swapped a 3.47 into my 115 240D with a 3.96

[mabbonizio]

And I would highly recommend it!

Couldn't seem to figure out why my 115 240d stick felt like such a dog compared to my 82 240D auto..

I was under the car servicing it and realized the W115s had an even higher rear end ratio than the W123s

So I swapped in a 3.47 from a 123 300d and find it to make for a much better drive!

1st gear gets you to about 15mph where it feels "right" to shift into second and is much more usable.

I used a online rpm calculator and if its correct it looks like it would have dropped my 65mph engine rpm to 2970

Previously the engine rpm at 65mph would have been 3389

@ 70 mph 3198rpm vs 3650rpm

Most noticeable is that the engine isn't screaming so loudly on the highway.

[Usaguy]

Originally Posted by mabbonizio

W115s had an even higher rear end ratio than the W123s

I think that w115 and w123 have almost the same axle ratios. people like to swap 3.07 from a pre 84 300 turbos



w115 240D: 3.69
w123 240D: 3.69


w115 300D n/a: 3.46
w123 300D n/a: 3.46


w115 220D: 3.92

[CDTurbo001]

What Christuna said.

[mabbonizio]

oops i guess i forgot to mention my 115 started life as a 220D, so the swap from 220D gearing to 300D gearing is quite a difference.

Not sure I'd want to go to a 3.07 as it is a little bit tougher taking off on steep hills.

cruising on the highway is greatly improved.

[vwnate1]

? I ass-U-me this is a stick shift car ? .

[GregMN]

Originally Posted by vwnate1

? I ass-U-me this is a stick shift car ? .

Originally Posted by mabbonizio

Couldn't seem to figure out why my 115 240d stick...

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