600+ hp complete

[Stomp]

Here is the one for diesel only and the bottom one is the run from last month on diesel only.



Stomp

 

[Moab4x4]

Gee, I'm not sure which sounds better: 680 HP or 425% of stock output?



Congrats!!

 

[glhs]

Great numbers Stomp.

What turbos are you running, if you don't mind me asking?

Kurt

 

[Stomp]

Great numbers Stomp.

What turbos are you running, if you don't mind me asking?

Kurt

Full Piers HX40/16 top BTH3B/26 bottom.



Stomp

 

[pepecat]

Just thinking out loud...

In efforts to squeeze out higher HP/less resistance on the rollers, has anyone considered using non-aggressive tread pattern tires on the rollers, like my Michelin ltx A/S with a relatively flat rolling surface? Or maybe even Slicks or semi slick tires?

I just know that when I'm on my bicycle rollers (trainer) the road bike is much easier to pedal than the MTB with knobby tires. Maybe the HP gains would be negligible, but just a thought...

 

[MMiller]

One thing to remeber Cade, is we are measure hp/torque to the ground. The gears, tire size, thread all change the amount of power being put down IMHO. We know that mud tires take more power to turn down the road. We know that taller tires take more power, and we know that taller gears take more power to move the truck. A dyno is mearly measuring how much power is making it to the ground. I just dyno with my mud tires because, that's the way my truck is every day, I dyno it the way it is. Now I could get better numbers if I went to stock street tires, but thats not how it runs down the road every day.



At the shop I work at, the dyno operator finds the gear ratio in the differentials, he finds the gear that is 1:1 in the transmission, and also driver tire size. This is all loaded into the dyno software before the dyno run. This is a load type dyno, and not mearly an acceleration type. I've always contended that a load type dyno is a better way to test a diesel, but there are many diesels here that would not last on a typical dyno run. When we take a 600 hp Cat truck, run it up to WOT and pull it down in increments to peak torque or about 1200 rpms. Many diesels here would be melted down after a pull like that, or at least overheated. But that is the difference in a performance diesel, to a stock diesel.



Michael