Ram50

An "upgrade" is a cp3
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I read somewhere that the cp4.2 takes 20% less power to turn due to the roller tipped plungers.

Other than that info, I'm not familiar at all with either the cp3 or others.

You can find him from the Scania puller thread.
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Ok, thanks Lieffe.
 
crackerman said:
The lml duramax went to a cp4.2. Hey have a funky timed operation that pulses inthe pump happen upon firing of the injector. A cp3 has smooth pressure increase, An "upgrade" is a cp3. Thankfully you can add two like an alternator and just belt drive them.
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how far can you reach with that Duramax cp4.2 ? If revved to 6000-7000 it makes even more fuel.
 
We took some time today and pulled the 'ol cummins out of Bodacious. I employed my newly purchased hanging scales and this is what she weighs. Of course, no water. Other than that, this is it.


cumminsweight_zpsbe2bf7c6.jpg


cumminsweight2_zps046e95f8.jpg


Dang glare. It reads 922.3lbs. I had been telling folks it weighed 1100 lbs. I was a little off. lol

Should get the BMW engines sometime this week!!!
 
DAMM .....I just hate to see the little (lmao) cummins coming out in favor of that big ole BMW power plant!! Even with it going into the jeep ya'll are building it just won't be the same. But im sure with your determination it will (hopfully) turn out fine for you. It's your time and money! lol Didn't want ya to think this is a bashing post! but that lil rig was one-of-a-kind with the 12 valve in her. Guess it'll still be one-of-a-kind with the BMW maby more so in fact, just half the power!! Good luck I'm sure it'll turn out awesome!
 
If something new and exciting was your MO, shoulda tried using the 3.0L ecodiesel from the RAM 1500 or Grand Cherokee! Pioneer the advancement of THAT market! Waaay more potential in others playing with that platform rather than the BMW powerplant.


Regardless, its a cool rig! I'd be lying if I said I wasn't jealous of the amount of cash you have as disposable income to play with this stuff! That's awesome!
 
Even with it going into the jeep ya'll are building it just won't be the same.
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True, it should be much, much quicker. lol I'm waiting to show up at one of these diesel dirt drags and getting my a$$ handed to me. ...bound to be someone building something similar this winter. Just to much fun to have in one place. lol

I said I wasn't jealous of the amount of cash you have as disposable income to play with this stuff!
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lol, have you not seen the getto jetto I drive around in??? lol
 
Picked up the BMW engines today. I can't believe I finally have them.

I had to keep them separated. The BMW engine kept wanting to knock over the poor little cummins. lol

bmw2_zps2312a0c5.jpg


bmw1_zps2895ecd1.jpg


bmw_zps6667a151.jpg


Yep, that's it less starter. A whole 487.2lbs lighter. The BMW also has two turbos hanging on it.

Right off the bat, as Craig also picked up on, the plastic intake will have to go. I can't see it holding much more than 30psi of boost.
 
Check out jeemu's mercedes build (nos build power at high rpm? Here on compd). Similar intake, he also is utilizing a design used by rcing teams. Its a cone shaped plenum welded to the plenum. It evenly distributes air to each and every runner. Resulting in higher average torque and power.
 
Wanna sell the adapter plate setup ?
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Na, we'll be using the plate and the starter for Craig's Jeep.

I've already hit a major hurdle with the BMW. I tore all the crap off it that I figured I'd never use. I pulled the plastic intake off and what a surprise I found. This thing should have some very serious intake flow numbers. As the picture shows, one intake valve pulls from one port and the other intake valve pulls from another port. It is double the fab work, but, this isn't what bothers me. The problem is that a section of the upper intake ports is part of the cam covers and still the plastic material. For now, to avoid trying to fab a whole new cam cover, I guess we'll see how tough this stuff is.

BMWExhaust_zpsb8a7f751.jpg


Here is a pic of the exhaust side. Thank goodness they merged the two ports before hitting the exhaust manifold. The exhaust ports look like they will flow some decent numbers as well.

BMWIntake_zps1bd3816d.jpg
 
Don't know if you posted yet, but what are your plans for running it? Going to get a wiring harness and stick with the common-rail stuff, or put a mechanical pump on it?
 
I'm going out on a limb here, but I'll bet those extra intake ports open and close using some sort of flap system that's programmed based on engine rpm and load. On the Mercedes 3.0L V-6 Diesel in my Jeep, the smaller round ports are the high swirl ports that are always open and an internal flap system open or closes the larger ports depending on engine rpm/load. At high load and bigger rpm, the flaps are open for maximum flow. At low load, the larger lower swirl ports are closed to increase velocity in the smaller high swirl ports, this is an emissions, fuel economy, and throttle response strategy.
 
Hey JQ, right now plans are to use electronics. A mechanical pump would take a lot of machine work to mount.

Big Blue24, you are correct about the flaps.
 
Leiffi, am I reading that chart correctly? Are the MB and BMW flow numbers greater than the cummins?
 
Bodacious said:
Leiffi, am I reading that chart correctly? Are the MB and BMW flow numbers greater than the cummins?
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Seems like BMW is better than Cummins at low lifts, MB is better everywhere. 0.400" equals 10mm of lift so you have to compare different columns of Cummins.
 
I been doing a lot of research lately and that's about it. The garage is a little cluttered with some other stuff at the moment.

I looked for a smaller inline mechanical injection pump to possibly get away from the electronics. It looks like about all there is out there would be a Bosch A pump. Even with this pump, I'm not sure the timing chain would be strong enough to turn it at full fuel. A ve would be OK except for the rpm limitations. I need to get this thing to at least 7k rpms.

I looked on jeemu's thread and I think the pump on his engine is an a pump and it is chain driven.

Just looking at my options. I'd love to go mechanical 'cause this programmer stuff is expensive and I know nothing about it.

I'm also trying to figure out if these bmw engines have the solenoid style injectors or the bosch piezo?? If I pull one out, how do you tell?? A few stand alone ecm companies I've spoken with can build a programmer but they can only control the solenoid style injectors. I'm looking at a price difference of over $1,700.

Also, I've learned the CP4.2 can be modified for more fuel. I'll have the price of a maxed out 12mm p-pump in it and it still wont put out the fuel that a CP3 will. Maybe a swap to a hopped up CP3 is in order?

I also posted Bodacious up for sale as a roller. I'd like to try my hand at fabb'n a full tube chassis, but, I hate to cut up or otherwise waste what I already have. I'll let it ride a week or so and if no one wants it, I'll have to rethink the project.
 
Look what I found.

https://www.youtube.com/watch?v=uIe-tZhtNP4

I think it has been posted on here before. I found a little bit of info about the engine. It is a 2002 model M57 BMW which is essentially the same engine I have only with an iron block. It has a mechanical in-line pump mounted on it. So, it can be done.

The Mercedes OM606 is also a 3.0l in-line six with a mechanical pump and is chain driven. I haven't been able to tell if the pump is a bosch or delfi but I did find one for sale on ebay.

I'm thinking this would be cool as chit.
 
Bodacious said:
Look what I found.

https://www.youtube.com/watch?v=uIe-tZhtNP4

I think it has been posted on here before. I found a little bit of info about the engine. It is a 2002 model M57 BMW which is essentially the same engine I have only with an iron block. It has a mechanical in-line pump mounted on it. So, it can be done.

The Mercedes OM606 is also a 3.0l in-line six with a mechanical pump and is chain driven. I haven't been able to tell if the pump is a bosch or delfi but I did find one for sale on ebay.

I'm thinking this would be cool as chit.
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never heard of that BMW after those videos, think it didn't work very well. OM606 has Bosch pump, you can have 8mmm plungers, about 800 hp has been taken out from one.

I would keep it electronic, mechanicals are so last season. Ask Tall Boy, I think his ECU can control piezos, if needed.
 
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