M110 turbo conversion, turbo oil feed?

[fha772]

Hi all,

I'm planning my turbo conversion on my '82 280E, with the M110 engine.
I was just wondering where to get the oil feed for the turbo from?

Has anyone got any ideas.

Cheers Frank.

[Stretch]

Most people seem to tap it from the oil filter housing.

What are you going to do for the drain?

[fha772]

That's what I thought, I'm thinking of fitting a T piece in the return pipe after the oil has gone through the filter and oil cooler.

As for the drain, I was going to modify the sump pan, directly below the turbo, and let it drain straight down, back to the sump.

[Stretch]

Originally Posted by fha772

That's what I thought, I'm thinking of fitting a T piece in the return pipe after the oil has gone through the filter and oil cooler.

As for the drain, I was going to modify the sump pan, directly below the turbo, and let it drain straight down, back to the sump.

Guessing that the M110 oil filter housing is much like the OM617 =>

You might find that the oil cooler is controlled by a thermostat - this only supplies oil to the cooler when the engine oil gets hotter than ?? degrees C. It isn't therefore a constant supply.

If you remove the thermostat then I think it would work but you might then arse up the non-return valve functionality and drain the oil filter with the engine switched off.

I'd be considering a custom made spacer that would fit between the block and the oil filter housing that would enable you to tap off the connection neatly. But is there space?

[jdhill]

I'm planning on removing the oil pressure sender on the oil filter assembly,
replacing it with a "T" fitting then attaching a supply line to the turbo to one side and the sender to the other. Would that work for you?? I know your engine uses a different layout for the filter assembly than my 280SL.

[Stretch]

Originally Posted by jdhill

I'm planning on removing the oil pressure sender on the oil filter assembly,
replacing it with a "T" fitting then attaching a supply line to the turbo to one side and the sender to the other. Would that work for you?? I know your engine uses a different layout for the filter assembly than my 280SL.

You got me interested enough to go and look at the FSM

Wow!

There are loads of similar versions for the oil filter housing for the M110.

There is a R107 and W123 version that was used for the continuous fuel injection and second version carburetor engines that look like it has a nice big hole for the oil pressure sender. Some of the other designs don't look so promising. I don't know how much oil a turbo is going to need but I guess it is going to be more than a dribble.

[Admiral Ahani]

The fitting for the oil pressure gauge might be a bit small. I don't know how large it is on the m110, but on my om617 and m100, they are both the same, and look too small for a turbo. IMHO.

One thing I have seen people do is to drill & tap a hole in the engine block at one of the main oil supply galleries.

You might also look into how the oil flows in the filter housing. I don't know the flow, but maybe you could drill & tap into the side or top of the housing?