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Old 07-26-2002, 02:02   #1 (permalink)
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1/4 mile Time estimate

Hey fellas.

Well I've got a little question for you all. I know it's a little hard to say, but I'm looking at some rough estimates at what time I would expect to get down the 1/4.

My 0-100 times have been pretty consistent (I know its not a very accurate testing measure) and its usually around mid 7's.
This is on a normal road surface, with 15x205 rubber on the rear, so with some bigger rubber on the track I should be able to get a better take off (Manual).

To get to 100 I need to hit 3rd gear, and 3rd goes to around 130-135km/h, so I might make the 400m sill in 3rd... is this correct?

Any guesses as to what time I would expect?
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Old 07-26-2002, 02:34   #2 (permalink)
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I think you will probably need another gear change. I think around the 16sec mark for the 1/4 mile.
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Old 07-26-2002, 02:45   #3 (permalink)
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A good program for this sort of stuff is cartest..
Its a free dos application..

In particular is the playing with rubber size for ehancement of take off and diffrent profile rubber on shift points.. You can also get it to estimate your quarter mile time, time to x speed etc etc etc.. I wouldn't say its accurate, but I would say it can give you close estimates and you can play with some of the values to meet known values and give very good predicted values for unknown results.
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Old 07-26-2002, 04:36   #4 (permalink)
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Old 07-26-2002, 08:17   #5 (permalink)
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Low 15s is my bet.

Even with the 3.45 diff I can do 150Kmh in mine in 3rd....
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Old 07-26-2002, 17:31   #6 (permalink)
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Probably around the mid 15 second mark. Looking in car mags you see that most cars doing 0-100 in the 7's usually pull 1/4's somewhere in the 15 second bracket.
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Old 07-26-2002, 20:55   #7 (permalink)
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http://www.fordforums.com/calc.php
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Old 07-27-2002, 00:12   #8 (permalink)
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Hmm.. Just thinking about what you said Martin. I have the 4.0L box(same ratio as yours), with the 3.23 diff gears. I might have been mistaken as to what speed 3rd gear takes me to. I assume yours revs higher the mine (I change at around 5000rpm) am I correct?
I Might have to double check.

Honestly guys I have never been a fan of thoase computer calculatiors.

Thanks.
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Old 07-27-2002, 00:54   #9 (permalink)
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Yeah I take it out to 5500Rpm.

At the same Rpm in yours you could take it to 160kmh, which is a good enough speed to run flat 14s, even high 13s. So you should definately be able to leave in 3rd for sure.


At 5000Rpm you should get around 145kmh.
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