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Author Topic:   HorsePower? Torque?
K9
Dirt Roller

Total posts: 13
posted June 10, 2002 11:04 PM
Ok all you motor guru's.
I got a question for you. What part and where on the track do HorsePower and Torque come into play. Which is more important on a med.banked 3/8 mile track. That is usually tacky.
Thankyou for your time and attention,

K9

BayouGent
Dirt Forum Racer

Total posts: 87
posted June 11, 2002 12:58 AM
In my opinion torque helps your car out of the curves and having more horsepower not only increases torque but also helps carry the weight of the car faster and all the way through the straight until you reach the next curve. More power and torque and more importantly getting it to the ground in a car that turns left well will help get you around the track faster. The tacky track will give you the option of using a cam that produces more bottom end torque or running a little more timing because your car should have more bite coming out of the turns. Just my few cents

smayo964
Dirt Forum Racer

Total posts: 90
posted June 11, 2002 07:03 AM
OK, my couple pennies.... Torque is pure power as in "force" (lb/ft). Horsepower is a derivative of torque since horsepower uses "force" and time together to achieve a certain power at a certain RPM. In my opinion, you don't have to have a pure horsepower engine, and you don't want a "bottom end" engine. Depending on track length, banking, etc., you need a balance of both. If you build your engines for HP, then you are shooting for RPM and a certain power range to run the engine, which begins to sacrifice bottom end. Gearing then becomes a must, but in general is easier on the drive chain, etc. On the flip side, if you build you engine as a "torquer", you gear in the opposite direction and sacrifice RPM. The down side here is you are constantly loading the drive chain in a major way. The ultimate setup is an engine with a very flat mid-range torque curve, whereby you can still turn the RPMs for end of straights and still pull hard off the corner. So, per your question, like Bayou stated, torque is getting off the corner and HP is at the far end. There are many ways to tune or build your engine to achieve the desired range. If your track stays tacky, then I'd stay towards a midrange/torque config. Like I said, just my couple pennies.....

Monster
Dirt Maniac

Total posts: 135
posted June 11, 2002 08:58 AM
Horsepower sells engines. Torque wins races.

ford5
Dirt Freak

Total posts: 298
posted June 11, 2002 06:44 PM
LMAO@ Monster...........just like some lures are designed to catch fisherman instead of FISH!

Pickles
Dirt Maniac

Total posts: 144
posted June 11, 2002 10:53 PM
More torque lets you run a higher rear gear and less engine rpm. Which means your engine will stay together with cheaper parts. (Don't have to buy high dollar parts)

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