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Discussion Starter #1
Had a quick chat with one of the engineers who inspected my car today at the dealer. He noted on the sheet that the gearbox bearings were noisy.

I have noticed this, and read up on it a bit - the rattle is only heard when the engine is idling, with the clutch disengaged (pedal up). When the pedal is depressed, the noise stops. There is no obvious noise from the gearbox when driving in gear.

Other forum posts have pointed to the clutch release bearing being at fault, but some people have disagreed with that, including the engineer at Honda, who state that if it were the release bearing, it would make noise only when the clutch is engaged (pedal depressed).

So who is right? Am I looking at a clutch replacement or a gearbox rebuild? The engineer said that if it is the gearbox, it will probably not get any worse particularly quickly, but it will deteriorate over time - is there any likelihood of damage to the rest of the gearbox if I continue to drive it?
 

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found this info not sure if it relates to your symptoms..

Bearing Noises: Bearing noises in a clutch system are easily distinguished by running a few simple tests. Start the engine and leave the transmission in neutral. If a transmission makes noise when it is in neutral it is often a worn input shaft bearing. Now depress the pedal until the clutch just engages. This is the point where the release bearing is just contacting the pressure plate fingers. If you begin to hear a squealing sound this is likely a worn release bearing. If a whirling noise is present when the clutch pedal is fully depressed it is probably the pilot bearing.
 

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Discussion Starter #3
That information would suggest a worn input shaft bearing. However that information only relates to clutches, and doesn't take the possibility of it being a gearbox bearing into account :/
 

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That information would suggest a worn input shaft bearing. However that information only relates to clutches, and doesn't take the possibility of it being a gearbox bearing into account :/
hard to diagnose without a sound clip, if it was me i'd get a second opinion from a gearbox specialist..
 

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Discussion Starter #5
Quick video. The engine is a bit tappy (valve clearances are going to be sorted asap), so it's tough to hear the sound, but I depress the clutch a couple of times towards the end of the recording to show the change in sound.

 

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Discussion Starter #7
Crap. I was hoping you wouldn't say that :(

It'll have to wait until I get some funds... I might as well do the clutch at the same time, so I'm guessing that I'm looking at over a grand. Sigh.
 

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Really! I was expecting you to co.e back with something like 80/90k.

Have you had it from new/ know history? Not something that normally happens is it.
 

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Discussion Starter #11
Sadly I've only had it a week and a bit. It does have full service history though, from Honda.

I'm taking heart in the fact that it probably won't get worse very quickly, so I'll get some money saved up and get it done when it needs doing!
 

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I've had cars with that bearing noise for 10ks miles without them failing. I think you will be OK. Might as well refresh the gearbox/LSD if box is going to be opened.

Sent from my GT-I9300 using Tapatalk
 

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Discussion Starter #14
I've had cars with that bearing noise for 10ks miles without them failing. I think you will be OK. Might as well refresh the gearbox/LSD if box is going to be opened.

Sent from my GT-I9300 using Tapatalk
That's excellent news! And yep, I'll be getting the whole box rebuilt at some point. But not yet ;)
 

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Looks like a job for Stevie at Grinspeed that.

That noise could be any number of things from, clutch spring rattling, goosed pressure plate, release bearing or then it could be any number of bearings in the box.

If you put just a slight amount of pressure on the clutch pedal does it go?
 

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Discussion Starter #16
Looks like a job for Stevie at Grinspeed that.

That noise could be any number of things from, clutch spring rattling, goosed pressure plate, release bearing or then it could be any number of bearings in the box.

If you put just a slight amount of pressure on the clutch pedal does it go?
Not really - it goes when the clutch is about half way depressed, so probably just as the clutch is engaging.

Whereabouts is Grinspeed located?
 

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Grinspeed is in Leyland, near Preston (NorthWest):

Unit 5,
Heaton Street,
Leyland,
PR25 2ZH

Just realised it is literally 2 streets down from where my girlfriend lives
 
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