Fine Metal Shavings In Gearbox Oil

[Dani Boi]

Just got a new clutch installed on my car and the workshop also changed the gearbox oil. They found some very fine metal fillings around the plug area and floating in the gearbox oil. He wrapped the filings up in paper so I could have a look, and yeah if i rub it between my fingers it's definately there...

I know it's not good, what should I do? Any quick checks I can do before I drive it off a cliff

On another note there's some sort of noticeable spinning noise coming from the passenger floor. Could a machined flywheel cause that or is it just the clutch bedding in etc?

[Impact]

as far as i know its normal to have some fillings? SOME

every time u crunch gears it shaves a bit of what ever off and it ends up where ur oil is.

[ossie_21]

The noise should go away when the clutch is engaged, if so it's pretty normal.

[mitchy_]

The noise should go away when the clutch is engaged, if so it's pretty normal.

rofl, who told you that?

when does it make the noise, clutch engaged/disengaged? f**ked bearings will make a noise, could be the throwout bearing (was this replaced with the clutch?) or even the input shaft bearing.

the only noise a box should make is the rattle when a multi plate clutch is disengaged, or straight cut gears.

[reNEGaDe88]

Sounds like gearbox shaft bearing to me. Does it get noisy in gears like 3rd or 5th? My R31 did that. I broke some teeth off 3rd gear, and then it was noisy in 3rd and 5th. Got worse and louder as I went on. Fillings can get stuck in ur bearings or just wear it out real quick. Best to completely flush ur gearbox and baby it. Use redline lightweight shock proof oil to ease the situation, buts its bad. Save up cash for a new 33 box.

[inthisglass]

oh noez

how big were the filings?

could just be the normal wear and tear

or from crunching gears

if everything feels alright then i wouldnt worry

most 33 boxes crunch and crunch from shite synch-roes but keep on going

[Hanif85]

I agree, sounds like bearings, don't be too worried, but it probably is time to start saving for a box!

Had the same problem in my s14 (filings) and from memory my mechanic used a different box oil to prolong its life.

[Dani Boi]

when does it make the noise, clutch engaged/disengaged? f**ked bearings will make a noise, could be the throwout bearing (was this replaced with the clutch?) or even the input shaft bearing.

the only noise a box should make is the rattle when a multi plate clutch is disengaged, or straight cut gears.

The noise only happens when im driving normally, if the clutch is pressed the noise will disappear, but as soon as I release the clutch it comes back. I dont know if it'll be a huge problem (its not clunking or extremely loud) as its only just happened as soon as I got the clutch installed. But the kit I had replaced the clutch, pressure plate and release bearing. It might be "wearing in" sort of speak, I think I might leave it for a week or so. I was more worried about the metal in my gearbox oil

But yeah everything feels right with the car and I have crunched my gears once or twice since owning, cant believe I didn't think of that

[Douse]

My car does that too.

Because it doesn't do it when the clutch is pushed in, it means it is not the thrust bearing but the gearbox bearings.

Wouldn't worry about it until something breaks. My gearbox has made that sound for the last 1.5 years and hasn't gotten better or worse, even after changing the oil. I have been to advanced driver trainings and drags and its still all good.

I am still expecting it to break with the extra power being put through the crappy RB20 gearbox, but it keeps on trucking

As for the metal shavings, I had those too when i changed the oil. Thats what the magnet on the gearbox sump plug is for

[reNEGaDe88]

Yeah, its bearings. When the gearbox is spinning in gear or in neutral when the flywheel and clutch are in contact it will make that noise. So its not the thrust bearing as said b4.

My R31 did that cos I double the power output of the engine on a 20 year old box. My bearing noises got worse and worse until the box broke.

[Dani Boi]

But how is it that it's happened as soon as I got a brand new clutch installed? Bit of a coincidence isn't it?

[ossie_21]

rofl, who told you that?

when does it make the noise, clutch engaged/disengaged? f**ked bearings will make a noise, could be the throwout bearing (was this replaced with the clutch?) or even the input shaft bearing.

the only noise a box should make is the rattle when a multi plate clutch is disengaged, or straight cut gears.

You can pick yourself up off the floor if that's possible, mis-spelling one word isn't the end of the world. But thanks for making the effort.

It's exactly as I meant, you can hear the bearing when the clutch is engaged (easy to hear at idle), but when you dis-engage it goes away. It's a normal thing with most aftermarket clutches & naturally it seems odd the first time you hear it after you knew what the previous clutch sounded like.

[Turbz RB-25]

Pretty normal to have some shavings mate.

[ossie_21]

Oh and because you say it's quite noticeable on the passenger side it could be the box, but weird if it's only noticeable after an oil change. The clutch bearing sound generally seems to be coming from right under your feet, not on the other side....

[mitchy_]

You can pick yourself up off the floor if that's possible, mis-spelling one word isn't the end of the world. But thanks for making the effort.

It's exactly as I meant, you can hear the bearing when the clutch is engaged (easy to hear at idle), but when you dis-engage it goes away. It's a normal thing with most aftermarket clutches & naturally it seems odd the first time you hear it after you knew what the previous clutch sounded like.

what did you mis-spell?

either way, there shouldn't be any noises... i've had a stock clutch, os giken super single, exedy single, and now a custom built single plate, not one has made a noise.

[Kaido_RR]

what did you mis-spell?

either way, there shouldn't be any noises... i've had a stock clutch, os giken super single, exedy single, and now a custom built single plate, not one has made a noise.

and you are god, so what you say must be right?

[Douse]

You can pick yourself up off the floor if that's possible, mis-spelling one word isn't the end of the world. But thanks for making the effort.

It's exactly as I meant, you can hear the bearing when the clutch is engaged (easy to hear at idle), but when you dis-engage it goes away. It's a normal thing with most aftermarket clutches & naturally it seems odd the first time you hear it after you knew what the previous clutch sounded like.

Hold on hold on hold on....

He said the noise disappears when the clutch in engaged, so it is not the thrust bearing. As the thrust bearing is working while the clutch is engaged...

And i would have thought you shouldn't be able to hear a brand new thrust bearing?!?

[mitchy_]

and you are god, so what you say must be right?

correct.

[Kaido_RR]

correct.

good we clear that up

[-Dukes-]

No point in have teeth if you can't clean em.