Top end noise

[Wrightgs500f]

Well guys, I was out for a ride noticed a rattling noise from the top end pulled over checked oil was within operating range maby lower than i normally would run it so I parked it. Just got around to draining the oil i had a small amount of metal chippings in the oil obviously im about to be into a top end tear down thoughts on the most likely issue?

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[ajensen]

How many miles? What kind of metal chips?

[Watcher]

The oil will accumulate little tiny metal filings over time, which is natural.  It's also why many vehicles have magnetic drain plugs.

But if you've got actual debris then something is definitely amiss.


"Rattling" is pretty ambiguous.  My Ducati "rattles" but it's just the Desmo valve train.  My Buell "rattled" but it was an internal cam pushrod system with rockers in the head (much like how my Jeep would "rattle").
Both my GS's "rattled" but it was a combination of just loud valve noise and cam end-float.

Can you better describe what you heard?

[Wrightgs500f]

How many miles? What kind of metal chips?

17,000 and really minute like .0003 in size chips

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[ajensen]

Not so many miles and seemingly not unusual metal chips. I'd just pull the valve cover, make sure the cam chain adjuster is working properly, and check the valves. As a rule, they do not get loose, but it is worth checking anyway. Air-cooled engines make more noise than liquid-cooled engines. In air-cooled engines the clearances have to be looser, and the fins amplify noise. Also, check the camshafts end play. In addition, I'd make sure that nothing is loose on the frame. For example, one "problem" that some years of Triumph 650s had was loose tank emblems. The owners would swear that there was an engine noise. I trust you'll get the noise sorted out and enjoy riding again. Best wishes and keep us posted.

[yamahonkawazuki]

it could be this simple. lets hope so Eh?
Aaron

[sledge]

0.0003"?
Are you sure?
That's around 0.0075mm
Or......7.5microns
Or.......up to x10 the thickness of human hair!!



Surely you mean 0.03"

[Watcher]

0.0003"?
Are you sure?

Surely you mean 0.03"

Or .003.

3 thousandths is a perceptible little sliver, 3 ten-thousandths would be basically a speck.  3 hundredths, though, is like a flake.

[sledge]

I would be amazed if there was a normally used Gs5 in exsistance that didn't have 0.003" flakes stuck in the bottom of the sump.

[Wrightgs500f]

Not so many miles and seemingly not unusual metal chips. I'd just pull the valve cover, make sure the cam chain adjuster is working properly, and check the valves. As a rule, they do not get loose, but it is worth checking anyway. Air-cooled engines make more noise than liquid-cooled engines. In air-cooled engines the clearances have to be looser, and the fins amplify noise. Also, check the camshafts end play. In addition, I'd make sure that nothing is loose on the frame. For example, one "problem" that some years of Triumph 650s had was loose tank emblems. The owners would swear that there was an engine noise. I trust you'll get the noise sorted out and enjoy riding again. Best wishes and keep us posted.

Thanks man im getting into it this weekend will update on my progress then.

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[Wrightgs500f]

0.0003"?
Are you sure?

Surely you mean 0.03"

Or .003.

3 thousandths is a perceptible little sliver, 3 ten-thousandths would be basically a speck.  3 hundredths, though, is like a flake.

Yea for the most part most of metal chippings are about .0003 had 1or 2 larger chips in there but nothing more im a machinist to pay the bills.

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[Wrightgs500f]

Didn't bust out a set of micrometers and measure the chips or anything was just trying to make certain i was clear on how mynute they were.

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[sledge]

The fact you have the ability to even see something  7 microns in size by eye let alone gauge it astounds me! The average human can't see anything smaller than about 50.

[qcbaker]

All this hand wringing over the size of the metal in the oil... Yall are focusing on the minute details while ignoring OPs actual problem: top end noise accompanied by visible metal specks in the oil.


What are your valve clearances at?

[Wrightgs500f]

The fact you have the ability to even see something  7 microns in size by eye let alone gauge it astounds me! The average human can't see anything smaller than about 50.

Haha thanks man i get it your smarter than me.

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[sledge]

No........I just think you have got a decimal point in the wrong place.

[Wrightgs500f]

No........I just think you have got a decimal point in the wrong place.

Fair enough man i was just exagerating to express how mynute the chips were to see if i had something to worry about but on another note ended up being a cam chain and sprocket macking the noise so thanks for the help.

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