New timming belt noise Issues ST204

[BASHOdi]

I've just had a proffesional workshop install a new timing belt and pulleys seals etc (all the stuff you find in a full Gates Kit) and a new GMB water pump , it all runs fine until the engine is at normal running temp then I'm getting a fgrub- fgrub- fgrub- fgrub noise from the timing belt end of the engine , this is not supper loud but obviously something isn't quite right , I can't feel any vibration in the upper timing belt cover that corresponds to this noise , does anybody know what might be causing this noise or have experianced a similar thing ?

I had it back to the workshop and you guessed it--" This noise is normal".

It dosen't do it cold and it didn;t do it before the new belt was fitted.

[allencr]

That noise will happen when a pulley is out of round causing the belt to cycle from tight to too tight or loose to too loose. Re-tighten the belt when it it's at the high point & at its tightest.
Sure it's not coming from one of the others?
Used a piece of hose to pinpoint the source?

[RT104GT]

That noise will happen when a pulley is out of round causing the belt to cycle from tight to too tight or loose to too loose. Re-tighten the belt when it it's at the high point & at its tightest.
Sure it's not coming from one of the others?
Used a piece of hose to pinpoint the source?

I had this on my 3SFE recently and after discussing it with a service manager, the following worked.

1/. Start and run engine until HOT
2/. Removed top engine mount.
3/. Removed rubber grommet in top timing cover.
4/. Turn engine over clockwise until top dead centre.
5/. Loosen the locking bolt on idler pulley.
6/. Turn engine over two full rotations CLOCKWISE (i.e. in the direction it normally turns).
7/. At TDC lock up idler pulley.
8/. Test start and run.
9/. if it still howls a bit do the above one more time.

If it still grubs take top cover off and inspect the belt when running and the aligment and trueness of the cam pulley/pulleys.

Another thing that makes noises in that area is misaligned cam cogs.

Seeing they did it take it back if unsure..


After a couple days mine settled back in, the chamfer and distortion I had made cleaned up and belt is quiet.

S/M said leaving belt too tight too long it will stuff water pump really quickly
and I notice mine now rattles when cold, so my fault.


2 cents.

[BASHOdi]

Thanks mighty RT104GT absolutely sterling advice.

Took it back to the repairers, again, and was told it's nothing to worry about give it a few hundred to settle in etc etc.

Went home put my lazeys on hold and got stuck in and two hours later the noise is nearly totaly gone , I'll run it for a couple of days and if what little there is left is still there I'll do it again.

Just a word of warning to others, get engine mounts on the body started before the bolts on the engine mounts , dunno about the 3FSE but if you do it the other way round on the 5S- FE you'll be wishing you hadn't.

[HAVABEER]

did you let the work shop know you managed to fix the noise they couldn't be bothered. and that you'll never got back there again?

[BASHOdi]

did you let the work shop know you managed to fix the noise they couldn't be bothered. and that you'll never got back there again?

Nah , I haven't been in touch with them , it's sad realy , they've done a bit of work for me , I always pay cash on the spot and this is the second timing belt they've stuffed up on this year , the first was a Gates Racing (blue) belt in a Skyline R34GT-t , they overtensioned it , same thing , noisy as soon as the car was hot, took it back 3 times tilll they got it right.
Guess I'll be looking for a new workshop now , can't have my time wasted again like this in future.
Lucky though , so far they aint broken anything.

[jeffro ra28]

ya, belts that are to tight are noisy man. Specially the gates racing ones.

[andrew_mx83]

Nah , I haven't been in touch with them , it's sad realy , they've done a bit of work for me , I always pay cash on the spot and this is the second timing belt they've stuffed up on this year , the first was a Gates Racing (blue) belt in a Skyline R34GT-t , they overtensioned it , same thing , noisy as soon as the car was hot, took it back 3 times tilll they got it right.
Guess I'll be looking for a new workshop now , can't have my time wasted again like this in future.
Lucky though , so far they aint broken anything.

i did one of them as a cashie a few weeks back.... weird tensioner setup but no funny noises once fired up