hi
ok so i have a super nice non turbo 617 and lets just assume for right now
that it needs an engine ( il keep the symptoms for another thread)

so my questions

will fitting a turbo 617 engine change the value of an otherwise
very original nice clean car

is it worth the effort vs resale price if i decide to sell it?

could i fit the turbo engine BUT use my non turbo intake system
would this be easier?

or... should i simply locate and install another good non turbo 617 motor


thankyou

Non turbo motors are pretty scarce here in the US I think. As for value, I'd say not much difference if its good running. If you change to turbo you'll want to change the diff and speedo too. A NA is a decent performer especially if its a stick....compared to a 240D...

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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.

thanks
well i guess if its not going to alter the value either way and its a lot less hassle
maybe i should just go with the direct replacement.

without going off topic and
just thinking out loud here but i cant see why you would really need to swap the diff
ive driven a turbo 300d and i.m.o
for local driving it was way to high geared
and should benefit from a lower n/a ratio

You have a 3:46 diff in you NA 300D. 77 - 81 used this.

82 - 84 300D/300SD used a 3:07 diff. and the 617.95 Turbo engine.

85 300D/300SD used the 2:88 Diff.

Your NA engine is 88 HP, and the Turbo engine is 123 HP.

The lower geared Diff will give you the quick off the line performance. How ever at the higher speeds
your engine will be turning at a higher RPM.

The 3:07 & 2:88 will drop the RPM`s at the higher speeds.

As Tom mentioned, if you swap in a Turbo engine, then you need the Diff from the donor and the Instrument cluster.
Or at least the Spedo. the spedo on the MB`s
is geared to the Differential.

If you want to use a Turbo engine, and then use your NA manifolds etc...
read through this thread.

http://www.peachparts.com/shopforum/diesel-discussion/367413-617-turbo-non-turbo-not-typo.html


Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

I think it's better to stick with the N/A motor just for clarity sake. It's ALWAYS questionable when you get a car and do research and find things don't add up. I'd value a car that even though went through a motor swap, still retained its original configuration.

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'84 190D 2.2 5MT (Red/Palomino) Current car. Love it!
'85 190D 2.2 Auto *Cali* (Blue/Blue) *sold*
http://badges.fuelly.com/images/sig-us/302601.png
http://i959.photobucket.com/albums/a...0/sideview.png

Have to say I do not see why you would "have too" change the rear. It will work just fine with the current rear. In time if because of more power being available you want to change the rear end ratio this could be done at any time. But certainly not needed.

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1977 240D turbo

I'm guessing you have never done one of these conversions, either using the standard 346 diff with a turbo motor or using a turbo motor matched with the 307 or 288 it was designed to use.

I have owned and driven a 240D with its standard 369 diff and a 300 NA motor. The motor raced as it does with the four cylinder motor. I have also driven the same car with the 346 rear end installed and with a 307....all using the same 300 NA (euro) motor. The mb engineers installed the taller diff with the turbo motor for a couple of reasons, all good in my book. One to increase economy. A turbo motor with the 307 will use the same or a little less fuel than a 300 na with a 346, so there is economy. Then the taller diff reduces engine speed and makes a much more relaxing ride on the highway.

Just my experience. and the 300 na euro worked fine with the 307 rear although I would not recommend it in san Francisco. With the 300 na euro, the 307 diff and a five speed overdrive the car regularly delivered 35 mpg on the roads in Muncie and between there and Lafayette. At least two tanks delivered 40 mpg. With a 307 and a turbo with a standard four speed manual our 82 300 CD delivered high twenties under the same conditions.

__________________
[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.