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  #16  
Old 03-02-2008, 08:13 PM
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Stock SVX shaft weighs 35lbs.
I'm getting an aluminum one made soon as I get back to completing my 5 spd swap.
$200. I'll let ya know what's what.
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  #17  
Old 03-02-2008, 09:07 PM
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Quote:
Originally Posted by NikFu S. View Post
Stock SVX shaft weighs 35lbs.
I'm getting an aluminum one made soon as I get back to completing my 5 spd swap.
$200. I'll let ya know what's what.


Questions, Questions!!!

Thanks for the stock SVX driveshaft info. Who are you purchasing the $200 driveshaft from? How much does the aluminum driveshaft weigh?




Quote:
Originally Posted by sicksubie View Post
dumb, dumb, dumb.... Seriously. For $1k I could get an all aluminum one made and get a stage 2 v7...
Made from whom? How much does it weigh?
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  #18  
Old 03-02-2008, 09:12 PM
tubbstcg tubbstcg is offline
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We seem to be getting a little further.
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  #19  
Old 03-02-2008, 09:30 PM
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Weight loss is fine and dandy, but its more beneficial when it also lowers the cars center of gravity (IE. removing weight towards the top of the vehicle).

CF driveshaft is a cool idea, but theres better gains to be had elsewhere.


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  #20  
Old 03-02-2008, 09:41 PM
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When it comes to spinning mass, so many people seem so booked on WEIGHT when what really matters is MASS and MOMENT OF INERTIA.

The driveshaft has a very small moment of inertia, so you'd have to rip a hell of a lot of mass out of it to know the difference.

Further, by material, the thing has no frictional losses, nor energy transfer losses (like a diff). Unless you are a long way into the car's performance already, you have money that you have no idea what to do with, or you put a mirror under your car at car shows, it's definitely not a way to go.
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  #21  
Old 03-02-2008, 09:43 PM
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Well im doing to improve the power to the ground. Not to lose weight (that is a very small bonus) i can take out the rear seats and lose more. Plus the fact it is a rotational item that is a big part to getting the power to the road rather than just losing passenger room.
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  #22  
Old 03-02-2008, 09:47 PM
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Quote:
Originally Posted by tubbstcg View Post
Well im doing to improve the power to the ground. Not to lose weight (that is a very small bonus) i can take out the rear seats and lose more. Plus the fact it is a rotational item that is a big part to getting the power to the road rather than just losing passenger room.
The point is though, the driveshaft has very little rotational mass since its a small diameter, you wont notice much of an improvement. But throw some money at it, it's not my money




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1992 Pearly LS-L w/154k miles Sold Mods: 4.11, rust

2008 DGM Legacy spec.B w/245k miles Mods: Cryotune Stage3, VF52, bushings galore, STi pink springs, Bilstein HDs


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  #23  
Old 03-02-2008, 09:48 PM
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hmm where would the most benefits be seen in the drive line to improve. I dont know much about what i am talking about it is probably evident Im just going by what people tell me. Im just hoping those people are right. You seem to know what your talking about i withdrew that before statement.
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  #24  
Old 03-02-2008, 09:51 PM
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Quote:
Originally Posted by tubbstcg View Post
hmm where would the most benefits be seen in the drive line to improve. I dont know much about what i am talking about it is probably evident Im just going by what people tell me. Im just hoping those people are right. You seem to know what your talking about i withdrew that before statement.
About the best thing you can do is a 4.44 tranny swap. That or replace alot of the subframe/suspension bushings and that sort of stuff. Most of the power is lost in the tranny, but that is just a part of having AWD......
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1992 Pearly LS-L w/154k miles Sold Mods: 4.11, rust

2008 DGM Legacy spec.B w/245k miles Mods: Cryotune Stage3, VF52, bushings galore, STi pink springs, Bilstein HDs


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  #25  
Old 03-02-2008, 09:54 PM
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Well I was planning on a 5spd swap maybe a 6spd if I can get my hands on one.
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  #26  
Old 03-02-2008, 10:01 PM
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a CF driveaft will NOT get you more power to the ground at all. It will not magically reduce the amount of parasitic loss through your driveline. Your car will simply have the ability to rev slightly quicker. Personally look at an aluminum if you have $$ burning a hole in your pocket. I do not see a TON of weight coming off a 2 piece shaft that the svx has stock.
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  #27  
Old 03-02-2008, 10:08 PM
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Ok now odepaj made some good points and didn't have to be a jerk about it. I thought a forum was a place for someone to come and learn from the community not get hassled by some guy pissed off because some one peed in his cheerios this morning.
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  #28  
Old 03-02-2008, 10:11 PM
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I know a local drag racer who replaced his stock aluminum driveshaft in his Pontiac Firebird.
It was a 6 speed with about 650 crank horse power, and an absolute HOOT to drive!
He replaced the driveshaft with a carbon fibre one ONLY for the reliability.
It did not change his ET.
With light weight wheels and tires,for example you reduce your weight, rotating weight, helping handeling, braking and acceleration.
$1000.00 would buy you light weight wheels, AND lightweight seats,for example.
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  #29  
Old 03-02-2008, 10:14 PM
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As far as cleaning up the driveline, gettign more of the motors power down..your better off doing a transmission (manual or a 4.44 auto work well. The autos can get rebuilt valve bodies, ect, for faster shifts) and stiffening up the motor, tansmission, and rear diff mounts

edit: ditto on the wheels and tires. Taking weight off there makes a HUGE diffrence
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  #30  
Old 03-02-2008, 10:14 PM
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When my next paycheck comes in im hoping to get some new wheels tires and brakes
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