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does anyone's 5spd stick do this????
Posted 21 July 2004 - 09:21 PM
Posted 21 July 2004 - 09:31 PM
Posted 21 July 2004 - 09:34 PM
Posted 21 July 2004 - 09:39 PM
Posted 21 July 2004 - 09:56 PM
Posted 21 July 2004 - 10:23 PM
Change your fluid to RedLine MT 90. I follow the Nissan 300ZX forum, called TwinTurbo.net, and the same problems you describe have been corrected by just changing the fluid. I've not done it to my 300, since there is nothing wrong with its tranny and its very low mileage, but so many respondents to that forum just rave about the shifting/grinding problems that the stuff cures. Its not cheap, but it certainly would be what I would try if I were in your shoes. Don't take my word for it, though, check out the website I gave above, and search the topics on grinding gears, transmission noises and problems. Good luck!
Isn't "MT 90" GL-4? His trans. requires GL-5.
Posted 21 July 2004 - 10:30 PM
Posted 22 July 2004 - 12:57 AM
Redline works, but doesn't last.
BY THE WAY that sound is the synchromesh teeth bashing into eachother, all the forward cogs/gears are in constant mesh. The synchro teeth are bevelled/rounded to allow for abuse.
Posted 22 July 2004 - 09:57 AM
My regular independent mechanic was informed by the local (apparent) idiot Subaru dealer that the cure for my differetial binding was to put in a quart of GM Synchromesh into my tranny, along with 3 quarts of regular 80w90. "That'll fix it." Yeah....
Anyhoo, after about 3 months of driving with this concoction (which did make the shifting smooth as butter for that period of time) it started to grind, as you describe, going from 1st to 2nd (actually, only after driving for 20+ minutes).
Last month, the correct fix for my binding (new viscous unit) was performed. I am assuming that to do the job, it was necessary to drain the tranny? Basically since then, no more 1st to 2nd grind. I'm assuming that the dealer at my new location used just plain old OEM 80w90. The shifting isn't quite as smooth in all the other gears like it was with the mesh, but it doesn't grind in any gear anymore.
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