Is it possible to bolt a 240D flywheel to a 300D motor to run the 240D's 4 speed? If it does bolt up would it need to be re-balanced for the 300D ? Thanks.

240D questions

I bolted up my 240d flywheel and trans to my 300d engine. That had a automatic attached to it.. they use the same aluminum adaptor plate too.
and is running fine...
I did change out the third member to the 300td diff... it was a 3.07 instead of a 3.73 or there abouts.
a touch slower off the line, but 20% lower rpm at freeway speed.. and it only took about 2 hrs. to do.

Did you have to do anything about the pilot bearing ? Like drill the end of the crank ? Thanks, Greg

Thanks for the info. I just want to match a 240D 4speed to a 300D motor to use in a ...well...other brand application so the axle ratio isn't important but interesting. I think the axle gears in my 77 240D is somewhere around 3.46(?) and the rig the 300 transplant will go in is 3.54 so all should be well in that area. Thanks again. Major concern was if I had to find a 300 specific flywheel in the US. Glad to hear a 240 wheel will work.

Did not do a thing to the crank for the pilot brng. Of the 300d crank.
the hole in the cranks are a match.. for the pilot brng.
and as a mechanic, I was taken aback by the careful seal the germans came up with!! an open bearing, covered up by a drilled freeze plug!
as usual, I will not argue with something that works. The manuals say to match up the flywheel to the orginal mounting. To maintain balance.
I did not do this.. and have cut down the shade tree that I assembled this engine under.
would be better to send the assembly out to check for balance. when you have the crank polished or reground.
I am running the unit in my daily driver. And have taken trips and hi-speed runs. I might have got lucky.

the gear ratio is stamped on the housing.
from the rear, lower left corner of the main housing. and will sure get rid of the singer sewing noise from the engine compartment.
How bout a 300d with auto into a triumph tr-6?

How bout a 300D/4spd in a CJ Jeep. That's the plan anyway...

OK, of those people who have changed out rear end ratios.... what if anything are you doing to get your speedometer to read your speed accurately ?

the speedo cable is geared to the 4 speed tranny.
I am going to pull out the gear setup, out of an automatic, and see if the drive gear will interchange. Might be that the designers have standardized this part....If not, I will pull out my GPS, and find out what the percentage it is off, and label it as such.
I now blast past 80 on the freeway, when needed!!
I am making lemonaid here, and not looking at the lemons...

Boat trash,

The 240D flywheel is about seven pounds l;ighter than the 300D flywheel. You can use it but your engine will idle rougher and may not last as long. All the flywheels have a small slot mark on them where they bolt up to the crank and the crank also has a slot mark. You should line up the slots to acheive the balance that's built into each part, it's not quite as good as having both components balanced together but it's till better than just taking a guess.

300D flywheels are very rare in this counry but the 115 300d flywheels are exactly the same and are much more comon.

Hope this helps. BTW, I assembled my 240D/300D G-wagen engined car and the mechanic who was supplying me with parts gave me a 110 flywheel for it. Well, what did I know? I finally got mad about the rough idle and started looking at the numbers on the flywheel. Finally found a 300D one and replaced the 110. However, I drove the car with the 110 in it for at least 18 months. The car used to acclerate a little better with the 110 flywheel which was nine pounds lighter.

Good luck.

Ben

I thank you for the heads up!!
Do you know of any good 115 300d flywheels?

I am pulling the trans anyway, to put in a new disk. And will change out the flywheel at that time.
Dan.

Thanks Ben, that was most helpful. I didn't figure a 240 wheel would work but knew a 300D flywheel would be next to impossible to find here so I figured I'd ask anyway. The tip on the 115 330D flywheel is great. Nice to know there's an option out there. I really don't want to run a lighter wheel than stock and would rather go heavier(slightly) if I had to go one way or the other. Thanks.

Guys,

I'm checking on 115/300d flywheels this week as I need one myself, if there are a couple more available, do you want one. Let me know. As soon as I know availability and cost, I'll get back to you

Ben

Ben, I sent you an email.