metal chunks in oil

Capone998 · #1 (**permalink**) 08-29-2008, 03:13 AM

Hey all. I found these 2 metal chunks stuck to the magnet on the drain bolt when I changed the oil at 20,183 miles on an 02 998. The pencil in the pics is for reference. Should I be worried? Am I riding a grenade? Thanks for any input.
[IMG]file:///C:/DOCUME%7E1/Owner/LOCALS%7E1/Temp/moz-screenshot.jpg[/IMG][IMG]file:///C:/DOCUME%7E1/Owner/LOCALS%7E1/Temp/moz-screenshot-1.jpg[/IMG]

BC999S · #2 (**permalink**) 08-29-2008, 04:07 AM

1. Anything else similar in the oil screen?

2. Any untoward new sounds (chings, bangs, taps, knocks, ticks) emanating from the engine?

3. Care to pull a rocker cover to check your valve collets?

Ducman851 · #3 (**permalink**) 08-29-2008, 02:18 PM

Kinda looks either like the end of the rocker holding spring or the end of the shift detent spring.

Capone998 · #4 (**permalink**) 08-30-2008, 04:30 AM

Quote:

Originally Posted by BC999S

1. Anything else similar in the oil screen?

2. Any untoward new sounds (chings, bangs, taps, knocks, ticks) emanating from the engine?

3. Care to pull a rocker cover to check your valve collets?

1.Nothing else similar in the oil screen ever
2. Bike sounds the same as always as far as I can tell(I would likely notice a sound change)
3. Checking collets is above my pay grade(not mechanically inclined-yet)However, I do have an extended warranty. Would it be bad to ride it to the dealer for inspection?About 40 miles away.
Thanks for the input!!!

BC999S · #5 (**permalink**) 08-31-2008, 12:30 AM

Quote:

Originally Posted by Capone998

However, I do have an extended warranty. Would it be bad to ride it to the dealer for inspection?About 40 miles away.
Thanks for the input!!!

That's hard to say. Input from others more knowledgeable than I say put it in the back of a pickup and drive it over. Take those "spare parts" with you. Let us know how you make out.

Capone998 · #6 (**permalink**) 08-31-2008, 06:58 AM

Thanks for all the input. I'll be "carting it over" in the next week or so and I'll definitely let you all know in case the same issue happens to any of you.

Maryland998 · #7 (**permalink**) 09-03-2008, 01:56 AM

It almost looks like those pieces are too large in diameter to be half rings for the valves. Besides, there is no way the half rings can "pop" out. They are encapsulated by the shims. Some of the guys running 748's and 749's have often reported of the half rings being in more than two pieces when they have done their valve checks.
We do have the already mentioned gearshift springs. Mine failed/broke. But the shift lever would not return to it's central position. There are two (springs) on the shift arm. If you are not having shifting problems. Those may not be the culprit.
One source could be from a valve closer spring. Since the valves don't "need" them. Even if one broke, it would not cause any real noticable problem. As long as the debris didn't do any harm before being trapped by the magnet. Bruce Myers explained that in alot of the competition engines they leave these springs out. As they are for emissions and low rpm periods.
If I found that bit of metal on my drain plug. I would pull the valve covers and inspect those springs first. If not from them. Then pull the stator cover. And check those.

Hope this helps. Ken.

Ducman851 · #8 (**permalink**) 09-03-2008, 05:05 AM

Quote:

Originally Posted by Maryland998

It almost looks like those pieces are too large in diameter to be half rings for the valves. Besides, there is no way the half rings can "pop" out. They are encapsulated by the shims. Some of the guys running 748's and 749's have often reported of the half rings being in more than two pieces when they have done their valve checks.
We do have the already mentioned gearshift springs. Mine failed/broke. But the shift lever would not return to it's central position. There are two (springs) on the shift arm. If you are not having shifting problems. Those may not be the culprit.
One source could be from a valve closer spring. Since the valves don't "need" them. Even if one broke, it would not cause any real noticable problem. As long as the debris didn't do any harm before being trapped by the magnet. Bruce Myers explained that in alot of the competition engines they leave these springs out. As they are for emissions and low rpm periods.
If I found that bit of metal on my drain plug. I would pull the valve covers and inspect those springs first. If not from them. Then pull the stator cover. And check those.

Hope this helps. Ken.

Post #3

infoage1 · #9 (**permalink**) 09-03-2008, 06:10 AM

Ok, since we're guessing...

I'm going to guess that whoever did your valves last didn't seat a closer shim properly, and that one of the half-rings got sheared by the closer shim.

How long ago was the last service? Same dealer you are going to take the bike to?

vij · #10 (**permalink**) 09-03-2008, 07:00 AM

Quote:

Originally Posted by infoage1

Ok, since we're guessing...

I'm going to guess that whoever did your valves last didn't seat a closer shim properly, and that one of the half-rings got sheared by the closer shim.

How long ago was the last service? Same dealer you are going to take the bike to?

Or that they lost a half ring and did not find it assuming that it was falling out from the engine and did not look for it.

Jocke.......

infoage1 · #11 (**permalink**) 09-03-2008, 07:11 AM

Quote:

Originally Posted by vij

Or that they lost a half ring and did not find it assuming that it was falling out from the engine and did not look for it.

Jocke.......

Yeah, that's possible, and it got munched later...

Capone998,

Is there any way you can measure the diameter? I just measured a half-ring at .067" (+-)

lushbaugh-00'748 · #12 (**permalink**) 09-03-2008, 10:49 PM

i vote that its a secret decoder ring so secret that it was hidden inside your motor....

Capone998 · #13 (**permalink**) 09-10-2008, 04:57 AM

Quote:

Originally Posted by infoage1

Yeah, that's possible, and it got munched later...

Capone998,

Is there any way you can measure the diameter? I just measured a half-ring at .067" (+-)

Thanks for the input. But I just got the same dealer that does all my work to pick up the bike last Saturday morning and sent the chunks with them to give to the mechanic. Last service by them was at 18,000 and the oil change was at approx 20,000 when I found the "secret decoder ring" as someone earlier put it. Maybe that means I win a free 1098R!!!

. I'll let you all know right when they get back to me. I'll call tomorrow I think. Thanks for the help everyone!!!! I really appreciate it since I'm a crappy mechanic but I'll have to become a good one when my extended warranty expires.

lushbaugh-00'748 · #14 (**permalink**) 09-10-2008, 05:03 AM

Quote:

Originally Posted by Capone998

Thanks for the input. But I just got the same dealer that does all my work to pick up the bike last Saturday morning and sent the chunks with them to give to the mechanic. Last service by them was at 18,000 and the oil change was at approx 20,000 when I found the "secret decoder ring" as someone earlier put it. Maybe that means I win a free 1098R!!!

. I'll let you all know right when they get back to me. I'll call tomorrow I think. Thanks for the help everyone!!!! I really appreciate it since I'm a crappy mechanic but I'll have to become a good one when my extended warranty expires.

lol i hope you do win somethin....and you know what they say.....

Capone998 · #15 (**permalink**) 09-12-2008, 01:16 AM

Quote:

Originally Posted by lushbaugh-00'748

lol i hope you do win somethin....and you know what they say.....

That's funny!

Capone998 · #16 (**permalink**) 09-22-2008, 12:49 AM

THey just called me and said it's a valve keeper, and that they found no damage from it, removed the leftovers. I don't remember if they replaced it or not. Should they have, or is it not necessary?

Old Fart · #17 (**permalink**) 09-22-2008, 02:42 AM

It's most likely that a tech dropped a half ring in the head then it found its way down hill into the sump. 99.9% that he installed a new one.

To check it's quite simple. Just pull the valve covers and look at each valve stem. You'll see the half circle keepers in the collet. 2 per valve.

Note that if you ever want to adjust your valves slide a piece of 1/4" plastic fuel hose about 4" long down the return holes on the heads. That way the half rings can't fall down there as they are sooo easy to drop. Also put a wad of paper towel along the closer rocker shafts as the half rings can fall under them and are bitch to retrieve. *How would I know that....

Capone998 · #18 (**permalink**) 09-22-2008, 03:06 AM

Thanks for the input. Thanks puts my mind at ease.

infoage1 · #19 (**permalink**) 09-22-2008, 09:25 PM

Quote:

Originally Posted by Capone998

THey just called me and said it's a valve keeper, and that they found no damage from it, removed the leftovers. I don't remember if they replaced it or not. Should they have, or is it not necessary?

"removed the leftovers"

What "leftovers?"

"Removed" from where?

???

Capone998 · #20 (**permalink**) 09-23-2008, 01:03 AM

Quote:

Originally Posted by infoage1

"removed the leftovers"

What "leftovers?"

"Removed" from where?

???

I was driving during the call, but I believe there were a few pieces of the keeper left in their original spot and those were removed/replaced. I assume that's possible(assuming I heard him correctly)??

yes? no?