w123fanman

So I am planning on buying a car for my 16th birthday and have some money saved up. Now me being different than most teenagers, wants a diesel car that is also reliable and stylish (you should see all the ford taurus and beaters at my school ). Now thing is I can't decide between the W115 and W123 300D. Since neither has a manual transmission, I have a dilemma, but thankfully I do have a 1982 240D car I can take a 4-speed out of and swap it with the automatic in the 300D. So question is: I know I can swap the manual from the 240D into a W123 300D but can I do it into a W115 300D (I personally like the looks of this one better)? Also if I decide to get the W115 and I want a turbo, should I put a stock W123 300D turbo on there or should I drop a W123 300D turbo engine in there? I know whichever I do some components would have to be moved, and I do know the W123 300D turbo engine is different than the non-turbo version. Also I have heard the 5-speed manual transmission is a rare find and not as easy to install but do you guys have any idea of where to find one, the cost, and ideas of how to put it in? And the last thing: Biodiesel, SVO, or WVO: I know the last 2 require modifications to the car and are bad for the fuel pump/injectors, but what are your opinions one these and for biodiesel: any good links to how to make it?

I know there is a lot in this post but I would appreciate it if anyone could help me with any of these questions. If you can't answer all of them, tell me what you know. If you can't answer any of them, give me idea. Thanks in advance!

w123fanman

Yea I do have a lot of this already figure out on another forum, but what I did figure out is no, you shouldn't put a turbo on a non turbo OM617 because the turbo version has special sprayers to keep the engine cooler, and yes you can put in a turbo OM617 into a W115 but you have to move the locations of the fuel filter and the battery. I have pretty much decided the 5-speed is probably not worth the time or money. And bio-diesel, ahh yes, have not done much research but again thinking not worth the risk but my parents do have a vehicle they are contemplating trying it in but again my parents and I are going to do some research, ask around, do some more research, before deciding if we want to take the risks and responsibilities

w123fanman

Oh yea, sorry I confused myself a bit there...

benzforever

OM617a is different than OM617 non turbo,the first one has diferent rods different crankshaft,oil lubrication system under the piston ...etc,if you want a powerfull w123 or w115 with a 3.0L L5 engine take the OM617a in USA is more easy to find one than here in Europe.About the 5 speed manual gearbox you can fit it on the OM617a but is a little bit difficult, this thing was done by Bergwerks(if i remember correctly) team, but is hard to find a 5 speed manual gearbox in USA.Take the w123 300D turbo with 4 speed auto gearbox, reduce the weight( light battery, exhaust etc) turn the mechanical Bosch injection pump with 2-4 degrees, put a carbon air filter and a exhaust and you will have a w123 with 170-180hp and tha's nice

Whargoul

Nope. What you described will make only the stock 123hp. The OM617a can't make more than 150hp without a modified injection pump. The stock pump can't pump enough fuel to make any more no matter what else you do.

benzforever

Yes you're right only about 150hp with the stock pump,170-180hp maybe with a W/M injection kit,but the pump can be tuned (bigger elements- 7,5mm)by Myna Diesel, Dieselmeken etc.

Whargoul

No. 145hp is the maximum possible with the stock pump. Any more will require a custom injection pump.

No. 160hp is the most possible with WM injection. More is not possible due to a limitation in the amount of methanol that can be safely injected.

Also no. They require an M pump from a European non-turbo engine for those modifications.

Qamar Zaman Kha

hi ,young one i am swaping 300d with 5 speed manual gear box and engine model is 1982 from w1fr.i had changed oil filter with unimug oil filter and changed the assembly of engine mounts i can share the photos