230HP from a OM617A

[winmutt]

[Obnoxio]

Is that in a boat?

edit: I found the pic where it came from. C111. Neat stuff

[MBeige]

So how exactly did they achieve 230hp?

Heard stuff like lower compression to deal with an increase in boost. But is that it?

[R Leo]

Originally Posted by MBeige

So how exactly did they achieve 230hp?

Heard stuff like lower compression to deal with an increase in boost. But is that it?

Look at the size of the turbo and the air-to-air intercooler in that thing. Having a direct working relationship with Bosch Gmbh doesn't hurt a bit either.

Here is one resource for the C111:

http://www.classicdriver.com/uk/magazine/3200.asp?id=11583

[winmutt]

Originally Posted by ncof300d

Here is one resource for the C111:

http://www.classicdriver.com/uk/magazine/3200.asp?id=11583

The basic engine which suggested itself was the powerful, five-cylinder three-liter naturally aspirated diesel from the 240 D 3.0 and 300 D, an engine with plenty of potential for raising performance.

? 240D 3.0?????

[ConnClark]

Originally Posted by MBeige

So how exactly did they achieve 230hp?

Heard stuff like lower compression to deal with an increase in boost. But is that it?

I doubt they lowered compression. Lowering the compression would drop power and efficiency. I know someone with an 82 300SD that has run 26PSI of boost for 30+ seconds up a hill (intercooler and a modified stock turbo). The OM617 can take the increased boost.

Another reason I'm sure they didn't lower the compression is they were going for a near stock production engine record. I'm sure playing with the compression ratio would have made them ineligible for this record.

From the picture we can see they have done the following.

1. Used a 76' W115 300D intake manifold (tuned runners = good ).

2. Put a big ass turbo on it.

3. Put a big ass intercooler on it.

4. No EGR....

I'm sure they turned up the fuel and tweeked the injector pump too.

[Hatterasguy]

I know on very pumped diesels like those pull tractors you see on TV they lower the compression. The idea is the turbo chargers build the compression. I think those guys run way more then 26psi in boost...

[R Leo]

Originally Posted by Hatterasguy

The idea is the turbo chargers build the compression.

As I understand it, low compression helps to keep the EGTs under control.