Re: HP loss through drivetrain.

From: Jon Steiger (stei0302@cs.fredonia.edu)
Date: Fri Oct 15 1999 - 01:08:04 EDT


On Fri, 15 Oct 1999 N2mopars@aol.com wrote:

> Two questions. First, what horsepower percentage do we lose through our
> drivetrains? Its a 96 5.2, 5 speed truck. Second, how much does a 96 Dakota
> 2WD, regular cab weigh? Has anyone weighed theirs? I need to know. As most
> of you know, my truck is waiting for a motor. It ships tomorrow. It was
> dynoed at 351hp, 369 ft/lbs torque. Thats with the alternator and water pump
> being driven. With a farely accurate weight, I can predict my 1/4 mile ET's.
> We are estimating 12.90's. Oh, all motor, no bottle, no blower. Yet.

  Hey, congrats on the motor!! (What took 'em so long?) :-)

By my calculations, you will need to weigh in at about 3800 lbs, driver
included, to run 12.90. If it weighed about 3900lbs, it should run
about 13.00. My '96 Club Cab weighs in at about 4200lbs. It has
run 14.55, and has been dynoed at 235hp and 293lb-ft at the rear
wheels. My dragstrip calcs show it should be making about 270hp at the
crank. If that's true, I'm losing about 13% due to the drivetrain.
(NV3500 tranny)

  I know this isn't exactly what you're looking for, but maybe it'll
help you to get in the ballpark...

  So, how was Kammer & Kammer to deal with? Do they ordinarily take
this long to do a motor, or was this a special case? Congrats again
on the motor! I'll be lookin' forward to those dragstrip times!

                                              -Jon-

  .--- stei0302@cs.fredonia.edu ----------------------------------------.
  | Jon Steiger * AOPA, DoD, EAA, MP Race Team, NMA, SPA, USUA * RP-SEL |
  | '96 Dodge Dakota V8, '96 Suzuki Intruder 1400, '96 Kolb FireFly 447 |
  `--------------------------- http://www.cs.fredonia.edu/~stei0302/ ---'



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