W126 short body OM606
W126 short body OM606
awsrock,
Glad to hear there is somebody else out there building W126s.
I'm interested to see how the 2.47 runs with the OD transmission. The extra power with that diff will probably be fine, I'm not drag racing this one. I've had a 380SE 2.47 in the om617 83 W126 since around 2002 and it is a whole different car. Given that the car usually started in second and was essentially a 3 speed most of the time the 2.47 made it a excellent highway cruiser, and the shift points make the approximate speed ranges 1st ~20mph | 2nd~ 40mph | 3rd~60mph | 4th~have hit 120+. This actually improved the mountain driving too, most of this car's life has been DD at 5000-9600ft above sea level running mountain roads, it really doesn't do too bad for a 100hp car.
The 350SD 2.82 diff is the same case size as the 2.47, so I will probably keep that if the gearing is wrong for that 722.6. I also have a 2.88 small case diff from a 87SDL in case I need to go even higher, but will lose LSD in that case. I am kicking myself for letting a 350SD diff and driveshaft slip through the junkyard a couple years ago, I never anticipated actually owning one of these. They use a 3 piece driveshaft rather than the 2 piece. I have an extra SDL 2 piece if you need one of those.
The intercooler does have plenty of room, I am probably going to go with 28x12x3 or 3.5. What width did you use? I also found one that flows 7 or 800 cfm that will fit completely in the lower part of the bumper, but I'd rather have excess capacity due to the long uphill pulls this engine will see. I need to make a cardboard version for test fit before I order.
Here are W126 ratios in case anybody wants them:
w126
1st Generation w126
Years,Model, Engine, Differential Ratio, Differential Case Size
1981-1984, 300 SD, OM617.951 3.0L I5, 3.07,
1985, 300 SD, OM617.951 3.0L I5, 2.88, 1.1 Liter (California from 10.1984 in California: 2.88, 1.1 Lite
1984-1985, 380 SE+SEL, M116.963 3.8L V8, 3.27, from 1981-10, 2.47, 1.3 Liter
1982-1983, 380 SEC, M116.963 3.8L V8, 2.47, 1.3 Liter
1984-1985, 500 SE+SEL, M117.963 5.0L V8, 2.82, from 1981-10, 2.24, 1.3 Liter
1984-1985, 500 SEC, M117.963 5.0L V8, 2.24/2.24 LSD (2.47?) 1.3 Liter
2nd Generation w126
Years, Model, Engine, Differential Ratio, Differential Case Size
1989-1991, 300 SE, M103.981 3.0L I6, 3.46 1 Liter
1988-1991, 300 SEL, M103.981 3.0L I6, 3.46, 1 Liter
1986-1987, 300 SDL, OM603.961 3.0L I6, 2.88, 1.1 Liter
1991, 350 SD, OM603.97 3.5L I6, 2.82, 1.3 Liter
1990-1991, 350 SDL, OM603.97 3.5L I6, 2.82, 1.3 Liter
1986-1991, 420 SEL, M116.965 4.2L V8, 2.47, 1.3 Liter
1986-1991, 560 SEL, M117.968 5.6L V8, 2.47 ASR/2.47, 1.3 Liter
1986-1991, 560 SEC, M117.968 5.6L V8, 2.47 ASR/2.47 LSD/2.47, 1.3 Liter
Thank you Sotvisp.
awsrock,
Glad to hear there is somebody else out there building W126s.
I'm interested to see how the 2.47 runs with the OD transmission. The extra power with that diff will probably be fine, I'm not drag racing this one. I've had a 380SE 2.47 in the om617 83 W126 since around 2002 and it is a whole different car. Given that the car usually started in second and was essentially a 3 speed most of the time the 2.47 made it a excellent highway cruiser, and the shift points make the approximate speed ranges 1st ~20mph | 2nd~ 40mph | 3rd~60mph | 4th~have hit 120+. This actually improved the mountain driving too, most of this car's life has been DD at 5000-9600ft above sea level running mountain roads, it really doesn't do too bad for a 100hp car.
The 350SD 2.82 diff is the same case size as the 2.47, so I will probably keep that if the gearing is wrong for that 722.6. I also have a 2.88 small case diff from a 87SDL in case I need to go even higher, but will lose LSD in that case. I am kicking myself for letting a 350SD diff and driveshaft slip through the junkyard a couple years ago, I never anticipated actually owning one of these. They use a 3 piece driveshaft rather than the 2 piece. I have an extra SDL 2 piece if you need one of those.
The intercooler does have plenty of room, I am probably going to go with 28x12x3 or 3.5. What width did you use? I also found one that flows 7 or 800 cfm that will fit completely in the lower part of the bumper, but I'd rather have excess capacity due to the long uphill pulls this engine will see. I need to make a cardboard version for test fit before I order.
Here are W126 ratios in case anybody wants them:
w126
1st Generation w126
Years,Model, Engine, Differential Ratio, Differential Case Size
1981-1984, 300 SD, OM617.951 3.0L I5, 3.07,
1985, 300 SD, OM617.951 3.0L I5, 2.88, 1.1 Liter (California from 10.1984 in California: 2.88, 1.1 Lite
1984-1985, 380 SE+SEL, M116.963 3.8L V8, 3.27, from 1981-10, 2.47, 1.3 Liter
1982-1983, 380 SEC, M116.963 3.8L V8, 2.47, 1.3 Liter
1984-1985, 500 SE+SEL, M117.963 5.0L V8, 2.82, from 1981-10, 2.24, 1.3 Liter
1984-1985, 500 SEC, M117.963 5.0L V8, 2.24/2.24 LSD (2.47?) 1.3 Liter
2nd Generation w126
Years, Model, Engine, Differential Ratio, Differential Case Size
1989-1991, 300 SE, M103.981 3.0L I6, 3.46 1 Liter
1988-1991, 300 SEL, M103.981 3.0L I6, 3.46, 1 Liter
1986-1987, 300 SDL, OM603.961 3.0L I6, 2.88, 1.1 Liter
1991, 350 SD, OM603.97 3.5L I6, 2.82, 1.3 Liter
1990-1991, 350 SDL, OM603.97 3.5L I6, 2.82, 1.3 Liter
1986-1991, 420 SEL, M116.965 4.2L V8, 2.47, 1.3 Liter
1986-1991, 560 SEL, M117.968 5.6L V8, 2.47 ASR/2.47, 1.3 Liter
1986-1991, 560 SEC, M117.968 5.6L V8, 2.47 ASR/2.47 LSD/2.47, 1.3 Liter
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