Travb2007 Posted January 26, 2009 Share Posted January 26, 2009 Ok this sound came on suddenly and here are some important facts: Does not happen at idle Does not happen while revving in neutral Does not happen with Clutch pedal depressed and coasting at 40 mph Does Happen when slowing down with Clutch pedal released. Does Happen when moving through gears Only seems to happen when there is engine power to drive wheels (gear selected and accelerator depressed. NO VIBRATION IN THE SHIFTER! Did see a puddle of oil under car Engine oil is black not even remotely tan or golden colored. oil smelled like gas and oil... Parked car in dry spot and left it and got nothing no oil no nothin on the ground. Car: 1977 Datsun 280z w/ Wide ratio 5spd Transmission running Synthetic blend oil in the tranny and Castoral GTX in the engine with a (god forgive me) FRAM oil filter. Besides the oil filter what needs to be changed to stop this whine>? Quote Link to comment Share on other sites More sharing options...
zzzzed Posted January 26, 2009 Share Posted January 26, 2009 gears could be worn Quote Link to comment Share on other sites More sharing options...
Travb2007 Posted January 26, 2009 Author Share Posted January 26, 2009 odd thing is this was a leave car in driveway for 20 min go back out to leave again and WOW noise wtf? Quote Link to comment Share on other sites More sharing options...
zzzzed Posted January 26, 2009 Share Posted January 26, 2009 how long ago did you put the gear box oil in? Quote Link to comment Share on other sites More sharing options...
Travb2007 Posted January 26, 2009 Author Share Posted January 26, 2009 maybe less than a month ago maybe the 3rd? 80 90 wt Quote Link to comment Share on other sites More sharing options...
MoNkEyT88 Posted January 26, 2009 Share Posted January 26, 2009 Perhaps the backlash on the rear pinion and ring gear are not correct. Quote Link to comment Share on other sites More sharing options...
Travb2007 Posted January 26, 2009 Author Share Posted January 26, 2009 how would that have came about and how do I fix that? Quote Link to comment Share on other sites More sharing options...
Travb2007 Posted January 26, 2009 Author Share Posted January 26, 2009 plus with no power to the transmission the car is silent Quote Link to comment Share on other sites More sharing options...
naviathan Posted January 26, 2009 Share Posted January 26, 2009 You've got a couple of problems it sounds like. Change the oil, O2 sensor and clean up the plugs (probably fouled). Check the throw out bearing and the clutch. Make sure everything is in place spins free. Quote Link to comment Share on other sites More sharing options...
Travb2007 Posted January 26, 2009 Author Share Posted January 26, 2009 yeah already changed o2 and sparks (fouled all to ♥♥♥♥ after a 6hr idle dont ask) but wouldnt the throwout bearing make noise in neutral because I can rev in neutral and it dosnt make the whining/growling sound in the video. Quote Link to comment Share on other sites More sharing options...
Travb2007 Posted January 27, 2009 Author Share Posted January 27, 2009 OK maybe a better description of the sound is it sounds like it is the reverse gear whine only in all the gears Quote Link to comment Share on other sites More sharing options...
ModernS30 Posted July 2, 2009 Share Posted July 2, 2009 You have LSD, Rebuild it, lmao, or get a new one, sounds like a rear diff locking problem, just get a new lsd or rebuild it. Your a drifter, its probably worn out Quote Link to comment Share on other sites More sharing options...
240zdan Posted July 2, 2009 Share Posted July 2, 2009 impossible to tell in the vid but from the description it sounds like diff backlash or worn diff. check to see if u have any play on the inputshaft off the diff i know i have some and i get a fair bit of whine under acceleration. the only solution is to replace the diff and see if the problem goes away. also make sure nothing thats connected to the engine is touching the body such as exhaust, gearbox, etc... as this can amplify the normal sound of gears and bearings drastically. Quote Link to comment Share on other sites More sharing options...
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