Competition MAX HP: 12V or 24V?

[BillGotthelf]

We ran it on a dynojet and toasted it. Torque figures were over 1300 but they had no way for the smoke to leave the building. The back wall was 3 feet from my tailpipe and after the computer loaded (way to much) the drum and my rear wheels broke loose at 80 mph The visibility was 2" in the building. Hp numbers were over 670 when the tires broke loose. Lets see 12. 08 at 115 and weight is 6400 and we are still trying to figure out the 4 link setup and yes it is 2 wd.

 

[Snow man]

I'm only 603hp,but managed a 111. 2MPH 1/4 mi MPH with 4. 10 gears in Muncie,the air wasnt the best but its been worse. My weight was 7100,and ive got 285 tires and a level kit the truck pushes a lot of air. I dont know my ET,since i fogged the light,s my slower et was 12. 5 at 109,with shifts way off ,during that run i sat on the governor in 2nd gr and on the 3-4 shift on that run,still pulled off a 12. 51,with only a 1. 8 60 ft time,the truck can do high 1. 6's easily. My much quicker feeling run i fogged the lights,but it felt a lot better and the 111. 2 MPH proved it. I was at 3500 when i went thru the lights. Id like to see 625+ on #2,i gotta get back to work,OR do a p pump

 

[BillGotthelf]

Big difference between 4wd and 2wd. I am getting 1. 95 (best) but mostly 2. 00 60' times.

 

[1dslram]

Bill:



Your ET and weight compute to 721. 2HP, your speed and weight compute to 759. 6. With your truck being that light your HP comes out over 700 both ways. I have found the program I use to be a fairly accurate estimate of HP. At May Madness 03 and on other occasions I have dynoed and then checked the HP from 1/4 mile ET and Speed and found it to be fairly close when averaged.

Bruce

 

[banshee]

How can you add load on a dynojet? Was this on a 248C?

 

[CumminFast]

What kind of dyno did the tires break loose on??? Did they strap it down right? I know for a fact on David Dunbar's dynojet 248c he has NEVER had tire slip even w/ 850 hp blown gas engines.

 

[TxDieselKid]

There's parts out there that will give you as high a hp as you are willing to spend. Billet heads, sigma pumps, and custom turbos are all very real key components, which are all very pricey, and how the big boys use to do it. It's even further along then that now. Want proof? It's out there, just get your cash, and pick the right vendor.

 

[BillGotthelf]

The drum end was a dynojet but the computer was another brand. Don't remember exactly but we are bulding one at my friends shop. Also the HP calculators don't take alot of things into consideration. Stick my motor into a 4wd and I guarantee you will see 11's. We'll be there soon as soon as we get the 4 link figured out. I could only dream of my et with a 60' time of 1. 6's.

 

[CumminFast]

Well one of the trucks at the Garmon shop is a 2wd w/ 556rwhp and ran 12. 56 on cheater slicks. But I definately agree you are on the verge of 11s. Hope that 4-link works out.

 

[F8LDOSE]

TxDieselKid, who currently has or makes a billet head for a 5. 9 12v???

 

[BillGotthelf]

So far no one. Kind of expensive to make just a few.

 

[TxDieselKid]

Originally posted by BillGotthelf

So far no one. Kind of expensive to make just a few.

So they were cast iron heads?

 

[CumminFast]

Why would you need a billet head?

 

[Rman]

Originally posted by BillGotthelf

So far no one. Kind of expensive to make just a few.

never say never. I know some guys with cnc machines that are just into other types of racing. You got the cash and the stones to put it down for an "experiment" anything can be had. It's a sad thing that this is what racing has become, the biggest wallet, the baddest truck.



I admire the guys shadetreeing this and really experimenting to get ever ounce they can get out of these trucks. They pioneer the future for diesels and deserve some credit. A big atta boy to ya fellas.

 

[Rman]

Originally posted by CumminFast

Why would you need a billet head?

In the world of racing weight eventually plays a huge role. WHen your down to the physics if just being able to get a hundreth by dropping a few hundred pounds that's when exotic metals come to play. I think reliability would suffer with aluminum, but dang it sure wouldn't weigh near what a cast head would.

 

[TxDieselKid]

Originally posted by Rman

In the world of racing weight eventually plays a huge role. WHen your down to the physics if just being able to get a hundreth by dropping a few hundred pounds that's when exotic metals come to play. I think reliability would suffer with aluminum, but dang it sure wouldn't weigh near what a cast head would.

There are more advantages then just weight too.

 

[J.R. Adkins]

I can get CNC billet heads for 10k each. Of course it would take 7 people for me to get started.



J. R.

 

[sbentz]

Cast aluminum heads being developed

I am helping a guy out that is working on a high flow 24V head casting for a military project. He is a ways away, but as soon as I see any info, I will share it.



It may not clear a production Dodge cowl, but "where there is a will, there is a way... . "



What is really cool, is he is looking at a potential V12 engine based on 6B components. Wonder if I can squeeze it onto the dragaster. Hmmm.....

 

[CumminFast]

Well it seems if you are going to spend that kind of money, you would go ahead and build the motor so it doesn't need the billet head.

 

[TxDieselKid]

Originally posted by CumminFast

Well it seems if you are going to spend that kind of money, you would go ahead and build the motor so it doesn't need the billet head.

There are more advantages then simply weight. Think of changing the design a little.