| Author |
Message |
    
Spyder12s
| | Posted on Wednesday, June 16, 2004 - 04:19 pm: | 
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I have the same noise in my 12 ..wish I knew what it was .. |
Unibear12r
| | Posted on Wednesday, June 16, 2004 - 07:19 pm: |
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Ok I'll sound REAL stupid on this one....
Alternator/front sprocket on the primary chain?
You said low left front corner of the engine correct? Not much in that area is there.
Good luck |
Jwz7
| | Posted on Thursday, June 17, 2004 - 12:54 am: |
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sounds like my bike too and i only have about 200 miles on it. |
Opto
| | Posted on Thursday, June 17, 2004 - 04:53 am: |
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Ingemar that definitely doesn't sound right to me, I'd definitely be removing the primary cover and having a look in there, even though it does sound like valve-train noise to me, the fact that it suddenly made this noise would have me greatly concerned, plus it does sound a lot more metallic than I'd like. Other option is take it the dealer or trusted m'cycle tech for a listen. |
Dale
| | Posted on Thursday, June 17, 2004 - 09:41 am: |
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Thought I had piston slap on my xb12s. Turned out to be cam tapping. Annoying, but livable. To detect, get the motor hot, spray down cam cover with water, if sound quiets down than it is cam tap. Sounds just like piston slap. |
Ingemar
| | Posted on Thursday, June 17, 2004 - 01:22 pm: |
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Thanx Opto. You're right, it's not right and I am taking it back (again).
I don't understand people stating they've been living with a sound like this and believe it's normal. To anyone with a sound like this, believe me it isn't normal, never was and it never will. Take it back. Period.
Dale, thanx. Piston slap would most likely sound higher. I thought of cams and lifters but it dissapears when the engine is hot OR leaning to the right. In fact that last thing is the only thing that keeps me doubting if it's a (leaking) hydrolic lifter instead of a rod bearing.
I'm pretty much convinced it's the rod bearing, which is serious stuff. The sound is definitely NOT in the heads or even near. It's in the front of the bottom end/lower part of the front cylinder.
Thanx for all the ideas. I'll keep ya posted.
Ingemar. |
Meneerdeduivel
| | Posted on Thursday, June 17, 2004 - 02:45 pm: |
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Ingemar,
Don't mean to be a annoying, but my XB9S also makes (kinda like) this noise from what I hear from your sound clip.
It always made this noise so I never worried about it and because all of my HD friends have more noise to endure with their evo and shuvels...
Can't wait to hear what the story is when you find out what it is.
Greetz from Belgium,
Geert |
Ingemar
| | Posted on Thursday, June 17, 2004 - 03:08 pm: |
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I realize the sound is LIKE cams/lifters. This is the typical (some find it annoying) harley sound. I love that sound. This is not the same.
Now, putting a screwdriver to the head of one of the cylinders and the plastic bit to your ear would confirm this. It amplifies that sound. This is how you can trace failing ball bearings etc. Now this particular sound doesn't come from there. It sounds too heavy (ie too much mass) for a rocker/lifter/cam sound. That's why I suspect the rod bearing.
I know it's hard to judge just from a silly sound file recorded with a digi-cam, but I still find the majority of replies very helpful.
Thanx again,
I'll keep you posted.
Ingemar. |
Dale
| | Posted on Thursday, June 17, 2004 - 08:11 pm: |
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Saw some factory guys today. Cam Knocking is caused by the tolerances they have for the cam bearing spacing. Too tight and the gears whine. A little loose, then they knock. We had my motor apart and found nothing wrong. It still knocks, loud. They said they have not had any rod bearing trouble. |
Charlieboy6649
| | Posted on Friday, June 18, 2004 - 12:22 am: |
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I've refrained posting until now because I'm sure you've convinced yourself that something is wrong (and I'm not saying there's not. Hard to tell severity from a sound byte) but I too have that very loud sound out of my XB. I've asked my local Buell Tech and he said that the Buells (especially the XB's) valvetrain are much louder than Harley motors. So, thus I havn't worried about it; but my wife's bike doesn't sound as loud.
Now, I'm interested in learning your findings... I sincerely hope the tech is right and we have nothing to worry about. |
Dcmortalcoil
| | Posted on Friday, June 18, 2004 - 12:35 am: |
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Seems to me many XBs sound like the sound byte, including mine. Maybe its suppose to sound like that. |
Jbird11
| | Posted on Friday, June 18, 2004 - 10:15 pm: |
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I had the same problem ( so I thought ) I took my bike back to dealer soon after I bought it because I thought the " RAPPING " was bad. They kept it for a few days and said they had to call Harley for an answer. They got back to me a few days later and said it was fine. I still dont like it! but it runs great. |
Dale
| | Posted on Saturday, June 19, 2004 - 03:59 pm: |
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Well, ignore what I said before. We well be tearing down the motor on Monday. It has real big problems now. We well not have any trouble figuring what is wrong this time.
Let you know what we find Monday Night. |
Ingemar
| | Posted on Tuesday, June 22, 2004 - 04:50 am: |
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Dale,
Any news on what's up with the bike? |
Dale
| | Posted on Tuesday, June 22, 2004 - 05:54 pm: |
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We tore it apart yesterday. Case cam bushings welded to cams. The bushings spun in the case. The case is shot. Pistons hitting valves because of excessive play. And or excessive play in rod bearings. There was a lot if steel in the oil. Motor shot. New one on way. Hope to leave for the dragon on Saturday. The bike has 16000 Miles. I change the oil every 2500 Miles. I use Syn 3. |
Hogs
| | Posted on Tuesday, June 22, 2004 - 06:14 pm: |
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Dale.. what gives.. why would yours fail when others have double that mileage out there?? I wonder?? Just a Bad run on yours ..Perhaps built late on a Friday afternoon ... |
Reepicheep
| | Posted on Wednesday, June 23, 2004 - 08:43 am: |
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How was your oil pump / oil pump drive gear Dale? Sorry to hear about the engine, that really sucks. |
Ingemar
| | Posted on Wednesday, June 23, 2004 - 08:53 am: |
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Ouch!
Man, sorry to hear about that. Would be a real bummer if my engine ends up like that too...
One more question Dale, did your ticking noise got less or even disappeared when the engine got really hot? |
Charlieboy6649
| | Posted on Wednesday, June 23, 2004 - 03:01 pm: |
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 Sorry to hear that. Good thing it was under warranty! Or was it? |
Dale
| | Posted on Wednesday, June 23, 2004 - 06:08 pm: |
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No. The sound was pretty much the same. Oil light never came on with the engine running. Swing arm about 115 to 120 degrees. |
Moboy516
| | Posted on Wednesday, June 23, 2004 - 06:30 pm: |
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Mine has a "fan" or "buzzing" sound from 4000 to 5000 rpm. It this the same sound as everyone else's? |
Ingemar
| | Posted on Sunday, July 11, 2004 - 05:21 am: |
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http://www.buelletinboard.com/phpbb/viewtopic.php?t=235&highlight=
Not my bike (but has a similar knock from the bottom end). Granaded after getting it back from the dealer and got told not to worry. It's normal ...
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