Use the Russian EPC site to cross reference part numbers. This will at least give you an idea if parts will fit or not. My guess is that the W123 pedal cluster will not fit just like Johnhef said. Hopefully the W126 sedan and coupe pedal assemblies are the same.

I recently read a post from a new member from Philly who has a W126 with a diesel and a manual tranny. He bought the car as is but could maybe shed some insight by taking some photos for you.

I know the 603 engine has it's drawbacks, but that is what I would be looking for too. The potential for greater horsepower is better with the 603 than the 617. You will have the slowest SEC in the US or maybe the world.

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Doug

1987 300TD x 3
2005 E320CDI

Yes there is a difference between the W123 and W126 brake pedal, but It will fit, in the W123 there are 4 bolts that bolt the pedals to the firewall, in a W126 there are the same 4 bolts but there is an additional support brace.

once I have the brake pedal pullled from the SEC on thursday night I will know for sure. Im betting that with little to no modifications it will fit perfectly, But if someone has actually tried this and found that it wont work please post, otherwise we will wait and see.

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1984 Euro 300SDC, (4spd standard)
1986 Toyota Landcruiser Diesel HJ60 5spd X2

Gone but not forgotten (some sold, some stripped)
1983 300 SD, 1985 300 SD, 1983 240D, 1986 300 SDL, 1985 300 SDL, 1983 300 D, 1984 300 D, 1985 300SD, 1987 300 SDL, 1983 300 SD, 1985 300 TD Euro, 1983 380SEC, 1990 300 D, 1987 300D, 1982 300D, 1982 300D, 1994 E420, 1987 300 TD, 1987 300 D, 1984 300 D

You can cal the speedo with a ratio box on the cable. That will correct both the speedo and the odo, not just the speedo like a new face would.

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Ron Schroeder
'85 300 Turbo Diesel 2 tank WVO
'83 300 Turbo Diesel 2 tank WVO
Some former WVO vehicles since ~1980:
'83 Mercedes 240D
'80 Audi 4000D
'83 ISUZU Pup
'70 SAAB 99 with Kubota diesel
'76 Honda Civic with Kubota diesel
'86 Golf
Several diesel generators
All with 2 tank WVO conversion
LI NY

this is such a great project. that 2.47 matched to the 4spd is going to be unreal..


can we please definitely start this in a new thread hitman..
would love to hear some performance possibilities of this but dont want to hijack this one.

i wouldnt use a 247 rear with the four speed.

taking off will be like taking off in second gear. you will be able to do it but will tire of it soon and your clutch wont last long.

i would recommend the 346 gear as in a 300d na.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

walgamuth is right.. used to the 2.47 with my automatic and forget the overall ratio differences between the manual..
think Krautmister just matched a 3.08 with a 4spd 617 and had very good results overall.. especially cruise.