Sounds like sage advice,

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1987 300SDL (324000)

1986 Porsche 951 (944 Turbo) (166000)

1978 Porsche 924 (99000)

1996 Nissan Pathfinder R50 (201000)

sweet post!!

Has anybody with an intercooler modified the full load screw in the pump????

If you install an intercooler (good one), then just adjust the full load to maximum. Adjusting ALDA just affects to low revs when boost is not up, it is usefull when you have bigger turbo and maybe modified pump with bigger elements, but with stock parts it doesn't make that much difference. Ofcourse it will increase the feel of power, but just the feel.

The pump with stock elements (5.5 mm) can only deliver 60 mm3 / 1000 strokes, it is enough for 180 hp, if we are talking about OM603. This power can be achieved without intercooler, but it will destroy your cylinder head in the summertime. I know

When you adjust the full load, then you should consider about the timing too, maybe try one or two degrees earlier that normally, you will see if it works.

And if you are thinking about tuning you diesels up some more, then I can help you. We in Finland can make you all the parts necessary, and lots of cheaper and totally better than Mosselmann.

Suitable turbo's, exchaus manifolds, tuned injection pumps (load for 130 mm3 -> 450-500 hp), GOOD intercoolers etc. We can make it all.

Br,
Mauri

ps, sorry for my english, I'm better in finish

pps. Oh yeah, be carefully when you add the boost with stock turbo, they are so tiny that more than 1 bar only increases the pressure of exchaus manifold, and that kills your engine. Stock boost 0.75-0.95 (depends on model) in enough for everything the pump can deliver, if you have good IC.

Sorry about the metrics...

You guys in Finland get to have all the fun...........................

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1983 300D W123
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Thanks for the info, Mauri! What pump timing do you use? Spec is 14 degrees ATDC for the later (1990-up) models, and that's where I have mine set. Does advancing the timing help? Also, is there any advantage to increasing the injector 'pop' pressure? Mine are at 143 bar, I was curious if there was any advantage to raising that to 160-170 bar or not.

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The 300D turbo OM603 should do 0-60mph in 10-11 second in stock form, if it's running properly. No need to mess with upshifts, just make sure it's shifting at ~4800rpm for each full-throttle upshift. Otherwise, turn up the full load and keep an eye on EGT's, and make sure the ALDA is adjusted correctly.