DS4 Injection Pump Output

[turbovanman]

That's impressive numbers, :thumbsup:

 

[3500_6.5]

I think you could get closer to the numbers of a DI engine. Haven't had the chance to try yet, but I think if you can get it to burn the fuel efficiently you could get similar numbers (360+ range) out of the 6.5. A Duramax can be fine tuned and keep the fuel rate the same and gain some hp, don't see why with the right "tuning" of an IDI that you couldn't push the hp a little higher too. A stock 6.5(my k3500 anyway) is rated at 195hp at 64.5mm3 and I think that with some simple tweaks with exhaust and intake it can easily get 200+hp with the same fueling. So theoretically (I know theory and reality can be way different, but just for arguement's sake), if you nearly double the amount of fuel-comes out to be roughly 86% increase of fuel at 120mm3- then under ideal conditions, you should also be able to nearly double the hp (195hp increased 86% would be roughly 363hp, 200hp would be 372hp). Plus if you can keep that 120mm3 all the way to 4000 rpm, and can run the 6.5 there safely, that will also increase hp capabilites just from the added rpm range. I think it might take a lot of work, but I think with the right set up, you could get close to the 400 hp mark running 120mm3. All pure theory and speculation though until I can actually get the fueling and test it out...

 

[Jorge6.5]

Here is a thread you should check out http://www.dieselplace.com/forum/63...nique-diesels-compound-turbo-setup-6-5td.html

 

[3500_6.5]

Thanks for the link. Will be a very interesting build to follow. Be curious to see what kind of power he ends up getting out of it.

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[JayTheCPA]

. . . but I think with the right set up, you could get close to the 400 hp mark running 120mm3. All pure theory and speculation though until I can actually get the fueling and test it out...

Peninsular is telling me that the OE DS4 is good to get 250HP out the P-400 that I have on order; also, am seeing that they have a 400HP 6.5 configuration available. Am liking what I am hearing by way of not needing a new IP for the P-400, but will prove it out when the time comes.

Next question is how to harness higher HP levels as, from what I am gathering, the OE 4L80E is good up to the 500 ft/lb territory and questionable after that; do not know what the NV ratings are.

Here is a thread you should check out . . .

DP folks are basically confirming (with a bit of ego tripping) that changing parts in the 6.5 will get more power out of it. What they do not recognize yet (but are starting to get closer to an awareness) is that changing one thing causes a ripple effect into other things, these other things need tweaking as a result, and so the cycle goes. Having mechanical systems makes solving the ripple effects more complex as it takes longer for trial-and-error style corrections and it gets tough to know with certainty whether the end product is as good as it can get or just close enough to stop chasing.

For fine tuning OBD trucks after a parts upgrade, fortunately there are are a few people (only 5 that I am aware of) that are taking a deeper dive into the ECM's data tables and can help take a lot of the guess work out of regaining harmony; the ability to data log helps a lot too.

 

[THEFERMANATOR]

Peninsular is telling me that the OE DS4 is good to get 250HP out the P-400 that I have on order; also, am seeing that they have a 400HP 6.5 configuration available. Am liking what I am hearing by way of not needing a new IP for the P-400, but will prove it out when the time comes.

Next question is how to harness higher HP levels as, from what I am gathering, the OE 4L80E is good up to the 500 ft/lb territory and questionable after that; do not know what the NV ratings are.

For a comparison PEN is telling you a 6.5 with a maxxed out DS4(roughly 92MM3 of fuel is the accepted proven max) will yield 250HP. A bone stock LB7 is 89MM3 of fuel and is 300HP. LLy's hit 310HP with roughly 92MM3 of fuel(but there torque number is a good bit higher at 600 Vs the LB7's 520 or so). As for your trans, I doubt a 6.5 is going to make the kind of low RPM torque to tear up a 4L80E. Put in a good shift kit, billet piston converter, and a set of ALTO clutches if your concerned. A 34 element sprag would be a good upgrade as well.

 

[JayTheCPA]

For a comparison PEN is telling you a 6.5 with a maxxed out DS4(roughly 92MM3 of fuel is the accepted proven max) will yield 250HP. A bone stock LB7 is 89MM3 of fuel and is 300HP. . . .

In case that was a question about getting 250HP with a DS4, I am skeptical but willing to try. What I know is what I am told . . . I specifically asked whether the OE DS4 was capable of getting the P-400's 250HP rated power and the response was that it was capable as long as the ECM was updated (but no comments on fuel curves nor recommended programmers) and the injectors pop'ing at 2,200 psi. So, after I get the ECM back from KOJO, time will tell whether your inputs get the results

Another targeted question was about durability for the OE 4L80E in back of the P-400 (with the presumption that it put out its rated power) and the response was that it was workable, but a rebuild to 4L85E specs was the recommendation. Personally, the 4L80E is not for me and I am already saving up for another tranny when I put the Burb into towing duty.

 

[THEFERMANATOR]

I see no reason why a 4L80E won't hold up to a 6.5, even a fully built to the hilt 6.5. there are guys out there running the 4L80E behind the DURAMAX with good results. The 4l80e and 4L85E are very simliar, but use different planetarys and such in them to boost the torque input rating up from 480 to 490. I've also been told there is an RV version of the 4L85E with nearly straight cut planetarys, but have never seen one to verify it. The 4L80E with a few upgrades will take whatever the 6.5 can dish.

As for the comparison, I was just using that to point out the differences in efficiency of IDI VS DI. I brought it up earlier that a DI could make better useage of available fuel, and was just using the fuel number you were given by PEN to show what a DI could do with the same amount of fuel.

 

[3500_6.5]

x2 on that. You can build a 4l80e to handle whatever you want it to. Just costs more cash the further you want to go with it. But a 250hp 6.5 should be no problem for it. A shift kit and increased line pressure should hold just fine. Driving habits of course will affect that. If you're hauling heavy loads and driving it like you stole it, it probably won't last as long...

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