Drivetrain Whine

[CeJay]

Had a search for anything on this and couldn't find anything that was related to my issue.. Have an r32 gts4 4 door, just had the gearbox rebuilt and a one piece tailshaft put in the car. It has been fine for a few thousand k's. Today on a trip up to sydney I noticed a drivetrain whine coming from the car at around 100-110km's, it is not really a vibration. Seemed to get worse the faster it went. Also the gearstick felt warm. Through some trial and error, it appears it isn't related to what gear it's in, more the rotational speed.

I'm starting to suspect it's the tailshaft. Just wanted to know if anyones had a similar problem before? Should the tailshaft have been balanced when it was put on? Had the tailshaft made at one shop, and put in at the gbox place.

[Spurdo]

any and all rotating parts u get made should have been balanced during manufacturing.. if not then someone didnt do their job. how warm exactly is the gear stick? it shouldnt be much more than room ambient temp really. mine used to get warm when i had bad bearings in the gearbox that generated excess heat.. so if its getting warm you may have something else causing excess friction. im pretty sure some whines are fairly acceptable.. after my gbox rebuild it whines a little bit in gear but i dont get the excess heat or anything anymore. no matter what you do you'll pretty much never rebuild it to the exact standard the factory did.

are you able to say with more certainty where the noise is coming from exactly? maybe take the boot off from around the bottom of the gearstick and then remove the rubber insulator, you should be able to see the tail shaft and the ground beneath it. go for a drive like that and that may give you a better idea where its coming from

[wlspn]

Sounds like it could be a diff noise...

[CeJay]

worn left rear wheel bearing was the problem.

[hnito2]

i was going to say diff... but wheel bearing would deff do it!! prob pay to check all of them....