R31 with diff whine, how long will it last?

[cameron_bol]

I just got my car back from a mechanic after someone interested in buying it booked it in. This mechanic tried to tell me that the diff could last between 500km and 5000km, the buyer was there too by the way. Now my brother also has a skyline, but his diff whine is so much louder than mine, and has been so for far more than 5000km without getting any worse. How can this guy try to tell me that i have as little as 500km left in my diff when I've been told by other mechanics that it could last forever? Is this just a ploy between the mechanic and buyer to get me to lower the asking price? Oh, and how much would a replacement diff?

[JezR31]

have u ever changed the diff oil? it could be a stuffed axle bearing. youll still be able to drive it, its only when it gets really load that i think u need a new diff.

that happened in our r31 at around 670000kms. but we didnt get a new one we just got the old one fixed because they were quiet expensive at the time new.

its now got to 220000kms on the original diff

[cameron_bol]

have u ever changed the diff oil? it could be a stuffed axle bearing. youll still be able to drive it, its only when it gets really load that i think u need a new diff

I haven't personally changed the oil, but I've only owned the car since July last year. I just want to get a realistic idea of how many k's there are left in it.

Edit: I've got 212,000 on the clock by the way.

[R31Nismoid]

The borg warner whines in the R31, nothing at all to be worried about.

dont worry till it blows, then go looking to replace it.

[cameron_bol]

The borg warner whines in the R31, nothing at all to be worried about.

dont worry till it blows, then go looking to replace it.

Yes, but the thing is, when will it blow?

[R31Nismoid]

how long is a piece of string???

seriously, like i said. They ALL whine. Doesnt mean they are going to die at all.

get my drift??

[JezR31]

if you hear the noise while you accelerate and get of the petrol it's usually a gear backlash or worn gear issue. but if its a constant noise its most likely to be a bearing problem.

though yours brother diff sounds like its on the way out.

r31nismoid is right, alot of the r31 diffs have diff whine. its not something uncommen

[cameron_bol]

It tends to happen at about 80km/h+ in 4th and 5th. Doesn't really happen when accelerating.

[R31Nismoid]

i give up

[rsx84]

they all whine so theres nothing you can do short of replacing the whole thing with that from an imported r31 $$$ and it is only around the 80km/h that you'll hear it!

[R31Nismoid]

You cant put the Import Diff into an Oz model Skyline.

[rsx84]

no not just the diff all the other stuff hence $$$ as well a LSD with IRS gear would make it all worth while anyway probibly would'nt want to sell it then!!

[skyguy3804]

I used to have an R31 (for about 8 years!). Since the word GO, the diff had whined ALL the time (as you said, around 80km/h) - was worried about it at first, until I kept getting the same story that THEY ALL WHINE, THEY ALL DO IT. As I said, I had the car for about 8 years and NEVER had any problems with the diff (and yes, I wasn't easy on the car). When I sold it to my parents 2 years ago, it had 365,000 on the clock. They've still got it, the diff still whines, and they have had absolutely no problems with it at all.

[cameron_bol]

Well, the problem is that it has just scared off my most promising buyer so far. He just rang today and told me that he doesn't want to buy it now, specifically because of the diff. There was no convincing him. I really need to sell it, I move down to melbourne for uni 3 weeks. AHHHH!!!

[R31Nismoid]

Well if he knew anything about skylines... your mechanic included, then you'd sell it.

get a new mechanic that isnt an idiot

[cameron_bol]

Well if he knew anything about skylines... your mechanic included, then you'd sell it.

get a new mechanic that isnt an idiot

No no no, it was HIS mechanic.

[myline]

Ive got an R31 on 240K and my diff is fine, the first thig you should do is replace the oil and stop thrashing it if you want to sell it. If it still occurs then pick up a silo diff which is an LSD any way isnt it.

[Dreg01]

Had my R31 for nearly 3 years now, my diff has whined since i got it.

i treat my diff with no respect at all and it is still going.

so go back to that mechanic and tell him hes a bloody idiot and cost you money,

(might make you feel better)