holset on 603 for more performance? - PeachParts Mercedes-Benz Forum

4 wheelssmoking · #1 02-28-2007, 10:02 AM

I have a used hy9 from my 03 dodge diesel, would this work on my 603? I know I would have to fab some things but that is no problem. Thanks RAY

#2 02-28-2007, 10:43 AM

It will actually LOWER your performance from boost lag. You need to have the fuel turned WAY up (think 200hp) before you should start thinking of a Holset.

greasybenz · #3 03-01-2007, 01:26 AM

Turn up the pump first. And try finding a turbo from a 3.5L 603, that is larger then the turbo on the 3.0L 603.

Here are the procedures for turning up the pump on the 603.
http://***************/forum/showpost.php?p=1966&postcount=241

Link to the entire thread
http://***************/forum/showthread.php?t=159&page=11&pp=20

also intercooling wouldnt be a bad idea either.
http://www.harvelit.com/MB300.htm#v%E4lij%E4%E4hdytin

justinperkins · #4 03-01-2007, 01:35 AM

Quote:

Originally Posted by greasybenz

Turn up the pump first. And try finding a turbo from a 3.5L 603, that is larger then the turbo on the 3.0L 603.

Here are the procedures for turning up the pump on the 603.
http://***************/forum/showpost.php?p=1966&postcount=241

Link to the entire thread
http://***************/forum/showthread.php?t=159&page=11&pp=20

also intercooling wouldnt be a bad idea either.
http://www.harvelit.com/MB300.htm#v%E4lij%E4%E4hdytin

Have you done that mod Ruben? Is it as easy as it sounds and are there no side effects?

greasybenz · #5 03-01-2007, 03:05 AM

havent, but zeitgeist must have had good success with tuning his 603. Last i heard from him he had added propane injection.

I plan on rebuilding the suspension, and upgrading to sportline before i mod the engine. I mean whats the point of engine performance if the car cant take a turn flat?

Hit Man X · #6 03-01-2007, 03:23 AM

Quote:

Originally Posted by justinperkins

Have you done that mod Ruben? Is it as easy as it sounds and are there no side effects?

I did, mine is about 1/2 turn more than stock. I may drop it 1/4 turn as it's overfueled for sure at the 13psi stock. I can see the black smoke belching at full pedal.

I thought about the 3.5 turbocharger, but unless I get a 3.5 for cheap I don't think I'll do it. Don't need the extra lag. Performance is more than adequate with the ALDA cranked totally out (or removed).

ConnClark · #7 03-01-2007, 12:50 PM

I thought about obtaining a turbo off a 3.5L 603 for my franken turbo. I couldn't locate a turbo for cheap. I also couldn't locate a map for the compressor. I'm beginning to think that the 55 trim map wasn't made available by Garrett because it was very good ( Lotus used a 55 trim T3 turbo for several years ).

justinperkins · #8 03-01-2007, 12:53 PM

Quote:

Originally Posted by Hit Man X

I did, mine is about 1/2 turn more than stock. I may drop it 1/4 turn as it's overfueled for sure at the 13psi stock. I can see the black smoke belching at full pedal.

I thought about the 3.5 turbocharger, but unless I get a 3.5 for cheap I don't think I'll do it. Don't need the extra lag. Performance is more than adequate with the ALDA cranked totally out (or removed).

Well I haven't even messed with the ALDA, which I think is out of adjustment anyway. I don't want to remove it or tweak it too far beyond how it would of been when new. Right now, mine is awfully slow from a stop, but after a couple seconds it turns into a diesel powered rocket (well not exactly, but to me it's very fast).

Hit Man X · #9 03-01-2007, 04:46 PM

Quote:

Originally Posted by justinperkins

Well I haven't even messed with the ALDA, which I think is out of adjustment anyway. I don't want to remove it or tweak it too far beyond how it would of been when new. Right now, mine is awfully slow from a stop, but after a couple seconds it turns into a diesel powered rocket (well not exactly, but to me it's very fast).

I plan to bring my SDL, you can drive it around if you want.