OM 603 conversion from OM617

11 replies [Last post]
Zumbi
Zumbi's picture
Offline
Joined: 28.11.2013
Location: Myslenice, Poland

Hi Everyone,

Im doing a engine conversion from 617 to 603 in my 83 lwb. The 603 is from an w124 and has already been used in my friends 460 300gd from 87 for a short while . He changed it to a Musso engine as he needed more power. I will be using the car for long journeys and I already have a w124 with the 603 engine and I love it for its reliability and simpleness and I know this particular engine is in good condition.

The 603 engine which I have has the oil and pump modified, the air intake is from a 300TD so I will just make a connection to the air filter on the same side. I also have the engine support mounts which fit.

I will be connecting the engine with the original 4 speed gearbox and I know the gerbox - engine connection will fit.

I would like to know what problems will I be going through before start?

I know that I need to buy the exhaust output to fit the exhaust pipe.

How about the glowplugs? I have the original 603 glowplug steerer and can it be easly connected or will I need to make a seperate manual switch for this?

What about the gas pedal cable?

Is there a step by step thread somewhere with such a conversion as I couldnt find it on this forum?

As I start I will document the whole operation on this forum with pictures.

Sorry for my english ;)

big thanks for any help!

Zumbi
Zumbi's picture
Offline
Joined: 28.11.2013
Location: Myslenice, Poland
Re: OM 603 conversion from OM617

Thanks for all Your helpfull hints...

axel
axel's picture
Offline
Joined: 26.07.2010
Location: South West UK
GWOA Groups: Members
Re: OM 603 conversion from OM617

it was my pleasure , well done pawel -it works !!

Zumbi
Zumbi's picture
Offline
Joined: 28.11.2013
Location: Myslenice, Poland
Re: OM 603 conversion from OM617

Thanks for all You great help Mike! Couldnt have doon it without You. Engine runs super smooth :)

axel
axel's picture
Offline
Joined: 26.07.2010
Location: South West UK
GWOA Groups: Members
Re: OM 603 conversion from OM617

good for you to get it done /not easy especially when you hit obscure problems with parts mismatch etc.

   i await my limited edition 'treasure chests' or 'rustler' back catalogue gold editions as a token of appreciation ...

gav.helme
gav.helme's picture
Offline
Joined: 29.04.2011
Location: North Lincolnshire
GWOA Groups: Members
Re: OM 603 conversion from OM617

Looks like a neat job.....you sure Axel has not nipped across and done it for you?

All prepped for an OM606 in a few years time now...

Zumbi
Zumbi's picture
Offline
Joined: 28.11.2013
Location: Myslenice, Poland
Re: OM 603 conversion from OM617

Axel just gave me a lot of answers to my questions. All the work has been done by myself.

tony.bruegger
tony.bruegger's picture
Offline
Joined: 31.10.2010
Location: Somerset
GWOA Groups: Members
Re: OM 603 conversion from OM617

looks very tidy in picture - well done !

Zumbi
Zumbi's picture
Offline
Joined: 28.11.2013
Location: Myslenice, Poland
Re: OM 603 conversion from OM617

Thanks Tony, its always different when things like this are done by yourself and You can take Your time to make it nice and tidy. The 606 is maybe a future option. At this moment Im really happy with the condition of the engine and maybe I will think about getting it a turbo. What turbos would You guys reccommend as I head a lot of bad opinions about the original turbo from the 603 turbo version?

Axel, You have a nice bottle of local vodka waiting for You ;)

montreal
montreal's picture
Offline
Joined: 23.07.2012
Location: Shropshire/Wales/Cheshire
Re: OM 603 conversion from OM617

Im going from 603 turbo to. 606 now. I will have a complete engine less pump. Turbo is available. As far as we know it will need one piston and ring set as it was slapping. The basics are there fir a nice engine. I may post it on the for sale ads when done. Not sure. How much

tony.bruegger
tony.bruegger's picture
Offline
Joined: 31.10.2010
Location: Somerset
GWOA Groups: Members
Re: OM 603 conversion from OM617

Axel...just read yr reply.laughed till my stiches hurt

diesel_jim
diesel_jim's picture
Offline
Joined: 24.07.2013
Location:
GWOA Groups: Members
Re: OM 603 conversion from OM617

Tony, good to see you back on line again!

 

Hope the R&R goes well.yes