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Make me the third. Mine whines when coming off throttle or rolling in neutral. Fairly annoying, thought of just buying a second hand diff and housing and swapping it over. But then how do I know the next one wont do it too. From what I've been told they can whine if the gears dont mesh together properly. So if the gears are worn there is play in the diff, hence it whines when not accelerating. I've been thinking of trying a different oil. might help a little. Any thoughts????

i got the same problem. As the speed increases the whine gets louder. I got myself another diff for $300. Havnt put it in yet, but wen i get the time ill put it in, and hopefully all works out, and i refilled the new diff with penrite diff oil. I heard that aint bad either.

Rip the diff out, get the bearings replaced and the crown wheel/pinion checked and the clearance adjusted.

Done.

how much would that cost to get a mechanic to do it?

also how much do u think it would cost if i rip the diff and send it to the mechanic?

cheers

Most likley they will charge per hour.. Around 75 bucks an hour by most mechanics..

Maybe worthwhile if you bring your car into the shop and let them check it out and rip it apart..

Let them find the problem first, and then go from there.. Could be just a simple fix..

For a complete reco for the diff in my R31 skyline (bearings, seals, crownwheel and pinion) and removal and fitting was it was $950. I am kicking myself for not doing it.

It is actually quite a easy job to reco a diff if you have a basic knowledge of tools. The only special tool you need is a dial indicator to do the back lash and a oxy torch to heat the crownwheel up to put it on the diff centre. You will also need a torque wrench to test the limited slip diff. You will also need to mesh the diff properly, that info can be found in those gregories car manuals or on the internet.

yeah. ive got the same issue.

i thought id try to launch my gtr with a nismo tripple.

it didnt like it much. now it whines lol. not bad. but coz ive got a solid mounted subframe it makes the noise all that much more louder

so yeah. r200 diff reco.. how much??

taking the diff out isn't that hard. unbolt the drive shafts, unbolt the shaft coming from the gear box. and then there are two bolts at the front to remove, and i think 2 or 4 on the back. For $950 you could buy a 2-way, or 1.5-way.

for a gearbox shop to just have a look/listen they probably wouldn't charge you. but i spose different places may charge. anyone recommend a gearbox/diff shop? in brisbane

my 31 diff whined, as they do, especially after a number of skidpan days.

used synth fluid and some diff addative (lucas i think) from supercheap, and it was sweet.

addative is cheaper than a new diff. I had a 2nd hand reconditioned LSD centre put into my 31 for $500.

just keep a spare diff on hand.....

sorry for the stupid question

but would it still be alrite to use it at track days and stuff... coz its something i dont want to upgrade/repair yet until i decide what i want to do with it? rebuild it or go mechanical 1.5/2 way

  • 3 weeks later...
yeah. ive got the same issue.

i thought id try to launch my gtr with a nismo tripple.

it didnt like it much. now it whines lol. not bad. but coz ive got a solid mounted subframe it makes the noise all that much more louder

so yeah. r200 diff reco.. how much??

Dave

have u got a quote for it yet? if you did where abouts did u go?

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