Jump to content
SAU Community

Is My Timing Belt On The Way Out?

brodie_84

By brodie_84,
in General Maintenance

 Share

Recommended Posts

brodie_84 Contributor

brodie_84

Posted
Posted

I just picked up an R33 gtst s2. It needed a new diff and radiator so I've just finished replacing those and today I just noticed a slight whirring noise, which I think is coming from the timing belt cover.

Has anyone had this noise before? It only does it just off idle then it's fine after that. I've already ordered a new timing kit and water pump today which I'll fit on Friday, and hopefully that fixes it.

The motor has done just over 100,000kms so I'm gonna play it safe and replace the belts and pulley, and water pump while I'm at it.

Link to comment
https://www.sau.com.au/forums/topic/325911-is-my-timing-belt-on-the-way-out/
Share on other sites
Kinks Grand Master

Kinks

Posted
Posted

100k service = change timing belt. you're due so change it, interference motor means things get ugly if it snaps.

aftermarket belts eg gates make some noise anyway, but if yours hasn't been done and it's the OEM belt then it could be a warning sign that you should change it!!

i never heard a peep out of my OEM belt, got a gates on there now and it does make a slight whirr just off idle but they often do that.

brodie_84 Contributor

brodie_84

Posted
  • Author
Posted

Yea I'm prayin it's only the timing belt. I bought the car off a mate and he was straight up with the few things that were wrong with it and he did mention the timing belt hasn't been done yet. The motor sounds perfectly smooth, only the slight whirr just off idle. My parts should get here Thursday, so I should have it all completed by Friday arvy. I'm massively keen to get it on the road but don wanna playin Russian roulette n end up blowin the motor by drivin it with the old belt.

Andy R33 GTS Apprentice

Andy R33 GTS

Posted
Posted

Hey guys, I am having the same issue ....HOWEVER,

my 96 R33 GTST (100km covered), was due for a timing belt, especially as I only just got the car a few months ago and didn't know if its been done.

I bought a timing kit, had it fitted, and within 2 weeks I am getting a whirr/growl from top of timing cover,

the noise only happens a few hundred RPM over idle and goes when revved higher, I have noticed that the growl goes once its warm (after a few mins) but have also notice when quite hot... I am getting a high pitched groan/moan from the same area.

Is the idler bearing shot? or tensioner? or is it just a noisy belt?

My other concern is that the tensioner has been set too tight and its worn the bearings ... is this possible?

Note, The noise wasn't there before the timing belt was done. :down:

Muchly appreciated if anyone else can shed some light?

Andy

Andy R33 GTS Apprentice

Andy R33 GTS

Posted
Posted
New belts usually do that before theyre settled in, If it's a Gates timing belt, completely normal, might need retensioning down the track if it still does it

So a little growl just above idle for a few minutes is normal?

will it quieten down with age? Is this the same for the hum/whine when it is warm?

Thanks

brodie_84 Contributor

brodie_84

Posted
  • Author
Posted

so, i changed the timing belt yesterday and changed the tensioner and idler pulley while i was at it. The water pump was weeping out of the 'tell tale' hole so i replaced it as well.

It would have been approximately a 4 hour job, but my mate that was helping me accidently snapped off one of the 6mm bolts that holds the top timing cover on. Then it turned into a big mission to find a small enough ezi-out kit in town. And in the end I ended up drilling out the bolt and tapping it to an 8x1.25 hole instead and now its all sweet.

Anyways, now the new belt is fitted, the whirring noise that was there before, is now completely gone :-)

There is now the higher pitched whining/whirring noise... which is obviously characteristic of a new timing belt until it runs in.

But other than that, everything looks fine.

  • 4 weeks later...

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

    • The king 2.0
      Nissan fuga 450gt android screen

      By The king 2.0 · Posted

      It is a kunfine Android screen . Does anyone know the wirering diagram of the fuga ??
    • Nizzy_R34
      r34's love to squeal

      By Nizzy_R34 · Posted

      just an update to this, poor man pays twice  Tried sanding down the pulleys but it didnt do the trick. Chucked another second hand alternator in the na car which I got for free off my mate and its fixed the squelling. Must have been unlucky with the bearings.    As for my turbo car, I managed to pick up a cwc rb alternator conversion bracket + LS alternator for 250 off marketplace, looked to be in really good nick. Installed it , started the car and its not charging the battery.... ( Im not good with auto elec stuff so im not sure if this was all I needed to do but I verified such by using a multimeter on the battery when the engine was running and I was only getting 12.2v )   I had to modify the earth strap for the new LS alternator , factory earth strap was a 10mm bolt which did not fit the bolt on the LS alternator which was double the size so I cut it off , went to repco bought some ring terminals that fit, crimped it onto the old earth strap and bolted it up to the alternator , started the car and same issue. Ran like shit and was reading 12.2 at the battery.  For a "plug and play" advertised kit thats not very plug and play but alas.  My question is , am I missing something ? Ive been reading that some people recommend upgrading the stock 80 amp alternator fuse to a 140 amp but I dont see how that would stop the alternator charging especially at idle not under load.  Regardless ive pulled it out and am going to get it bench tested by an auto elec tomorrow but it would be handy to know if ive missed something silly or have done something wrong.   
    • Duncan
      Engine sputter

      By Duncan · Posted

      My wild guess is that you have popped off an intake pipe....check all of the hoses between the turbo and the throttle for splits or loose clamps.
    • Duncan
      S1 Autech 260RS Wiring Diagrams

      By Duncan · Posted

      Awesome, thanks for sharing!
    • Duncan
      Nissan fuga 450gt android screen

      By Duncan · Posted

      To provide more specific help, more information is needed. What Android screen? What is its wiring diagram? Does the car's wiring have power at any required BAT and ACC wires, and is the loom's earth good?
×
×
  • Create New...