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Why our cars are not made for drag racing...?

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Old 06-05-2006, 11:40 PM
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flosho
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Default Why our cars are not made for drag racing...?

[ Besides having an exploding R&P. Are there any other technical reasons why 924/944 aren't "built for drag racing"? ]


Old 06-05-2006, 11:43 PM
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Lorax
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The 944 actually has a device built into the transaxle that kills the driver instantly upon attempt of a drag race. It's a self defense thing.
Old 06-05-2006, 11:47 PM
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flosho
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Originally Posted by Lorax
The 944 actually has a device built into the transaxle that kills the driver instantly upon attempt of a drag race. It's a self defense thing.

Its a good thing my 931 doesn't have that option!!
Old 06-05-2006, 11:53 PM
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Swagger93
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Parts are expensive, they're not really geared for it, and they're old. Oh, and a sect of Porsche owners freak out about it.
Old 06-05-2006, 11:56 PM
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CV joints are known to be weak points and are known to fail.
Old 06-05-2006, 11:59 PM
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flosho
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Its not the only car that has expensive parts that is drag raced. Theres also a number of "old cars" that are drag raced..


I told a guy that a 944 turbo was not geared for the 1/4 mile and he said this:

(1986 944 Turbo)
Gear Ratios, top speed:
1st: 3.50, 39 mph (6400 rpm)
2nd: 2.06, 67 mph (6400 rpm)
3rd: 1.40, 98 mph (6400 rpm)
4th: 1.03, 133 mph (6400 rpm)
5th: 0.83, 157 mph (6100 rpm)
Looks like a normal first gear to me, maybe even a bit tall. Shifting into 2nd and 3rd appears to bring the revs down to the 4-4,500 RPM range, which is quite optimal for that engine.
Frankly I think calling a certain gearing arrangement "geared for the drag strip" or "geared for the autobahn" is complete bull****. Whether or not one gear is a little too long or not doesn't matter in a race that reaches over 100 MPH, in fact, that's about as "for the autobahn" as it gets. Right?
Any good arguments against this gentleman that I've quoted?
Old 06-05-2006, 11:59 PM
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Yabo
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also its 2900 pounds at least, with 150hp. 7 or 6 inch wide tires. open differential usually.
Old 06-06-2006, 12:03 AM
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Matt H
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Simple answer, cars built for drag racing have a solid rear axle. Live rear suspension causes a number of problem...traction at launch being the main one.

Add to that the 150HP motor and you might as well be racing a minivan
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Old 06-06-2006, 12:04 AM
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flosho
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I'm talking about a 944 turbo....

I don't know where where you got 2900lbs at least. I weighed my car with full tank of gas and it was less than 2700lbs
Old 06-06-2006, 12:05 AM
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Manning
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The transaxle is supposed to be a bitch to rebuild, so on top of pricey parts your looking at a costly rebuild or an expensive investment in several tools.
Old 06-06-2006, 12:07 AM
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Lorax
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u cood puts bulletproof cv's on their!! and a v8, and a new tranny !

For real though... its not really a competitive car for drag racing, without tonnns of $$$

that being said, with enough money, I could make my bicycle into a drag car.
Old 06-06-2006, 12:12 AM
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flosho
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Corvettes have the same design(rear transaxle) as our cars, dont they?


Well, im not really interesting in why its not competitive or what not..

I am looking for reasons why the gearing in 951s isn't great for the track? what effect does the specific gear ratio in 951s have on the ETs.

The answers like having a live rear end, and traction problems, that is what im looking for.


The turbo's with LSD is better for drag racing then having an open diff, so that isn't really a reason. Same with "expensive parts and costly rebuilds" because its certainly not the most expensive car to break... and repair.



Any other reasons other than weak cv's?


Please understand I'm not looking to stir any pot and start huge arguments, a nice debate and some material to back up why my car isn't a drag car is all I'm looking for.
Old 06-06-2006, 12:15 AM
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Matt H
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Which is why you dont see many of them at the strip. The ones that are at the strip often are not using stock parts. I could also remind you that Corvette parts are FAR cheaper than Porsche parts.
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Old 06-06-2006, 12:17 AM
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Yabo
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Originally Posted by flosho
I'm talking about a 944 turbo....

I don't know where where you got 2900lbs at least. I weighed my car with full tank of gas and it was less than 2700lbs
Curb weight: 2,965 lbs
Wheelbase: 94.5"
Length: 168.9"
Width: 68.3"
Height: 50.2"
Track front/rear: 58.2"/57.1"
Ground clearance: 4.7"

thats of an 83 944 which is lighter than a later 944....

and you did say 924/944.

BTW, 924 is like 2730 so you may be right on your weight but i was talking about 944 as that's all I really know about.
Old 06-06-2006, 12:19 AM
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Manning
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That a vette has a transaxle does not mean the 944's Audi transaxle is any more or less simple to rebuild. And using that as an example, do you know how much it would cost to replace the R&P in a vette transaxle for parts and labor. Do you have the special super long reach deep socket, dial gauge, assortment of shims, oven, etc to rebuild a 944 transaxle in your garage?


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