I think I want a 24v

[Cummins Corvette]

I have been reading about 24v trucks putting 450+ hp on the ground with only a turbo, nozzles, power module, and a new filter. Once bombed they seem to be getting better milage than mine and have a whole lot more power. Piers said that all the power I am going to get from this 12v without giong completely broke is 350 hp. He said that he went all kinds of wild on a 12v and was only getting 425 on the ground.

 

[danandamy]

Did anyone mention how much the boxes and such cost? Did anyone mention that whichever you have, if you get much over 350 hp, you are gonna start breaking other stuff? Not trying to be a wet blanket here, get what you want but just think you should look at the big picture. I had a customer in the store today asking what he can do to make his 24v run like my 12valver. When I told him approximatly how much it would cost compared to what it would cost if it were a 12v he was like

 

[HoleshotHolset]

It is all a matter of opinion, but in my honest opinion (for what it's worth... ) I think it would be really cool to see a 24-valve block/heads with a P7100 pump... I realize the injectors are all kinds of different between the two trucks, but the advantages of the 'undervalved' pump with the 'overvalved' head would be very interesting... . and if it got to the point where one injector per cylinder still wasn't enough... . I'm pretty sure I've seen two per cylinder on race applications... correct me if I'm wrong here, folks.



Matt - Remember, there is no such thing as too much power.

 

[HEMI®Dart]

Matt,



Joe Donelly's '97 12 valve hit 602 hp on the dyno. And that was just on #2 diesel.

 

[HoleshotHolset]

Okay, that's what I need to hear about! More of this please!! And yes... I'd like fries with that!

WOW!... . that is a ton of HP..... I N E E D !! to know more about his setup.....



Matt - born with diesel in my veins (and no, I don't own any oil fields... . wish I did, though... )

 

[SlyBones]

HEMI,



I recall that Joe's 602HP was when he was using the super mental injectors. Joe did do a post a while ago talking about removing the super mentals and going to yet another set of injectors. Then someone posted they thought this pushed him up another 10-15 hp. Any truth to this rumor I am spreading??

 

[R.E. Miller]

Need more?

You guys could just order a Cummins Signature 600 and drop it in, it only weighs just over a ton and it will get the job done all day with out breaking a sweat



Poor drive shafts, transmission, and axles...

 

[HoleshotHolset]

Keep the thread goin'... . I need to hear more about Joe's truck.....





Matt

 

[LRamey]

CAnderson,

Have you tried Propane? I added it for less then $500. 00 and it does some amazing things!! I pull a 9000 lb. trailer and before propane up a long 7% grade not far from home the best I could get was 60 mph in 4th. Now I can pull it 70 + in 5th at about 3/4 throttle and the only thing holding me back is the corners. I love my 12v

 

[Nate Skate]

LRamey,

what did the propane do for your mileage and was it hard to hook up?

 

[Cummins Corvette]

I have tied propane and don't like or recomend it. With the setup I got 11. 5 mpg empty, whereas without it I got 16. 5 on the same trip. I could see mabey adding it just for the extra power, but I would then worry about breaking things, and I hate the idea of "running out of power".

 

[HoleshotHolset]

I plan on adding either 'giggle juice' (NOS) or propane... not sure which one yet. This is of course only going to be used at the dragstrip... or the occasional tire testing at stoplights... .

600rwhp is my goal, it will take a while and lots of $$ is a given... but it's sorta like a religious pilgramage... you have to do it once in your life!!



Matt

 

[Don M]

The biggest problem is that Nitrous is kinda hard on compressors.

Autowerks has eatin one up with a Nitrous shot.

The staged nitrous is the best way to go and NOS has just come up with one that is good for slowly bringing in the gas.



Propane will give big results as well.



Holeshot, you can make 600 without any gas at all... propane or nitrous.

Autowerks is slappng down over 800 with all the goodies.

Actually I think more!



Don~



advanced timing and higher fuel to air ratios add up to blown head gaskets with either.

 

[R.E. Miller]

NOS

This was posted elsewhere here, but good to look at for this topic.



http://www.teamdiesel.com/

 

[Joseph Donnelly]

Using SAE calculation method, Sickly's best number is 613. 7 on #2 only. With small injectors Lawrence and I were testing, he got 588 at May Madness.



I got 510. 7 on #2 with just a "strong" torque plate, AFC spring, Piers governor springs, correct # 370 injectors, HX40-18 housing, ported head, low compression via thick head gasket.



From what I have been able to find out, the 24 valve head flows less than the 12 valve head, and power potential is probably not quite as good. Those getting over 500 or so with the 24 valve are artificially adding air and fuel (drugs=propane+nitrous), except for Lawrence at DD who is using the mighty P7100 pump on his 2001.



I plan to sell the big turbo and try other ones in the future to see what is possible. Also will try other injectors. It would be nice to get 30 mpg and 700 hp

 

[TxDieselKid]

but how far did ya roll???

Originally posted by Joseph Donnelly





It would be nice to get 30 mpg and 700 hp

Just curious, but what kind of milage did you get when you hit 600? I know it was #2 but would like to know if it was 14 or 20.



AJB

 

[HoleshotHolset]

The info comes out!!

Finally!

I got 510. 7 on #2 with just a "strong" torque plate, AFC spring, Piers governor springs, correct # 370 injectors, HX40-18 housing, ported head, low compression via thick head gasket.

Too bad this wasn't available in kit form!!

I need to know how strong of a plate you have, and how 'crazy' you went with the head.



Seems as though my goal of 600rwhp is getting easier and easier every day!



Matt - a very happy man after hearing this.

 

[Joseph Donnelly]

I didn't go at all crazy with the head--I want durability and long life and further testing suggests the engine would not get the big gains from radical porting that a normally aspirated gasser might. I outlined what I did in a recent thread a few days ago.



The plate was custom made and hardened to my spec's. I have a few more of them, but until you get really far down the road, a #10 will do just fine. Shove it forward until the egt's get real crispy with the HX40-18 and hope everything stays together for a few runs



600 is a lot harder than 500. You get to the point where opening a few boxes is not enough, just like in drag racing, etc. As far as I know, no one else has documented a dyno run at that level on #2 diesel only with a B engine. If you find them, maybe they would share some of their ideas with us



I have not been able to find a long enough straight stretch to do any mpg testing at 600 hp

 

[HoleshotHolset]

500rwhp or even 600 is absolutely incredible on #2 diesel fuel alone.....

I can't wait to start BOMBing my truck... ... .

I thought the #10 plate was weaker than the #5 I've been looking at for my truck..... hrmmm... ...

I'll stick to bowl work and short-side radii work on my head... . seems to be the best bang for the buck. Now I just have to get me one of them there thicker headgaskets when it's head time.

I'm not all that impressed with the longevity of the HX-40..... I'm hoping to go to twins in the end, so I may as well bite the bullet and spend the cake now.

Well, if you can't test MPG at 600hp, what does it do when you try your best to keep your foot out of it?



Thanks a million for the info!!

Matt

 

[Don M]

holeshot,



No confusion on the plates. Joe is talking about using the 10 in a highly modified pump and watching the EGT's.

HX-40's are working pretty well at this time too. Looks like bad bearings on a few from Holeset.



For your pump the #5 is the better one (more power) from a stock standpoint.



Reliablilty goes away fast after 450 HP. Having 600 HP at the rear wheels for long will break things alot. Towing with something like that would never be able to happen. It would melt! HP wars are cool for the dyno and maybe some strip stuff. But everyday drivers and guys that tow trailers and such cant do it.



After 450 HP... turbo lag is a good thing.



Don~