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Author Topic:   Build engine for Torque or HP for modified?
BrianW
Member
posted July 20, 2004 01:01 PM
I'm thinking about building a new engine combo for the '05 season and have started playing with Desktop Dyno and Engine Analyzer Pro.... I've got 2 combos that I've been thinking of - one makes great HP from 4500, peaks at 6500 and drops off till teh 6800 RPM limit I was imposing. The other makes a really long flat torque curve - heck it's not really a curve - more of a line - from 3200-6800 it's making about 85% the peak torque of the first combo but it's flat across.

So -
combo 1 - more peak HP, slightly more peak Tq.
Combo 2 - way more "area under the curve for torque" as well as a higher average HP (not peak)

Suggestions??

goinrcn44h
Member
posted July 20, 2004 01:17 PM
#2 is easier to drive, less wheelspin, better laptimes. consistency wins races, not the fastest lap then 24 slow ones... I will take the no hit mellow anyday...

44H

smayo964
Member
posted July 20, 2004 02:09 PM
Boy, I agree with goinrcn44h, but I would have to question the comment of less wheel spin. With increased torgue, which is actual working force that horsepower can be derived from, you would increase the chance for wheelspin earlier due to you've increased your higher pulling force quicker. Horsepower is force*distance over time whereby torque is force multiplied by lever distance. I would think if you could get the tires to hook up, you'd have one heck of increased pull throughout the length of the straights with combo 2 vs. your first combination. Good luck.


outlawstock17
Member
posted July 20, 2004 04:39 PM
ditto, i'll take a big ol' flat torque curve any day....


d4490
Member
posted July 29, 2004 03:44 PM
What are your opinions on the two different software? Are the power curves telling you about the same thing? I have Desktop Dyno 2000, and am looking at a newer software.


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