Just popped my 2000 mile Streetfighter V4 in for it's annual. P&H just called me concerned that they had found lots of "brass filings" "chunks" on the magnet. Any ideas chaps ? It's within warranty, but obviously miffed about not having it back today as planned something for the weekend.
Brass doesn't stick to a magnet. Brass like filings could be from big end bearing shells. Lots of any kind of filings should be cause for concern.
It's not necessarily main bearings that's the first thing that sprung to mind and these don't look like main bearing bits. I'm not familiar with the V4 components, so hopefully it's something less serious.
hopefully someone who's stripped an engine completely will pick this up, many articles refer to the crankshaft being mounted on "brass bushings" but haven't been able to find a physical representation to understand exactly what this means:- https://www.mcnews.com.au/2019-ducati-panigale-v4-r/
Ball bearings often have a brass cage round the balls and roller bearings sometimes have a brass retaining ring around the edge of the rollers. Looks and sounds like these pieces may be a part of one of these items.
Brass could be bearings. Could also just be clutch though. I’ve had that before. It won’t be magnetic eitherway.
I think you might be really glad it's in warranty. I'd tell them to strip the engine and find the problem before it goes bang...
He was panning for gold in them thar hills… I’d be a tad concerned going forwards. Record findings via Ducati workshop going forwards. Ask them to consult Ducati with their findings. If they think it’s iffy they may well change your engine.
So Ducati had a look and I got the green light to get it back this morning. Nothing damaged no sign of wear or tear. Note on the system that if it locks up at 120 and kills me it's their fault. Can't really ask for more than that. It's safely back in the lounge where it belongs
Sometimes bits get left in the engine when assembled at the factory. I know of a 1098 that had a piston ring circlip found in the drained oil a few years after it was new. The full history of the bike was known and it had never been apart. The top half of the engine was stripped and all the circlips were in place. No surprise really as with the slipper pistons the engine would have been wrecked very quickly. A couple of years later a gear selector detent spring came out with the oil. Once again a strip down showed nothing wrong with the one fitted.
The workshop did mention a bearing that had been found loose in the bottom of an engine... just a spare... basically. Not mine I might add....
My 899 had some metal flakes come out with an oil change once and they were just bits left over from manufacture/ assembly. Scary to see though.
