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Old 02-01-2005, 07:46 PM   #1
Boosted1
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Driveshaft Question

Ok, I am going to try to sell the car "as-is", but if it doesn't go soon, those U-joints are going to need replaced. They want $250/piece Canadian, plus installation. I can get a carbon fiber driveshaft for like $700 American, so I am wondering if the extra money would be worth it. What does a CF driveshaft do for performance anyway?
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Old 02-01-2005, 08:11 PM   #2
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Re: Driveshaft Question

I think its just the weight difference and drivetran loss when you get going, might feel more peppy. Plus it weighs a lot less so thats good all around.
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Old 02-01-2005, 08:58 PM   #3
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Re: Driveshaft Question

Yah, you'll definatly accelerate quicker. Plus since it's carbon fiber if it ever breaks it won't shoot up through your floor pan and kill you... (If that's ever happened... to anyone...)
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Old 02-01-2005, 09:09 PM   #4
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Re: Driveshaft Question

There are some people who worry about a 1 piece driveshaft doing shit like that. I like them though, they are lighter and all that.
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1995 3000GT VR-4
Installed: ESP front precat eliminating downpipe, test pipe, RF-1008 K&N, Dejon tool Y pipe, 1G DSM BOV, MSD wires, Guted rear pre cat, ISSPRO EV Marine boost gauge, IPO MBC, EGR blockoffs, Palm m515 dataloger setup, NGK iridium plugs, SPEC stage II clutch 500ft/lb, 5300k HID plug and play setup.

Soon:Topline Engineering ground wires.
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Old 02-01-2005, 09:33 PM   #5
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Re: Driveshaft Question

There are alot of good threads about light-weight driveshafts on 3si. As far as I know you can get 1, 2, or 3 piece ones made from CF, aluminum, and possibly one more material that I can't think of right now.

The advantage of them is not only the weight reduction, but the weight reduction is in a key place...the drivetrain. This is a reduction in rotational mass, which means less parasitic drivetrain loss of hp...which is good as this is one of downsides of AWD.

The one piece lightweight DSs cause some people to complain about vibration, so some recommend going with a slightly heavier (but still less than stock) 2pc. Others say you can simply flip the driveshaft over and it will stop the vibration (if there was any)...I have no personal experience withe them, so I recommend checking out the threads on 3si and seeing what actual owners have to say.
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96 3000gt vr4
-K&N FIPK
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-Cusco front + rear strut bars
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-ATR downpipe
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-15Gs, 3sx aluminum pulley, FMIC, SAFC, walboro pump, EVO 560ccs, and Meth Injection Kit all waiting to go in shortly.

Your 1996 Mitsubishi 3000GT VR-4 is the 92nd out of the 315 that were made that year. Only 21 of which are exactly identical.
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Old 02-01-2005, 11:50 PM   #6
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Re: Driveshaft Question

They also flex when put under stress, therefore taking some of the stress off the transfer case.
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A few "bolt on" mods, a couple "cut, smash, hammer, weld, etc" mods, and a couple "why the hell do I need this/what the hell is this" weight reductions.
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