engine swap question - PeachParts Mercedes-Benz Forum

violinr · #1 07-11-2008, 06:38 PM

Hi,
I'am putting an m110 6 cyl. engine (out of an 280slc) in a 380sl body that still retains the original 380sl tranny...Question is ...will they bolt up or do I need to use the 280slc tranny that has some type of an inch thick adaptor plate bolted to it....I should have unbolted the tranny from the 6 and checked before I set it in...but I didn't, ,,and when I went to put the drive shaft in, I found out that the 280slc transmission needs a smaller plate or yoke in order to bolt up.
Thanks ,
Reggie
Mammoth cave , Kentucky

JimFreeh · #2 07-11-2008, 07:31 PM

On the older MBs, the V-8s had a different bolt pattern on the bellhousing.

Inline engines were one family, V-8s were different.

This was true in the seventies, and since the R107 hails from that era, I suspect it is still applicable.

Jim

Strife · #3 07-11-2008, 09:15 PM

Quote:

Originally Posted by violinr

Hi,
I'am putting an m110 6 cyl. engine (out of an 280slc) in a 380sl body that still retains the original 380sl tranny...Question is ...will they bolt up or do I need to use the 280slc tranny that has some type of an inch thick adaptor plate bolted to it....I should have unbolted the tranny from the 6 and checked before I set it in...but I didn't, ,,and when I went to put the drive shaft in, I found out that the 280slc transmission needs a smaller plate or yoke in order to bolt up.
Thanks ,
Reggie
Mammoth cave , Kentucky

Let us know what the gas mileage winds up to be...and thanks again for the cam and other parts!

Roncallo · #4 07-11-2008, 09:56 PM

I believe this should all be a bolt in. But I think the trans has to go with the engine and possibly the drive shaft.

Strife

I would be interested to know what you getting for gas mileage 380 vs 560.

BTW I am expecting my V12 to get better mileage than the 560 due to newer technology. Hopefully we will soon see.

violinr · #5 07-11-2008, 11:16 PM

Thanks for the info!..Now to find the front part of a m110 driveshaft!

Roncallo · #6 07-12-2008, 07:30 AM

Quote:

Originally Posted by violinr

Thanks for the info!..Now to find the front part of a m110 driveshaft!

I guess your telling us the SLC drive shaft is too long and the 280 and 380 are different.

violinr · #7 07-12-2008, 08:05 AM

The 280slc drive shaft and Rubber is much smaller in diam. where it bolts to the tranny..I only have the larger 380 drive shaft...so I will have to find a drive shaft from a 6 cyl....Reggie

Mike D · #8 07-12-2008, 08:40 AM

Check with Ron (Melted Panda) or 300SDog. They're both in your neck of the woods and they usually have the oddball stuff you'll need.

Roncallo · #9 07-12-2008, 09:55 AM

Quote:

Originally Posted by violinr

The 280slc drive shaft and Rubber is much smaller in diam. where it bolts to the tranny..I only have the larger 380 drive shaft...so I will have to find a drive shaft from a 6 cyl....Reggie

One place where you might luck out. It may be possible that 380SL and 280SL transmission flanges have interchangeable splines and seals. I kind of lucked out this way. In that I needed larger spline 3 lobe flange to mate with my 560SL 3 lobe drive shaft. Well the 560SL and SL600 flanges were not interchangeable however the SL500 3 lobe and SL600 4 lobe flanges were interchangeable. By using the SL500 flange on my SL600 transmission I could now mate the SL600 transmission to the 560SL.

M120 into 560SL (With Pictures!)