noisey propshaft?

Post by **robbieg** » 10 Sep 2005 12:41 am

is it normal to get a rattly sound comming from under the car when the car is not in gear? it disapears when u press the clutch but then comes back as soon as you release it?

Post by **ereg340** » 10 Sep 2005 01:21 am

Blimey , I also live in Eastbourne and my 340 has a rattling noise from the prop shaft as well. My 1st piece of advice is don't take it to Nationwide Autos on Lotteridge drove as they'll probably make a complete balls up of it like they did with mine.
I've had my 340 for 18 months and I had to have a new prop shaft (kindly donated by a another board member ) about 2,000 miles ago . The new one started rattling about 500 miles after it had been fitted I'm thinking maybe its not on tight enough. The old one rattled for about 10 months before giving up the ghost, towards the end it also made a weird rasping noise when travelling slowly in heavy traffic , I suppose I should have done something about it sooner.
So my second piece of advice is check its securly attached to the car .
I'm hopeless at mechanic stuff so I take my car to Haven Garage at Pevensey and they seem alright down there.
EReg340 340pw

Post by **redline** » 10 Sep 2005 10:35 am

are you sure its the propshaft , the clutch release bearing sometimes makes this noise ( hence it going when you depress the clutch pedal ) It dosen't appear to cause any damage (mine has done it almost since I had the car )

Post by **classicswede** » 10 Sep 2005 10:43 am

redline wrote:are you sure its the propshaft , the clutch release bearing sometimes makes this noise ( hence it going when you depress the clutch pedal ) It dosen't appear to cause any damage (mine has done it almost since I had the car )

My release bearing is noisy at the mo, I have a new clutch kit waiting to on. Just need the time to do it.

Dai

Post by **RandomHero** » 10 Sep 2005 12:55 pm

The noise comes from the release bearing indeed! (Couldn´t find the word)

It can´t hurt much, but solving it probably needs replacing.

Post by **classicswede** » 10 Sep 2005 01:02 pm

Thats good at least now you can solve the problem and have to put up with an annoying noise.

Dai

Post by **Chris_C** » 10 Sep 2005 02:54 pm

I've always been told it's the clutch release bearing, but Kar still does it even after I had a new clutch ~10k ago. Should that have been replaced?

Post by **redline** » 10 Sep 2005 05:27 pm

clutch release bearing should be replaced as part of the clutch ,it may be that the release bearing is held in a fork that is released fully by a spring if the spring is weak it may not be allowing the bearing to fully release , if that makes sense

Post by **huskyracer** » 10 Sep 2005 07:07 pm

Hate to disagree with everyone, but I think the noise you are refering to is actualy from the gearbox, commonly known as cluster chatter. both the gearboxes in my 340 have this. when the box is in neutral, the freewheeling gears rattle against each other causing the noise. the prop makes a great amplifier of this noise. try sticking your head down by the sill with it running in neutral and see if it is coming from the front or the back. either way the noise is harmless so dont worry about it

Post by **jtbo** » 10 Sep 2005 07:17 pm

huskyracer wrote:Hate to disagree with everyone, but I think the noise you are refering to is actualy from the gearbox, commonly known as cluster chatter. both the gearboxes in my 340 have this. when the box is in neutral, the freewheeling gears rattle against each other causing the noise. the prop makes a great amplifier of this noise. try sticking your head down by the sill with it running in neutral and see if it is coming from the front or the back. either way the noise is harmless so dont worry about it

Yes, this is how it is, mine does it too

Post by **classicswede** » 10 Sep 2005 07:23 pm

Gearboxes do tend to make a noise. Another possible point to look at and remember is when changing the clutch always fit a new thrust bearing.

Dai

Post by **Chris_C** » 10 Sep 2005 10:56 pm

huskyracer wrote: either way the noise is harmless so dont worry about it

Why is it this bit of info sticks out most in these posts

Website · Post by **antiekeradio** » 10 Sep 2005 11:33 pm

and very sorry to disagree with everyone else AGAIN.

(at least; concerning the 340's)

its the clutch shaft bearing!!! located at the end of the bellhouse, near to the place where the clutch shaft has its connection to the prop shaft.

on a 360 it could indeed be the rattling gearbox wheels (since that models have a torque tube)

It is very common to get problems with the clutch shaft bearing after fitting in a new clutch without changing the bearing as well.

my 1.7 had a squeeking noise above 2500 rpm. solved that too by oiling that particular bearing.

It has a pretty tough life, high revs (engine revs) and a lot of dirt and dust in its surroundings (inside=clutch dust, outside=road dust)

Post by **redline** » 11 Sep 2005 09:38 am

why dos it dissappear when you press the clutch pedal down then ? I only have to tap my clutch pedal to make it go away ( perhaps we are talking about different noises )

Post by **huskyracer** » 11 Sep 2005 10:03 am

@ Redline, do you have to depress the clutch to get the noise to go away or just put pressure on the pedal if you see what I mean? if you put the clutch down enough to disengage it then the prop and the box stop going round and the noise stops too, ie the noise is somthing from the prop back, If you just rest your foot on the pedal with out pushing it down far all you have done is put some load on the release bearing, if the noise now stops the release bearing is causing the noise

If the clutch quill shaft bearing is worn then this noise will go when the clutch is fully depressed as it is efectively part of the prop