Jump to content
SAU Community

R32 Gtr Gearbox/diff? Noise On Deceleration Above 80km/hr

Skizza_32GTR
 Share

Recommended Posts

Skizza_32GTR Rookie

Skizza_32GTR

Posted
Posted

Hey guys, im new to the forums here, i recently swapped my Evo 6(dont judge me lol) for a r32 GTR.. amoung the list of stuffed needed to be repiared is this wierd sound i can hear when above 80km/hr now this noise is only on deceleration or when coasting with very light throttle..no other time, It sounds like a dry bearing/ metal guide grinding...Now i have checked gearbox and diff fluid and they are all good, Checked to make sure no guides are rubbing like exhaust and tailshaft and i cant see anything...

This noise is not everytime eather most of the time but not every.. now if i put the clutch in while coasting or decelerating the noise goes away? clutch was done 2months ago with a heavy duty unkown brand as ABS mechanical did it which was before i got the car, receipt jsut says Nissan clutch (lol)

I have no idea what it could be, ive been doing alot of reading and some one will say rear output bearing, then others say input bearing and could be crown and pinion bearing in the diff...where should i start??

Skizza_32GTR Rookie

Skizza_32GTR

Posted
  • Author
Posted (edited)

Ok last night i fully replaced the oil on the gearbox, and i found a metal plate attached to the magnetic drain plug... Harts transmission in brendale has told me this part is NOT important as it is only designed to slow the oil down under hard breaking and fast accelerating, I was thinking hmm ok then why do they put it in there then??.. but anyway the noise is still there, I have been reading that the brake pads can cause a similar rattling noise to what i am hearing? any1 heard of this? I am yet to go on the high way yet to see if the rattle is still there under light braking while coasting, will post back once i have done so.

Edited by Skizza_32GTR
  • 1 month later...
BK Grand Master

BK

Posted
Posted

Dude I had something very similar in my R32 GTR with over 500rwkw. Thought it was gearbox. The noise would go away with the clutch in and on deceleration. You know what it was ? My front diffs' crown wheel and pinion gear were totally rooted. The gears were that sharp you could shave with them. Have a look at your front diff mate, put the car on the hoist and you'll pick it. I have one here if needed too.

Bayside Blue R34 GTV Collaborator

Bayside Blue R34 GTV

Posted
Posted

lol, i remember when we had a 600hp r33 gtr at the shop had similar problems and it turned out to be the crown and pinion, they were completely rooted as bk described. have a check, that might ber ur problem.

Zurlox Collaborator

Zurlox

Posted
Posted

not intending to commandeer the thread, but ive had a similar problem occur to me today on my way home from work, but its a squealing noise almost like a break pad rubbing on the rotor, and its on and off as if its a particular section being affected, its only during cruising speeds and deceleration, so not when accelerating and you can hear at low as 10km/h around the street. my car is a r32 gtst, and ive had diff clunking when its being engaged, ever since i put in some alloy rear cradle bushes. am i up for a new diff?

hope you get your car sorted out too Skizza

  • 3 weeks later...
Skizza_32GTR Rookie

Skizza_32GTR

Posted
  • Author
Posted

?hey guys thanks for the info, I have pulled the front diff out and had it checked, and turns out the isnt even 5000kms on it...they said they can still see the forming patterns on the teeth, and the bearings are brand new... I put the car back together and took it to Hart Transmissions in Brendale and they said it sounds like the clutch aswell as tailshaft chatter.. the clutch is a heavy duty exedy or extreame..i think? the clutch cover is a pink colour so i assume its those brands?.. and they tailshaft chatter well i wonder if the rear cradle bushes and rear diff bushes will help solve that? i found out the rear diff mounts are boned there is no rubber left on them and same with the rear cradle, and i also noticed the drivers side CV comming out of the diff is leaking diff fluid and it moves up and down :S which isnt good imo haha. So i think i might have to take the rear diff out and check it over too.. I'll post a update once i find out

Ohh BTW the noise sounds like a BURRRRRRRRR with a squeel to it but now its only from 110km/hr and up most of the time

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      new 1.5 LSD issues/concerns

      By GTSBoy · Posted

      A 1.5 way is a 2 way. It is just a 2 way with a less aggressive ramp on overrun.
    • GTSBoy
      Boost cut after swap(RB25DET NEO) R34

      By GTSBoy · Posted

      The ABS and/or TCS being missing/broken will not cause the engine to misbehave. It just casues CEL to come on and annoy you. The CEL is useless if it is always on, so you have to do the things you have to do to get rid of it, so it can be useful. Being a Stag ECU, then yes, it will not expect TCS to be present. But it will expect ABS to be present and working. You will need to either make the ABS CU talk to the ECU (don't ask me what that will take on an NA R34), and make sure the hardware is working....or, you just need to blank it out in Nistune. Do not persist with the stock ECU. You will just have problems. Gte it Nistuned. Start from there. DO YOU HAVE A BOOST SENSOR? The ECU's boost sensor that it. It is connected to the loom at the rear of the coil cover. Usually rides on the firewall on an R34, but is usually bolted down to a bracket along with all the other crap at the back of the coil cover when a Neo is dropped into another car. If you do not have it, the ECU will shit the bed. So, do you have one?
    • Kapr
      Boost cut after swap(RB25DET NEO) R34

      By Kapr · Posted

      So sadly the fuel pump etc was not it. The pump and filter is new and it is still cutting around 4000 rpm. A read something about ABS/TCS (engine is from stagea and ECU too so no TCS) and i dont know for 100% that my car has ABS. It has ABS "cube" in engine bay but i dont think it works(or at least from my braking experience). Can be something like that?  I will be driving the car next week to Nistune tuner to properly see what is wrong...  
    • JC71
      new 1.5 LSD issues/concerns

      By JC71 · Posted

      the Tomei LSD fluid with lsd kit. frustrated that it was shaking the car to crap and affecting everything else negatively, I pulled the diff last night, and removed the lsd carrier, could not find anything wrong, however it seem to be 100 locked up acceleration, and deacceleration, wondering if they sent me a 2 way not a 1.5??  either way I installed the stock open carrier back in place. test drove everything smooth as butter again. no shake, shutter, random, what felt like clutch slip and grab or drive shaft play, etc. something differently wrong in side the lsd. I might bother taking it apart (if possible) to figure out what's going on inside this carrier, as bought too long ago to return.  only draw back is its back to a one wheel wonder.
    • TurboTapin
      Most women will agree that parking is the most taxing part of driving

      By TurboTapin · Posted

      What a time to be alive!!
×
×
  • Create New...