kjbbudgie

hi Guys, im a newby in here but hopefully some one can help me. I ve just purchased a om642 v6 3.0l for a 4x4 hilux, but i'm goning to **** the turbo off ond put a m90 eaton super charger on it. there are no threads supporting this mod can any on put me in the right direction, any help would be appricated. once completed i'll throw up photos and hp ratings and answer any questions how I did it. What I want is so one who has done this and learnt by his mistakes so i dont do the same. regards kim

240D 3.0T

M90 is too small. If you're using it to get the engine going off the line, its only gong to be active for the first ~300rpm because the stock VNT spools up to full boost by 1800rpm.

kjbbudgie

Thanks 240d for the info, if the eaton m90 supercharger is to small what are the recommendations, also regarding i'm going to remove the turbo altogether. the reason for the super charger is i do a bit of rock crawling so I need the low rpm.

lkchris

The ECU for this engine expects variable turbo geometry and may balk at it's being missing.

The ECU for this engine also expects a drive-by-wire accelerator pedal.

kjbbudgie

thanks lkchris for the info. if any one has any other info on this i would love to here as this project is going to happen and I need all the help that I can get.

mandkole

Cool-- finally some performance discussion....

You'd have to keep boost pressure low (to avoid tearing up the insides of the stock garrett), but consider a compound set up with a centrifugal blower (like a small procharger) driving the turbo. This is becoming a very appealing way to get no lag performance. There are lots of new discussions on light truck diesel forums and shops pioneering this approach. Look up some powerstroke and duramax vids from Empire Diesel Performance...

Tuning with existing mb pcm will be a limiting factor as there aren't many guys doing this. It won't be a show stopper but will delay ultimate performance until someone fully learns the software. TS Performance would be a place to start (Dennis Perry is a hardcore diesel hot rodder and owns a GL CDI with mods).

I, for one, would like to see more discussion on mb diesel performance. Birkenstock-wearing, tee-totalers need not apply....

240D 3.0T

Except that centrifugal superchargers lag by nature, can't produce boost off idle like a VNT and don't produce full boost until maximum engine rpm. They are good for people looking for a cheap boost on their naturally aspirated engine, not genuine performance.

If you want performance you need a turbo or a positive displacement supercharger.

MBtech1098

Another option would be a compound turbo using 2 turbos in a set up like this:

http://www.atsdiesel.com/ats2/produc...und_Turbo_Kits

I was going to do a kit like this on my Dodge, but motorcycle expenses got in the way. I have a friend with one of these and off the line is amazing.

mandkole

240, ok I'm with you now. In looking back at the OPs thought, he was talking about very low speed/off idle. Agreed on the PD blower. I was thinking about higher engine speeds when you're positive pressure feeding the turbo--just like a compound turbo set up would. These set ups run positive pressure once the engine is turning some rpm and there is no lag.

A guy has one of these set ups in town on a powerstroke and its very strong, but hes driving a much larger turbo also.

kjbbudgie

Cheers Mandkole, this is what I intend to do.
Remove the std turbo and replace it with a eaton M90 super charger with a intercooler. What I will need is people with the {as you said the the software for the fuel injection}., so It can be tuned. I will proberly need different injectors {I'm not sure on this}. But what i do want to do is have 3 to 5 psi boost at idle then have max boost at full rpm {which I need to do more research on}. Thanks also for giving me that shops name as I will get in contact with him.
Time and money is not really a issue at this stage.

mandkole

Good, because you'll need both! haha... I don't know how interested these shops are in helping you pioneer this set up, but they are hardcore diesel guys. Having a one-off manifold made for the eaton will be quite a project. Injectors are a must if you're moving more air. As you said, its time and money...

I'd read up on the compound set up using a procharger style blower. It will change your mind..heres some short vids. The first one is a PSD from a roll, and the second is a duramax showing instant boost off idle. Nice pics of the set up too-- I could envision yours the same way. If I was inclined to do my cdi, this is what I'd do... http://www.youtube.com/watch?v=AZZiLiU2528 http://www.youtube.com/watch?v=6VFFE...eature=related

240D 3.0T

Nope. Centrifugal superchargers are still junk.

Thats not "off idle", thats "revving to redline". And only 20psi? Thats barely stock. Plus he has wedged himself into a dead end, he can't get anymore boost or power without changing the supercharger first.

lkchris

Lot of "talk," but this engine isn't going to fuel without the OE computer system and that computer system isn't going to work without the OE fly-by-wire accelerator pedal and the engine isn't going to run without the expected computer control of the original electronically controlled variable vane turbocharger.

240D 3.0T

It will definitely run without it, but in limp mode. Its up to the programmer to eliminate the I/O for the turbo from the ECU.

mandkole

assuming that any real programming exists beyond a fuel pressure box.. I would have gone with a mechanical cummins (4bt) and compounds before any mb diesel anyway.

240D 3.0T

Seeing as its a common rail engine designed to meet strict emissions limits, the entire thing is a rolling computer.

TwJay

I also have recently purchased a. 3.0 om642 engine and a Garrett sst compound turbo from a 2011 ford 6.7 turbo diesel, looking to build this for a off road race car, any suggestions on a tuner that can mod a PCM ? Stand alone system? Would also like to attach engine to manual transmission, I was thinking sprinter boxes, but I could easily attach to sannez sequential box with a motor plate, just concerned with auto trans integration with the PCM