603,606??? I Cant choose ?????

[jef d]

Ok, I know you are all tired of my redundent posts, but I am very up in the air about my which way to go ??? Here is the stoy (if you didnt know already)
I have a 93 300sd with the rod bender,The car is clean and I think it is fun to drive,any way I would like replace the motor, the next couple of weeks, Here is where the confusion starts, Which motor do I put in,I got a good deal on a 191,000mi 606 TURBO motor for about $1000 complete, from a running wreck, Is this motor still good?? the 24 valve head ? pistons ? crank? 191,000 is alot of miles. I know it takes some mods to put in but not to bad, The other way is I found a pretty good dealer ,who will sell me a 603 short block for $1700.00 or $2500.00 for a long block w/a #14 head delivered to my door! with a warrenty! I will bolt on my parts and yahoo,im off! but, I still wind up with a 300sd thats still grossly under powered ! NOW, can I get the 603 to get up like a 606 without sending the pump to myna? and if so how ? Please try and help me deside? And I will let this tread die! once and for all !!! thanks for your support! jef d

The 603 will be far more easy to install and that 606 is likely non turbo.

[jef d]

Its a 1998 turbo , If I go for it ,after I sell my 6 month old rebuilt #17 or 18 head I forgot which I had? total will be approx $300 to $400 for that motor as is ! Can I get the 603 to run that good ?

[300SD81]

Take the 606 and the 603 short block, the price difference witht he 603 long is pretty small, put the 606 head on the 603. Isn't the 606 head the good crossflow? That wau you basically have a 606 with a turbo bottom end.

[Jeremy5848]

The 603 will be a lot easier to install. An awful lot of electronics on the turbo 606. I don't know the HP of a turbo 606, the 603 is about 148. Older SD's for years had only the 617 engine with its measly 123HP and somehow people survived so you should be OK with a 603.

[Oracle12345]

both are good major differences are basically are more components are electrically controlled and the head is a dohc instead of sohc in the 603.

an article here if you know german:

http://da.wikipedia.org/wiki/Mercedes-Benz_OM_606

[jef d]

The 606 will get the 603 ip ! There wont be all the complicated electronics. I just need to know if you guys feel its worth all the work to put in a 191,00 mi 606? how long do they last ? should I freshen up the engine ? Will it be a really a big difference from a 603??

[awsrock]

Originally Posted by Jeremy5848

The 603 will be a lot easier to install. An awful lot of electronics on the turbo 606. I don't know the HP of a turbo 606, the 603 is about 148. Older SD's for years had only the 617 engine with its measly 123HP and somehow people survived so you should be OK with a 603.

The 606 turbo makes 175 hp, and a 603 with the IP maxed out makes about the same.

I didn't think you could put a 606 head on a 603

191k isn't bad, as long as it wasn't severly neglected. It should be fine to at least 300k with proper care, I'd say.

[Oracle12345]

Originally Posted by awsrock

The 606 turbo makes 175 hp, and a 603 with the IP maxed out makes about the same.

I didn't think you could put a 606 head on a 603

191k isn't bad, as long as it wasn't severly neglected. It should be fine to at least 300k with proper care, I'd say.

you can put a 606 head on a 603. only differnce between the 2 in terms of castings is the head, the lower bloc is the same

im thinking about putting an om612 in a w123. CDI in a w123 hmm

its just like the 617. the lower block castings are the same both trubo and non trubo, only the difference is the head

[jef d]

If this is true, I would get my new short block and use the 606 head ! but how can I know for sure ?

[Oracle12345]

http://www.youtube.com/watch?v=Ie09LdO1n0c&feature=PlayList&p=4F13245E66EA1577&playnext=1&playnext_from=PL&index=3

plently of videos that tell you about the om606

[Jeremy5848]

Originally Posted by jef d

The 606 will get the 603 ip ! There wont be all the complicated electronics. I just need to know if you guys feel its worth all the work to put in a 191,00 mi 606? how long do they last ? should I freshen up the engine ? Will it be a really a big difference from a 603??

The OM606NA in my '96 E300D has 260,000 miles and has never been "freshened up." The POs (I am #4) always took good care of it–changed the oil, etc.–which is part of why the engine is still good. I have all the past documentation. I currently use Mobil-1 (POs used a diesel-grade dino oil), change it annually (car gets driven only about 8,000 miles a year) and the engine uses/burns/leaks no oil during that year.

Your question, then, has to be "how well was this engine cared for?" If, in your opinion, there has been no abuse, I wouldn't worry about the 191,000 miles. At most, pull through a new timing chain. Maybe not even that.

Jeremy

[Jeremy5848]

Originally Posted by Oracle12345

. . . its just like the 617. the lower block castings are the same both trubo and non trubo, only the difference is the head

Are the oil squirters part of the block or part of the head (they squirt oil at the piston undersides in turbo engines)?

[Oracle12345]

Originally Posted by Jeremy5848

Are the oil squirters part of the block or part of the head (they squirt oil at the piston undersides in turbo engines)?

in the casting for the lower block holes are drilled and tapped to attach the oil nozzles which are held in place with 2 5m allen bolts per clyinder

[bgkast]

I would go with the 606 my self, but it will be a bunch more work.