W115 -240d - help...

[nachoman]

hi all and happy new year
over the past 21 months ive been slowly restoring a w115 240d auto.
Mostly fixing rust issues., so firewall and floors have been repaired ( even had to pull dash out )
replaced windscreen shields , rebuilt auto transmissions

however now comes the motor , it blows smoke and the diesel blow by is a problem
so my options are to repair/rebuild the motor
or a swap
Id like to keep the original transmission in it , as it has just been rebuilt
so im thinking a om617 ( non turbo ) in keeping with the diesel theme. and there are plenty of w123 300d in my area ( the turbo never came to my country )
or
convert to a petrol motor, and something like an m130 or m114
the w115 has those two firewall to chassis strut braces , so i dont want to remove them and compromise the integrity/strength of the body.



Thanks for any feedback

[cth350]

I believe there are threads in the diesel section about transplants of more modern diesel power plants into a W115. Many touch on the need to do something about the oil filter housing, which will be in the way if it's not relocated via a block-off plate and some plumbing.

-CTH

[nachoman]

is there a kit available for the remote oil filter ? or is it a custom job?

[gmog220d]

Yo Nachoman! Welcome to the forums. Sounds like you've been investing a fair amount of time and energy into getting this car back together. We'd love hearing more about what all you've done, and photos are always welcomed!

I would hesitate to give up on the engine without having checked into it further. You might have a good engine that needs some TLC. How many miles are on this car? Can you drive it now? More details on what the engine does right vs what it does wrong?

Smoke can be caused by fixable issues. Not quite sure what you mean by "diesel blow by", but if you are thinking of engine wear like worn piston rings you might consider doing a compression test.

[nachoman]

Here it is.
not sure on miles , but i suspect plenty... it drives ok , but really struggles up hill and when i pull up at a set of lights , can see small amounts of smoke coming from the back

The rust in the floors/firewall have been repaired. Motor/trans were taken out , as was the dash.
The trans has been rebuilt , hence why i want to keep it.. I have also replaced front/rear windscreen seals and have new door seals to go in soon.
it does need the front guard repainted ( as the tint is too dark )

[nachoman]

oil pressure is good
the smoke comes from the breather pipe , and i can feel oil on the inside of it

[Sugar Bear]

Nice looking car...

What color is the tailpipe smoke? A chemical ring soak, some long hot hard driving, valve adjustment and valve seals may help the situation. Do a compression test if you can.

Good luck!!!

[t walgamuth]

A little smoke is normal....black.

[Idle]

Originally Posted by nachoman

oil pressure is good
the smoke comes from the breather pipe , and i can feel oil on the inside of it

You should find a Mercedes mechanic and have them check the tension on the timing chain. As they slack out it messes with the camshaft timing and this can cause that oily film you see on the tops of these engines. It is easy to see it is coming from the breather pipe on top of the valve cover.

This could also be the cause of your incomplete combustion which is causing your black smoke.

Black smoke is normal until the engine is warmed up and also under heavy acceleration. It should not be a constant thing.

A compression check would also be in order to determine the condition of the rings as it could be they are worn.

Mercedes sels, or at least they did, what they call the 'first rebuild kit' which includes oversized pistons and rings in order to compensate for wear on the block. The block will need to be bored out so this is not a home mechanic job. But it is the only way to do it right.

Any dealer could do the tests needed and the repairs. It would not be cheap, but it would retain the value of this 240d, values which seems to be rising at the moment.

[nachoman]

Yes, there is definitely the oily film around the breather pipe

[Diesel911]

Originally Posted by nachoman

is there a kit available for the remote oil filter ? or is it a custom job?

You need to pick an Engine with the same Oil pan configuration. There is the motor mount locations.

People have made a plate out of aluminum or even steel and drilled and tapped the plate for hose fittings.

[nachoman]

Originally Posted by Diesel911

You need to pick an Engine with the same Oil pan configuration. There is the motor mount locations.

People have made a plate out of aluminum or even steel and drilled and tapped the plate for hose fittings.

So to summarise
to use the om617 from a w123
need to relocate oil filter
change over oil sump and motor mounts ?

[cth350]

the aluminum arms that connect the block to the rubber motor mounts may be the wrong lengths. They are fixable by cutting them and TIG welding the parts back together, if the right ones aren't easily found (the W123 ones in a W115 chassis may not be the right ones).

Relocating the filter in a W115 chassis is just about a given.

You might also have to mess with the exhaust down pipes, but that will be minor compared to the work you've already done to the car.

-CTH

[Cairo1966_W110]

I have a W110 which has a OM 615.940 engine in her! I am not sure, but I believe the 615 engine came out of a wrecked W115.

Due to the fit, I have no oil filter. Not great, but I change the oil very frequently.

I am interested in the relocated oil filter housing. There is a plate on my engine bolted over the place where the oil filter housing should go. The oil pressure gauge connection is there, and my oil pressure gauge works great.

If anyone has any further details on which oil filter housing is good and how to go about drilling the plate, or any dimensions, that would be really helpful. As I am a little bit apprehensive of driving around without an oil filter!!