Jump to content
SAU Community

Recommended Posts

Hi all, it turns out that I need a rear diff for my 1990 R32 GTR, do they come in different ratios or are they all 4.11?

Prefer local but interstate is fine if prepared to freight.

My rear diff is making what sounds like front pinion bearing noise, no change under acceleration or backoff, just increases with road speed.

Is this common with GTR's? I thought they had a very strong drivetrain, but I guess no diff is invincible.

If anyone has one for sale, either pm, reply or call me (Tony) on 0421985762.

Link to comment
https://www.sau.com.au/forums/topic/318632-r32-gtr-rear-diff-wtb-canberra/
Share on other sites

r you sure its not a wheel bearing? the noise should change on decel if its the diff.

Hi all, it turns out that I need a rear diff for my 1990 R32 GTR, do they come in different ratios or are they all 4.11?

Prefer local but interstate is fine if prepared to freight.

My rear diff is making what sounds like front pinion bearing noise, no change under acceleration or backoff, just increases with road speed.

Is this common with GTR's? I thought they had a very strong drivetrain, but I guess no diff is invincible.

If anyone has one for sale, either pm, reply or call me (Tony) on 0421985762.

I was always taught that diff noise will only change if it affects the crown wheel and pinion and bearings, the pinion is not directly load affected, but if that is incorrect I am always open to logical explanations.

I have had the car on four stands and there is no play in either of the wheel bearings and neither of them feel rough, although both wheels are fairly hard to rotate, what I mean is that they don't turn freely like other LSD diffs I have owned, is this normal for GTR's?

I first noticed this when I had to push the car in neutral (handbrake off) and noticed how hard it was, certainly more rolling resistance than I thought was normal.

Is this a clue?

I have also had the wheels and calipers off and checked handbrake adjustment and they seem fine.

Could it be a centre bearing?

First of all, thanks for the replies and PM's, and your right Trozzle, I'm keen to stay with the original ratio because I don't want to change other ratios to match, my first post was probably a little confusing, the reason I mentioned ratios was to make sure that I didn't buy the wrong diff for my car, not to look at options for different ratios.

I now believe all R32 GTR's have a 4.111 to 1 ratio diffs so it was just my lack of knowledge on the subject that caused me to ask.

Regards, Tony

If it was me, i'd be going to one of the transmission places to get it checked out first, there's a couple in Phillip I think.

If it turns out to be the diff you are probably better off getting yours rebuilt, swapping your old diff for someone else's old diff probably isn't the greatest idea.

Cheers,

JD

Agreed JD, I would prefer to have it rebuilt by a professional as well, but if I can buy a good s/h diff then I can send it to a "reputable" rebuilder to have it checked/rebuilt properly, so that the whole process only has to happen once rather than fit a s/h diff only to find out that it is farked and have to pull it out again, but obviously I want to start with a diff that does not require a full rebuild if possible.

It is easy to say "just get it rebuilt" but I have a problem with the "open cheque book" approach to owning a GTR.

This is a 20 year old car and a perfectly good 20 year old s/h diff is ok with me as long as I ensure that its ok before swapping it.

I am a big believer in "if it aint broke, dont fix it" way of doing things and since this car is not driven hard, a good checked s/h diff will do just fine.

Having said all this, I will also make sure that it is in fact the diff making the noise before pulling it out, other things such as centre bearing, wheel bearings (fairly sure this is not the cause) are eliminated by a reputable mechanic first.

It just seems to me that it is the diff, but I could be wrong.

Regards, Tony

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Seat of the pants assessment of the new intake: The car is way less "doughy" when hitting the loud pedal, especially off idle when stopped or in traffic, I did use a cheapo lazer thermal thingo to measure the temp around where the pod filter got its air, it was between 55 - 60°C, in saying this the car was shut off and not moving, so the OEM intake pipe was not supplying any fresh air to where the pod was when the car was at least moving A weird bonus was induction noise on the throttle in the cabin increased a bit,  I was worried that I was actually going to lose some of that induction noise I love so much, outside though, when I got the daughter to do a WOT drive by pass for me, the induction noise has increased alot when on the throttle, not quite ITB doort, but well up there I'm extremely happy with the results and have been exploring the country roads in the region  As for house mods: 1.New front fence is up and is awesome, it really upgraded how the joint looks from the street, and the added security is nice 2. Electricians have replace some interior lights, and with more lighting in the garage, a few new motion detecting lights out the front above the garage, front room, and at the front door, which I have already found heaps helpful coming and going, also now has fancy pants CCTV all round the house The only hold point for power though is the solar and batteries due to supply issues, although this will happen over the next few weeks 3. I have done a heap of landscaping out the front and I'm almost ready to do a new small retaining wall with some nice blocks to replace the brick and cemented in rocks around the raised garden beds cemented in river stone "was the fashion at the time" the house was built. I currently have a pallet of retaining wall blocks and 2 bulka bags of 20mm blue metal to replace the wood chip that is in the raised garden beds around the house 4. I now have 3 big raised garden beds for out the back to grow some vegetables, about 70cm high, 200cm long and 100cm wide 5. My 2 compost bins are already pretty full with brown, green and kitchen waste from the landscaping I'vedone so far, but they will probably take a few months to break down, so anything else that gets chopped, trimmed, and kitchen waste will just start filling the base of the raised garden beds to about 30cm before I start throwing 40cm of good compost, and stuff, for the vegetables to grow in, I'll need a few ton of compost and soil, but the local supplier can sent me bulka bags of the stuff Basically the logs, wood chips and a few strategically placed rocks for drainage, will give the beds some good organic materials down low to break down over time, and they will hold moisture during the warmer months to save the water in my big arse water tank if we don't get alot of rain So, all in all, the car and house mods are going well, and I'm really enjoying being retired, I sleep in too 0700 and slowly plod around inside until I feel like actually doing anything, and only work in the yard for as long as want, which has actually been alot over the last few weeks,  although when you look at it, it seems that not a huge amount of work has been done,  until I look at the before I started the work pics Happy days and good times indeed 
    • hahaha yeah. Plan is to get side skirts and probably just rear pods. But going to do them one-by-one. I've got a set that I really like from RHDJapen, but that one isn't shipped to AU. So need to find someone who can get it for me
    • Here's an idea, answer the questions I asked you as they are trying to work out WHY the LSD will be binding up in a straight line.
    • You haven't driven many modern cars then have you? Most of them have sfa steering feel with their stupid electric bullshit steering systems.
×
×
  • Create New...