OM606 Thread/Info/Discussion (3 Viewers)

[TheBussman]

Isn't that the one nicknamed "rodbender"?

yes and i basically remade a 5cyl version of that but with hbeam rods and a MLS headgasket. there is documentation to suggest that the head gasket was the issue and it has been updated but still a fiber gasket. i used an om605 headgasket and had it bored out to 90mm by a waterjet cutter. i used to work at the Mercedes dealer and the rod bender problems are very real, just bends the rod ever so slightly and starts burning oil. the factory rods have been updated several times getting thicker each time. the later om602 direct injection engine in europe all got the newest best rods but i wasnt able to find anyfor sale so i had custom rods made. i made more then i needed but i'm sold out.

On the topic of stroking, there is a 3.5L variation of the OM603 that used a different crank to increase stroke over the regular 3.0L. My understanding is this crank, along with new rods and pistons can be used to stroke the 606 to 3.5L. I probably won't be doing this off the bat, but will definitely be looking at it down the road as my engine is on the higher end for mileage and would like to rebuild anyways.

yes you can make a stoker with the 606, can make a 3.3l or 3.5l depending on what pistons you want to use. i have a post earlier in this thread about making one with the stock pistons. The 606 does take some work to get it to work right and have a correct compression ratio. You can also use the om613 or om648 crank and have less of a stroker but way easier (i think) dieselpumpuk used to have the rods for sale to make that work maybe they still do.

 

[DirtSniffer]

yes and i basically remade a 5cyl version of that but with hbeam rods and a MLS headgasket. there is documentation to suggest that the head gasket was the issue and it has been updated but still a fiber gasket. i used an om605 headgasket and had it bored out to 90mm by a waterjet cutter. i used to work at the Mercedes dealer and the rod bender problems are very real, just bends the rod ever so slightly and starts burning oil. the factory rods have been updated several times getting thicker each time. the later om602 direct injection engine in europe all got the newest best rods but i wasnt able to find anyfor sale so i had custom rods made. i made more then i needed but i'm sold out.


yes you can make a stoker with the 606, can make a 3.3l or 3.5l depending on what pistons you want to use. i have a post earlier in this thread about making one with the stock pistons. The 606 does take some work to get it to work right and have a correct compression ratio. You can also use the om613 or om648 crank and have less of a stroker but way easier (i think) dieselpumpuk used to have the rods for sale to make that work maybe they still do.

Had a feeling the 3.5 was already discussed, was too lazy to look back. Definitely something I'd want to do.

 

[TexasToyocruser]

I did a 606 swap into an 80 series, anothernord followed in suit, we have another on here I'm talking with doing one. I have a dpuk r150f adapter set, new unused with bellhousing and other parts if anyone is interested. Also an old 603 mechanical pump...unmolested, still has the ALDA cap.

little late on this but still got the pump?

 

[6806goats]

Anyone try the OM648? It was only in the US for 2005-2006 and was a common rail engine or CDI. I'm working on a deal to get one with 90,000 miles but it's coming from a front end collision car. Owner is a Benz repair shop owner that I befriended 24 years ago. Still...I have this nagging feeling the back of my neck. Says he drove it off the low boy when the previous owner left it with him and he was going to power a Chris Craft boat with it. Decided to rebuild the stock flathead. I'm overseas, hard to see it first hand. Rambling.

 

[DirtSniffer]

Anyone try the OM648? It was only in the US for 2005-2006 and was a common rail engine or CDI. I'm working on a deal to get one with 90,000 miles but it's coming from a front end collision car. Owner is a Benz repair shop owner that I befriended 24 years ago. Still...I have this nagging feeling the back of my neck. Says he drove it off the low boy when the previous owner left it with him and he was going to power a Chris Craft boat with it. Decided to rebuild the stock flathead. I'm overseas, hard to see it first hand. Rambling.

648 would be cool, but would be limited to an edc pump and I believe there is a lot more electric parts on a 648 than just the pump so you would probably want the whole donor or it could get confusing and expensive. I believe there is at least one standalone controller out there for it. Mechanical pump and no electronics was a big draw for me to the 606for swap simplicity. Don't quote me but I believe the engine side bell housing bolt pattern is the same, I see some 606 adapters also say they work for the 648. It's already rear sump. Slightly larger displacement at 3.2L. Crank could be swapped to a 606, but if going that far I'd do the 3.5 603 crank.

 

[TheBussman]

Anyone try the OM648? It was only in the US for 2005-2006 and was a common rail engine or CDI. I'm working on a deal to get one with 90,000 miles but it's coming from a front end collision car. Owner is a Benz repair shop owner that I befriended 24 years ago. Still...I have this nagging feeling the back of my neck. Says he drove it off the low boy when the previous owner left it with him and he was going to power a Chris Craft boat with it. Decided to rebuild the stock flathead. I'm overseas, hard to see it first hand. Rambling.

anothernord says he was going to put one in his 80 after he took the 606 out. a little more wiring but it should be great as would the 612, and 646