Juanesoto, is the cam still good in your blown engine? I need one and most folks don't want to break up engines when they part stuff out.
-Chris

personally i find the 617 turbo correctly running fast enough.

they are a bit doggy on take off but most benzes are until you get into the 350sdl diesel or a v8 gas motor.

even with these more powerful motors there is a hesitation on takeoff while the car crouches before leaping that is not like the instant leap off the line you get with the tranny setup of a typical 'merican car.

our 'merican cars are setup as if we all need to trip the trap lights at the drag strip in 10'.

now the typical 'merican car, unless it is a big motor high performance one, will feel this great leap off the line but quickly lose urge as the motor hits higher rpm. kindof reminds me of the way a rock bass fights. a great lunge at first making you think you have a really big largemough on the line then after a couple of seconds they more or less feel like a pair of underwear on the line as you reel them in.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

NEWS!! NEWS!! NEWS!!

I finally got a solution for my 300D. After being quite upset because of the technical difficulties of putting a 603 in a W123 and being afraid of buying a used 617 Turbo due to the risk of having another dead engine soon, I decided to overhaul my 617 NA. I got all the parts new and built my engine. It's one sweet piece of engineering. The car never felt so smooth.... A Cadillac is a rough ride compared to my old benz.

I'm very happy with the results, and now 1500 miles after the engine was built, my benz pulls hard and smooth.

However luck is kind of a *****, because two weeks after the engine was finally built, my sister's car was hitted by a truck from behind and the insurance company said the car was totaled. So she gave me her wrecked car a a source of pieces for my benz, and guess what? Her car has a 617 Turbo!!!!

So here I am, with a fresh 617 NA and a used 617 Turbo (280K Miles), not knowing what to do. Should I stay with the 617 NA? Should I replace it with the Turbo engine? Can I build one really good Turbo engine from both engines using the new parts from the NA and some of the parts of the Turbo engine?

Thanks!

Tell us what you did to the NA 617. Cost?

Mercedes' engineers made a lot of internal modifications when they added the turbo. Although some people simply add the turbo to a non turbo engine, the result is not good for reliability.
If the turbo motor is good, I'd just drop it in to replace your fresh 617 non turbo.. Then either sell that engine, or hold onto it until you need it.--which could be a long time. Or you could rebuild the tirbo motor before you install it.

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1982 300SD " Wotan" ..On the road as of Jan 8, 2007 with Historic Tags

Whiskeydan, what I did is the following: (please excuse if I don't spell a term properly)

-New conn rods
-New main cap bearings and crankshaft bearings
-New pistons, wrist pins, rings and sleeves
-New valves, springs and valve seals
-New timing chain and tensioner
-A couple of minor things, like new seals and gaskets all around.

The price was about $2000 including some machine work (head polished and sleeves installation) and some tech work I couldn't do myself (IP calibration).

Ms Fowler, what about using the turbo block and putting the internal parts of the NA that match? Like pistons, rings, conn rods, etc?

The turbo pistons have a cast in cooling ring under the piston crown that the Na pistons do not have. The turbo crank is much stronger than the NA, and I believe the con rods are also stronger in the turbo.