Lighter Pulley Kit + Tailshaft

[justinfox]

Hey guys.

I searched hard and found a lot of people who were interested in the Greddy Pulley Kit (standard direct swap sizes) as well as a lighter, carbon tailshaft but no reviews at all. A hell of a lot of speculation and physics lessons were found, but no one actually left any real reviews.

I've linked up the parts in question below. Would appreciate your comments, experiences, opinions. I'm sure some of you out there would be keen on these items as well.

GREDDY WATER PUMP, ALT AND POWER STEERING PULLEYS MADE FROM DURALUMIN (A2017) ANNODISED BLUE FOR R32, 33,34 GTR. LESS THAN HALF THE WEIGHT OF FACTORY STEEL ONES FOR IMPROVED THROTTLE RESPONSE.

UAS ONE PIECE TAIL SHAFT FOR NISSAN SKYLINE GTR. LESS DRIVE TRAIN POWER LOSS, MORE RESPONSIVE - LESS LAG.

WEIGHS ONLY 9KG COMPARED TO FACTORY ITEM AT 14.5 KG

SUITABLE FOR R32 AND R33 GTR

[blk180]

i Belive GTRsean has one of those tailshafts. maybe PM him and see what he thinks of it.

[GTR1993]

I was talking to a guy that makes tailshafts in Adealide. He was telling me the longer you make a shaft the less rpm you can spin it at, when you are at around 1.3 meters you will be lucky to get 5000 rpm out of it so thats why you go multiple peice. So it may not be that smart on going to a single peice shaft depending on RPM and length.

[giant]

i run a one piece carbon tailshaft, and it is almost half the weight and we spin it to 8200 rpm also its rated to 1500 hp.

cheers russ

p.s we also dont have problems anymore with driveline shudder from the centerbearing on hard launches with the carbon one piece shaft.

Edited January 31, 2007 by giant

[JAGR33]

i run a one piece carbon tailshaft, and it is almost half the weight and we spin it to 8200 rpm also its rated to 1500 hp.

cheers russ

p.s we also dont have problems anymore with driveline shudder from the centerbearing on hard launches with the carbon one piece shaft.

Hey Russ, where did you get this tail shaft from?? Local or overseas??

[GTRsean]

Hey. Thats my tailshaft in the first pic! Still going strong and it was balanced to 300klm/h.

[GTRsean]

I was talking to a guy that makes tailshafts in Adealide. He was telling me the longer you make a shaft the less rpm you can spin it at, when you are at around 1.3 meters you will be lucky to get 5000 rpm out of it so thats why you go multiple peice. So it may not be that smart on going to a single peice shaft depending on RPM and length.

GTR shafts are shorter than GTS-Ts due to transfercase on back of gearbox so they aren't that long.

[justinfox]

I'm super keen on a carbon one. Russ please let us know where you got yours from. I have not got a reply yet form the company in the USA.

[benm]

Their was a great thread on www.gtr.co.uk about carbon tailshafts but stuffed if I can find it.

[justinfox]

benm. Yup I read all the way through that. Turns out the American company makes them for Mines and Trust/Greddy. Still no response from them though.

http://www.acpt.com/driveshaft/driveshafts.html

[Beer Baron]

there is a big thread on them to on SAU in Forced Induction somewhere.

[blk180]

Yep i was going to link it but Justin has already posted in there so i guess he's seen it. think gaint said his was 1.8-2k.

[justinfox]

Got a mail back from ACPT and my carbon shaft is on order!

ACPT driveshaft is $1400.00 for the version 1 (800 ft/lbs of torque) plenty for my circuit car, they also make a bigger one, slightly heavier and more expensive, for drag cars with up to 2000ft/lbs of torque. $200-250.00 for overseas shipping.

I'll let everyone know how it goes!

[Beer Baron]

nice. so basically $1650 and you're away. I'll be very keen to see what you think of it.

[benm]

Make sure you do before and after dyno results

[Fixxxer]

Any weight loss of a rotating part will be beneficial.

Still, from what I understand, weight is only one factor in the equation, the other is the diameter/distance that weight is located from the source.

So a lighter tailshaft may be offset by an increase in diameter of the shaft, i.e., standard 2.5" diameter standard shaft versus a newer lighter but 3" diameter shaft. I guess for tailshafts it would only be a slight increase in diameter and probably wouldn't have much effect going to a larger one..... but in terms of flywheels this is the case.

Fixxxer

[Mr. Keets]

dman it not another part to add to the "rebuild box"

[justinfox]

I doubt it will make more power, it's more for response and weight savings no?

[giant]

Hey Russ, where did you get this tail shaft from?? Local or overseas??

hey mate as linked below

http://www.acpt.com/driveshaft/driveshafts.html

just dont hold you breath on there response times toook them awhile to get mine out to me , but as very happy with the product and has never failed even with heaps of abuse, no launch shudder ever!!!

and 6 odd kilos lighter

cheers russ

[giant]

yeah justin rev resonse , mainly it takes a large amount of rotating wait out. and gets rid of shuddering two piece setups