432.jpg]](http://u.cubeupload.com/wschotty/20200422154432.jpg)
One thing is the difference in size, this changed my belt to a longer size. Right now I put on number 4060850 and it is working with no issue, but I may go one size smaller if it starts slipping.
![[Image: 20200422154530.jpg]](http://u.cubeupload.com/wschotty/20200422154530.jpg)
After some more tuning of the transmission and driving, I want much higher final gear. The stock LSD cooked the clutches already, so no concern about trying to preserve those carriers. Wavetrac makes a carrier that fits the 210mm differential, but the highest ratio for that is 3.06. I think this will be ok, I put a small case 2.88 from a 300SDL to see how it feels, this was the closest to 3.06 I had:
![[Image: 20200702104424.jpg]](http://u.cubeupload.com/wschotty/20200702104424.jpg)
Note the precision differential jig and contaminate free work zone.
At cruising in fifth, but not sure if the torque converter is locked or not here, more on that later:
![[Image: 20200723135500.jpg]](http://u.cubeupload.com/wschotty/20200723135500.jpg)
It appears there were 210mm 3.06 differentials in 70s SLs, and w124 300E/CEs at least. I pulled one from a '74 450SL, but I nicked the pinion with the torch trying to get the pinion nut off, so need to find another one. I'd also like to find a W126 case that has multiple sensors so I can use an external speed for the OLE controller. I think the ASR cars had more than one, but still need to research that. If not, maybe I can pull signal from the single ABS one, but want to keep stock ABS working with it. Controller is working ok with internal, but want best reliability on this car.
![[Image: 20200805133606.jpg]](http://u.cubeupload.com/wschotty/20200805133606.jpg)
Part numbers on that one were:
Pinion: 116 353 25 10 - 3.06
Ring: 116 353 25 12 -3.06
I changed the exhaust tip, I may also try to find a better 3" muffler instead of this w220 one, though it seems ok at 2 bar. I haven't turned up the boost yet, but this thing is small inside:
![[Image: 20200702133105.jpg]](http://u.cubeupload.com/wschotty/20200702133105.jpg)
![[Image: 20200818081653.jpg]](http://u.cubeupload.com/wschotty/20200818081653.jpg)
I like that it is quiet, I have 3" on the om642 and it had bad drone even with a huge straight through muffler. I ended up putting one of the w220 s55 resonators on the end of that one to stop the problem, not like it is flowing enough for that to restrict it. This one likely needs a real 3" resonator if I put a 3" muffler on there.
I had some saga with the transmission, I think the junk yard e320 torque converter was not a great idea. The temperature is way too hot, with spikes to 120c, and some strange issues with shifting and stalling the engine at stops. I found Florida Torque Converter builds better versions, they built one for me with 1800-1900 stall, triple clutches, and HD bearings:
![[Image: newtrq.jpg]](http://u.cubeupload.com/wschotty/newtrq.jpg)
![[Image: 20200805152701.jpg]](http://u.cubeupload.com/wschotty/20200805152701.jpg)
Now it is time to swap it out, I just hope the AMG transmission didn't get damaged or catch shrapnel from the bad converter:
![[Image: 20200807082523.jpg]](http://u.cubeupload.com/wschotty/20200807082523.jpg)
The stock flexdisks and 2 driveshaft carrier bearings look to be fine so far with some abuse.
For the fuel injectors, I ended up sending some cores to Erik at Dieselmeken for rebuild and balancing. Figured may as well just have the master himself do it instead of botching up another set trying to learn.
Now I just need to finish replacing the torque converter, swap the injectors, set timing back to 10 from 11, and start saving for a LSD carrier, CV axles, and muffler. For the differential I will likely need to find a shop who has the case spreader for these Mercedes diffs, hopefully somebody around here has one, as looking at the threads for those who have built their own seems like a large pain in the ass. I also have a Thermotop-C from another project that never got used, I am thinking about putting it on this car while I have it up on the ramps so I can start it in the winter without a smokeshow.
Well, some more time has passed, it is time for the latest updates on this one.
The alternator pulley on the non overrun alternator can be swapped without issue. I used INA with reference 602-150-00-60.
One thing is the difference in size, this changed my belt to a longer size. Right now I put on number 4060850 and it is working with no issue, but I may go one size smaller if it starts slipping.
After some more tuning of the transmission and driving, I want much higher final gear. The stock LSD cooked the clutches already, so no concern about trying to preserve those carriers. Wavetrac makes a carrier that fits the 210mm differential, but the highest ratio for that is 3.06. I think this will be ok, I put a small case 2.88 from a 300SDL to see how it feels, this was the closest to 3.06 I had:
Note the precision differential jig and contaminate free work zone.
At cruising in fifth, but not sure if the torque converter is locked or not here, more on that later:
It appears there were 210mm 3.06 differentials in 70s SLs, and w124 300E/CEs at least. I pulled one from a '74 450SL, but I nicked the pinion with the torch trying to get the pinion nut off, so need to find another one. I'd also like to find a W126 case that has multiple sensors so I can use an external speed for the OLE controller. I think the ASR cars had more than one, but still need to research that. If not, maybe I can pull signal from the single ABS one, but want to keep stock ABS working with it. Controller is working ok with internal, but want best reliability on this car.
Part numbers on that one were:
Pinion: 116 353 25 10 - 3.06
Ring: 116 353 25 12 -3.06
I changed the exhaust tip, I may also try to find a better 3" muffler instead of this w220 one, though it seems ok at 2 bar. I haven't turned up the boost yet, but this thing is small inside:
I like that it is quiet, I have 3" on the om642 and it had bad drone even with a huge straight through muffler. I ended up putting one of the w220 s55 resonators on the end of that one to stop the problem, not like it is flowing enough for that to restrict it. This one likely needs a real 3" resonator if I put a 3" muffler on there.
I had some saga with the transmission, I think the junk yard e320 torque converter was not a great idea. The temperature is way too hot, with spikes to 120c, and some strange issues with shifting and stalling the engine at stops. I found Florida Torque Converter builds better versions, they built one for me with 1800-1900 stall, triple clutches, and HD bearings:
Now it is time to swap it out, I just hope the AMG transmission didn't get damaged or catch shrapnel from the bad converter:
The stock flexdisks and 2 driveshaft carrier bearings look to be fine so far with some abuse.
For the fuel injectors, I ended up sending some cores to Erik at Dieselmeken for rebuild and balancing. Figured may as well just have the master himself do it instead of botching up another set trying to learn.
Now I just need to finish replacing the torque converter, swap the injectors, set timing back to 10 from 11, and start saving for a LSD carrier, CV axles, and muffler. For the differential I will likely need to find a shop who has the case spreader for these Mercedes diffs, hopefully somebody around here has one, as looking at the threads for those who have built their own seems like a large pain in the ass. I also have a Thermotop-C from another project that never got used, I am thinking about putting it on this car while I have it up on the ramps so I can start it in the winter without a smokeshow.
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