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URGENT. NEW GEARSET IN DIFF WHINING ON COAST.

Tech Talk for Nissan owners.

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Posts: 67
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URGENT. NEW GEARSET IN DIFF WHINING ON COAST.

Post by 76patrol »

today i swapped in a new 4.6 ratio into the rear of my troll. all backlash settings were good but on coast it seems to whine loudly. should i be worried? thanks in advance. ray
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76 troll rockin a rb30 gq driveline, rollin on 37's and flexin with a 4 link.

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Yom
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Post by Yom »

yes!!! of course you should be worried!

Pull it apart and check it again. if you can't see what is wrong take it to a specialist diff joint. Slightest fookup and you'll be completely reconditioning it again in no time.
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Re: URGENT. NEW GEARSET IN DIFF WHINING ON COAST.

Post by bogged »

is it a "NEW" gearset, or are they new to you?
if they are old, they may have a shit wear pattern in them
if not, Yon is on the mark.
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Post by BundyRumandCoke »

Agreed, are both crownwheel and pinion new, or at least a matched pair? A new componant and a used one are going to whine like crazy.
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Post by brad-chevlux »

IF your back lash is %100 correct and you still have a whine, then your pinion depth is wrong.
the two pinions should have a the checking depth marked on them.
By comparing the two numbers and the depth shims (i'm not %100 sure how the nissan diff adjust its pinion depth), you can work out how much shim is used to correct for machining tolerance on the carrier and how much shim is there for the pinion.
In doing so you can work out how much shim needs to be there for the new pinion.

Did you check the contact pattern?
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Post by Auto-Craft »

Are they mazziarro italian gearsets ?
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Post by 76patrol »

thanks guys. yes they are antiono gears.? they are both new and a matched pair. i think i will pull it out and take it to a pro.
that f***n hippy in that f*"*""n g60

76 troll rockin a rb30 gq driveline, rollin on 37's and flexin with a 4 link.

buildup at downunder4x4.net
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Post by thelux »

Mate of mine had new gears put in the front of his cruiser when the locker was installed and they used to whine like crazy. Apparently with new gears they haven't 'worn' in and will whine, anyway it went away and is now 100%.
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