I agree with Marshall on the physics and philosophy....

But the real question is " WHO ARE YOU GUYS RACING" ?

If it is other MB's ..... then you are in for a shock... because they don't care if you beat them to the next stop light...

You have engines built for efficiency and reliability...

If you want fast engines you could easily get other cars which would blow the doors off your MB's.

Good ol human nature Leathermang.

Some people see a tree, a mountain, etc. as a thing of beauty. Others see it as a challenge to climb. Ya don't have to understand it. Just know that's just the way humans tick (or tock). :p

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"If anyone knows other lessons I need to learn, please tell me. I'm tired of learning them the hard way".
by JerryBro

The Glow Plug Wait: This waiting period is a moment of silence to pay honor to Rudolph Diesel. The longer you own your diesel the more honor you will give him". by SD Blue

My normal daily life; either SNAFUed- Situation Normal... All Fouled Up, or FUBARed- Fouled Up Beyond All Repair

62 UNIMOG Camper w/617 Turbo, 85 300SD daily driver- both powered by blended UCO fuels

There already ARE options for the 603.

If it was intercooled, and fuel was turned up, it would be as fast as an E300 turbodiesel(which is already intercooled).

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1987 300SDL (324000)

1986 Porsche 951 (944 Turbo) (166000)

1978 Porsche 924 (99000)

1996 Nissan Pathfinder R50 (201000)

"Others see it as a challenge to climb. "

The Smarter set of the " others" investigate to see if appreciable gains are available physics wise compared to the input of labor and money....

And put their energy into those places Identified as qualifying for being worthy of the effort....

As a footnote, the OM 616 turbo engine was intercooled by MB here to pass Euro-IV standards, there was no gain indicated in the power or torque specs, it remained the same as the non intercooled Euro-I spec of 91bhp. So you can see that the intercooler here has no function but to reduce emmisons.

It can also increase reliability. Cooler intake air = cooler EGT. For turbo systems in general, it's thermal management that is the greatest indicator of reliability, not power output.

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'83 240D with 617.952 and 2.88
'01 VW Beetle TDI
'05 Jeep Liberty CRD
'89 Toyota 4x4, needs 2L-T
'78 280Z with L28ET - 12.86@110
Oil Burner Kartel #35

http://i16.photobucket.com/albums/b1...oD/bioclip.jpg

how would you go about "turning up" your fuel pump?

Not quite. There is no power gain unless the injection pump is turned up to increase fuel delivery. This is done by turning the adjustment setscrews inside the pump, behind the rear governor cover plate.

Fully agreed but in this case it was installed to reduce emmisons, by the way, how do we get to the correct mixture setting in case we decide to put an aftermarket intercooler?

does anyone have pics of this?

If somebody feels like removing the oil filter housing to get that backplate off....

ahh i see, not one of those easy mods

is it pretty obvious once you get the back plate off which ones the fuel adjustment? ie. theres only one screw behind the cover?

Not necessarily. The OM603 engines allow access with the oil filter housing in place, but the cruise actuator removed. Here's a PDF showing how to adjust the OM603 pump full load:

http://www.meimann.com/docs/mercedes/Bosch_full_load.pdf

Note that that OM617 pumps are different, I have been told they do NOT look like the 603 pump in the PDF above, and I'm not sure where the adjustment is on the 617 pumps (sorry!)

thanks for that link.

BTW where is that page from?

No problemo, and uh, it's from my website. More docs & photos here if you're interested:

http://www.meimann.com/docs/mercedes/

http://www.meimann.com/images/mercedes/

Seriously though, it's from the Mercedes WIS (Workshop Information System), which is sort of an all-models factory repair CD set from about 1990-up, including the new stuff like 140/202/203/210 chassis, but not older cars like the 123.