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Nissan GT-R transaxle driveshaft

Posted: Sat Mar 29, 2008 9:27 am
by MALDI
Paul Frère in the May 2008 Road&Track on the Nissan GT-R:

Surprisingly, there is no rigid link between the front engine and the aft transaxle, the latter located forward of the rear-wheel centerline to reduce the car’s polar moment. A carbon-fiber propeller shaft takes torque to the transaxle; another prop shaft brings allotted torque forward to an open front differential. [NB: It's a 4 wheel drive car]

1) Frère clearly doesn't know Alfas which had this 25 years ago (circa 1972).

2) More to the point, how does Nissan do it? Are there guibos or universals? Is the chassis so rigid it doesn't need them?

3) Some people have made carbon fiber driveshafts for transaxle Alfas. Do they use a center guibo?

Inquiring minds want to know!

Posted: Sat Mar 29, 2008 12:34 pm
by sh0rtlife
my guess would be u-joints.....tho id love to see the belly of the beast..if nothing else to see how the drive shafts run without takeing up a crapload of floor space

wouldnt that be fun..the nissan transaxle in a gtv6

Posted: Sun Mar 30, 2008 1:05 am
by Mats
Rear transaxle and 4wd? So two propshafts then? :?

Posted: Sun Mar 30, 2008 1:55 am
by sh0rtlife
yeah thats why i want to see the belly of the beast...

remove the gears and output for the front shaft and use it as a RWD lol

on a quick search i found this
Image

http://www.motiontrends.com/2007/m10/Ni ... GT-R.shtml

OOOO even better
Image

and this...the transaxle...if im seeing and understanding it right...the clutch is on the engine

Image

Posted: Sun Mar 30, 2008 8:02 am
by MR2 Zig
i could be easily wrong here but......that looks like a motorcycle wet clutch at the front of the transaxle in the cutaway. Multi plate looking thing.

Scott

Posted: Sun Mar 30, 2008 8:44 am
by Greg Gordon
The sad thing here is that thing is closer to a modern GTV6 than anything Alfa has built lately. (the 8C does not count due to its price).

Posted: Sun Mar 30, 2008 9:12 am
by Mats
MR2 Zig wrote:i could be easily wrong here but......that looks like a motorcycle wet clutch at the front of the transaxle in the cutaway. Multi plate looking thing.

Scott
I'm guessing that's the DSG unit, there should also be an ITM100 (on demand AWD clutch) in there somwhere to feed the power to the front wheels, unless they have moved to permanent but that sounds unlikely.

Posted: Sun Mar 30, 2008 10:45 am
by MALDI
MR2 Zig wrote:i could be easily wrong here but......that looks like a motorcycle wet clutch at the front of the transaxle in the cutaway. Multi plate looking thing.

Scott
Good eye, it's a rear-mounted twin-plate wet clutch.

This is what the SZ could have become (had Alfa not gone bankrupt! :x )