 Which motor would you want in your car, (for auto cross) |
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| ottox914 |
 Dec 1 2005, 06:26 PM
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The glory that once was.  Group: Members Posts: 1,302 Joined: 15-December 03 From: Mahtomedi, MN Member No.: 1,438 Region Association: Upper MidWest   |
and why...
Lets assume a 2000lb car, and no particular class. Suspension is well sorted, tires correctly sized (big enough but not uber huge). Motor #1: is pretty pathetic below 4k rpm or so. Between 4K and 7K it will top out at 200hp. Somewhere in there it will top out at 175tq. Valve train and internals will support 8K rpm, so there is a little room above the max hp rpm. Motor #2: has some power below 3k, definately pulls harder starting there. Starting at 3K it makes 150tq, tops out at 200tq at 6k rpm. Somewhere in there it tops out at 175hp. Engine will rev to 7k rpm w/out blowing parts all over, so you can go beyond the power band if needed. Lets further assume both cars run LSD, and can run any ratios for the 5 foreward speeds, so the box can be optomised for each motor in this 2000lb car. Both motors drop off rapidly after 6k and 7k rpm. Which motor would you want in your car and why? |
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Posts in this topic
ottox914 Which motor would you want in your car Dec 1 2005, 06:26 PM
messix use the torque young jedi use the torque! Dec 1 2005, 06:28 PM Andyrew motor 2
TQ is guuud.
and yes, luke is in my avi... Dec 1 2005, 06:29 PM Headrage Short AX course = Torque. Dec 1 2005, 06:34 PM ewdysar Like the other answers, Slow (under 80 mph) wants... Dec 1 2005, 06:43 PM Demick Torque is what accelerates your car. Horsepower i... Dec 1 2005, 06:48 PM Brando I choose #2...
More Torque = better acceleration,... Dec 1 2005, 06:49 PM J P Stein If you were running against me, I would agree with... Dec 1 2005, 06:57 PM jhadler Mid range torque is what you want, not peak power ... Dec 1 2005, 07:27 PM Dave_Darling If we assume that we can change all of the gearing... Dec 1 2005, 07:40 PM Dr. Roger BROADER torque band...
then match the best gears ... Dec 1 2005, 07:42 PM rick 918-S Dec 2 2005, 02:27 AM  |
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