Driveshaft options? - TriStateTuners.com :: Home of Tristate Auto Enthusiast

CHAOS · 05-13-2007, 12:30 PM

I've been reading up on the options and such for replacement driveshafts... and the options are basically between two different materials... carbon fiber and aluminum...i figured i'd post up the info ive gathered and see what others have to say on this mod

Material: Carbon fiber:
cost: ~$1150
weight: 13.5lbs
problems: very little known issues besides harmonic vibration on some cars

Material: aluminum
cost: ~ $460
weight: 12.5lbs
problems: need to modify (read: bang with hammer) your floorpan

i personally like the carbon one despite its cost strictly because i dont need to modify anything... lets hear some more opinions!

**TROLL** · 05-13-2007, 12:31 PM

i've heard of fitment issues with any one piece driveshaft... which was enough to keep me away, although i think the aluminum driveshaft is very appealing for the price otherwise.

what companies are you referencing with the pieces listed above?

Honest_Bob · 05-13-2007, 12:47 PM

Screw beating the floor pan to get the aluminum one to fit. Carbon all the way!

CHAOS · 05-13-2007, 12:47 PM

the carbon one is offered by ACPT but ive heard braille is offering one now as well... and the aluminum one comes from The Driveshaft Shop

MuddyREX · 05-13-2007, 07:25 PM

How much does the stocker weigh?

redwrxwagon02 · 05-14-2007, 09:52 AM

uh-lot

see ok id go cf
is sooo tough and i know acpt will guarentee there stuff for life
and its definately not worth getting mad at your floorpan
substantial gains can be had by lightening that thing up it weighs alot
one sti owner wrote a review i think on nasioc and said he felt a huge difference like 30 whp
and if you can feel a difference its definately a substantial gain

CHAOS · 05-14-2007, 09:56 AM

i believe its been weighed at 29 lbs.

as far as HP gains... its not a certain number.. its a percentage gain.. so the more you add power mods... the bigger gain youll make... and its very similar to the percentage gain you would make with a lighter flywheel.

MuddyREX · 05-14-2007, 09:59 AM

So you're removing about 1/2 the weight of the shaft. I can see how that would make a difference. I can't justify 2 1/2 the cost for carbon fiber though.

CHAOS · 05-14-2007, 10:14 AM

well the carbon fiber vs. aluminum argument is a strong argument for both sides... as far as differences in cost, torsional riggidity, etc etc

06evors · 05-14-2007, 12:45 PM

I think there are better ways to lighten your car and better parts to put your money towards my .02.

CHAOS · 05-14-2007, 01:00 PM

thats fine. but this thread is about driveshafts.

Verocious · 05-14-2007, 03:07 PM

I prefer the alum shafts over the carbon fiber ones. With the alum shafts you get about 13-15* of deflection out of them, which will help reduce driveline wear and tear. I dont think the carbon shafts will deflect at all. The last few alum shafts I put in, I only had to remove some of the sound deadner from the tunnel to get it to clear.

I would get the alum shaft over a carbon one and then put the extra money twords a set of light wheels and you would most likely end up with a better net weight loss in the drivetrain over just a carbon shaft.

Andy

CHAOS · 05-14-2007, 03:28 PM

thats a good point.

DaveSTi · 05-15-2007, 09:42 AM

http://www.iwsti.com/forums/showthread.php?t=85944

ACPT for $700

SeMaxima99 · 05-15-2007, 09:46 AM

aluminum is for beer cans. Something ive learned about driveshafts from another forum. But it wasnt for subaru so i dont know how relavent it is.

Verocious · 05-15-2007, 10:16 AM

Andy put it best.

Jake

05-13-2007, 12:30 PM	#1
CHAOS TST Ruined My Life! Banned Join Date: Jun 2006 Member #2120 My Ride: 1984 Cadillac Brougham iTrader: (1)	Driveshaft options? I've been reading up on the options and such for replacement driveshafts... and the options are basically between two different materials... carbon fiber and aluminum...i figured i'd post up the info ive gathered and see what others have to say on this mod Material: Carbon fiber: cost: ~$1150 weight: 13.5lbs problems: very little known issues besides harmonic vibration on some cars Material: aluminum cost: ~ $460 weight: 12.5lbs problems: need to modify (read: bang with hammer) your floorpan i personally like the carbon one despite its cost strictly because i dont need to modify anything... lets hear some more opinions!

05-13-2007, 12:47 PM	#3
Honest_Bob TST Ruined My Life! Join Date: Dec 2005 Location: Easton, PA Member #1179 My Ride: 05 WRX Wagon iTrader: (2)	Screw beating the floor pan to get the aluminum one to fit. Carbon all the way! __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

05-13-2007, 07:25 PM	#5
MuddyREX Tri-State Post Whore Join Date: Jan 2005 Location: Perkasie, PA Member #82 My Ride: 02 Subaru WRX iTrader: (4)	How much does the stocker weigh? __________________ The original, since 1979. <---- 190,000 mile WRX - Gone To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

05-14-2007, 09:52 AM	#6
redwrxwagon02 Tri-State Post Whore Join Date: Mar 2007 Member #4044 iTrader: (0)	uh-lot see ok id go cf is sooo tough and i know acpt will guarentee there stuff for life and its definately not worth getting mad at your floorpan substantial gains can be had by lightening that thing up it weighs alot one sti owner wrote a review i think on nasioc and said he felt a huge difference like 30 whp and if you can feel a difference its definately a substantial gain __________________ oh thanks!

05-14-2007, 09:59 AM	#8
MuddyREX Tri-State Post Whore Join Date: Jan 2005 Location: Perkasie, PA Member #82 My Ride: 02 Subaru WRX iTrader: (4)	So you're removing about 1/2 the weight of the shaft. I can see how that would make a difference. I can't justify 2 1/2 the cost for carbon fiber though. __________________ The original, since 1979. <---- 190,000 mile WRX - Gone To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

05-14-2007, 09:56 AM	#7
CHAOS TST Ruined My Life! Banned Join Date: Jun 2006 Member #2120 My Ride: 1984 Cadillac Brougham iTrader: (1)	i believe its been weighed at 29 lbs. as far as HP gains... its not a certain number.. its a percentage gain.. so the more you add power mods... the bigger gain youll make... and its very similar to the percentage gain you would make with a lighter flywheel.

05-14-2007, 10:14 AM	#9
CHAOS TST Ruined My Life! Banned Join Date: Jun 2006 Member #2120 My Ride: 1984 Cadillac Brougham iTrader: (1)	well the carbon fiber vs. aluminum argument is a strong argument for both sides... as far as differences in cost, torsional riggidity, etc etc

05-14-2007, 12:45 PM	#10
06evors Tri-State Addict Join Date: Apr 2007 Location: Warminster, PA Member #4563 My Ride: 00 MX-5 LS iTrader: (2)	I think there are better ways to lighten your car and better parts to put your money towards my .02.

05-14-2007, 01:00 PM	#11
CHAOS TST Ruined My Life! Banned Join Date: Jun 2006 Member #2120 My Ride: 1984 Cadillac Brougham iTrader: (1)	thats fine. but this thread is about driveshafts.

05-14-2007, 03:07 PM	#12
Verocious Vendor Join Date: Mar 2007 Location: Wilmington, DE Member #3950 iTrader: (0)	I prefer the alum shafts over the carbon fiber ones. With the alum shafts you get about 13-15* of deflection out of them, which will help reduce driveline wear and tear. I dont think the carbon shafts will deflect at all. The last few alum shafts I put in, I only had to remove some of the sound deadner from the tunnel to get it to clear. I would get the alum shaft over a carbon one and then put the extra money twords a set of light wheels and you would most likely end up with a better net weight loss in the drivetrain over just a carbon shaft. Andy __________________ Verocious Motorsports 818C S. Heald St. Wilmington, DE 19801 p: 302.472.8888 (local) p: 877-VMS-1320 (toll free) e: To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. Shop online at: To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

05-14-2007, 03:28 PM	#13
CHAOS TST Ruined My Life! Banned Join Date: Jun 2006 Member #2120 My Ride: 1984 Cadillac Brougham iTrader: (1)	thats a good point.

05-15-2007, 09:42 AM	#14
DaveSTi Tri-State Post Whore Join Date: Mar 2006 Location: Charlotte Member #1591 iTrader: (0)	http://www.iwsti.com/forums/showthread.php?t=85944 ACPT for $700 __________________ Member Journals: To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. / To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. / To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. / To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. / To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. / To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

05-15-2007, 09:46 AM	#15
SeMaxima99 Tri-State Post Whore Join Date: Feb 2006 Location: Broomall Member #1486 iTrader: (0)	aluminum is for beer cans. Something ive learned about driveshafts from another forum. But it wasnt for subaru so i dont know how relavent it is.

05-15-2007, 10:16 AM	#16
Verocious Vendor Join Date: Mar 2007 Location: Wilmington, DE Member #3950 iTrader: (0)	Andy put it best. Jake __________________ Verocious Motorsports 818C S. Heald St. Wilmington, DE 19801 p: 302.472.8888 (local) p: 877-VMS-1320 (toll free) e: To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. Shop online at: To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

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