I've been looking for a crank for my 74 240D and though I've spoken with a few places I have yet to find one. A 83 240D just pulled into the Junkyard down the street but I'm not sure if the cranks will transfer between the two years.

I wanted to know the differences between the years of engines and if I would be able to transfer cranks between the two years.

I recently picked up my 240D at the junkyard and it had rod knock. I pulled the engine and the crank was grooved fairly badly on the #2, and I don't know it's past, but it has already been oversized 1.00mm. I thought about buying the very rare, very expensive oversized bearings for it, but it is just going to be a problem again soon so I've decided to replace it.

I would have replaced the engine long ago, but this is my first Mercedes and it is being used for my learning curve, as I'm in love with the cars and I know I will be owning another one in the future, and I want to know all I can. So I figured tearing it all the way down would be a good way to do it. Also the engine seems to be in great shape besides the bearing problems as it started up without glowplugs right off the bat and after sitting for who knows how long.

If someone out there could give me their knowledge on this issue, and or where I can pick up a crank that is already out of a 240D it would be greatly appreciated.

I knew someone out there would know. That is going to make it a little harder to find one, but I know they are out there.

Do you know what year the engines changed? Was it the same year they changed from the W115 to the W123?

Thank you

Thats not what we want to hear!

We'll have to get an air compressor up there to pull stuff off the engine if you find a crank. The only thing I wonder about is the front pully bolt...I think the rears can be taken off with a big breaker bar.

Just make sure you keep those rod caps with their associated rods and do NOT mix up main caps, etc.

Makes putting things back together a lot easier