Strange Sound

Topics related to the ownership, maintenance, equipping, operation, and riding of the R1150R.

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stevenspoint
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Joined: Fri Dec 18, 2009 8:30 am

Strange Sound

Post by stevenspoint »

I am the proud owner of a 02 R1150 RA with 18,000 miles on the clock. I am a newbie to this sight, but not to BMW's. I started riding in 1963 and purchased my first BMW in 1976 a R60/6 in 1976 with 14,000 on the clock from Brown Motor Works in Pamona, CA. I have been hocked ever since. I need help identifying a strange tapping sound coming from the right cylinder about 5 seconds after start-up lasting for about another 5 seconds before disappearing. It only occurs at cold start-up. The tapping was never present before I installed Rubber Chickens timing chain tensioner. I installed the tensioner but did not start engine. I then torqued the heads, adjusted the valves and balanced the fuel injection, started the engine and the tapping was present as stated above. I have not ridden since the adjustments were made, just started the bike up a few times. And this is not my first time torqueing heads and a justing valves.

Your ideas will be helpful,
Dave G
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AirForceDirt
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Location: Afghanistan

Re: Strange Sound

Post by AirForceDirt »

"Tappy valves are happy valves?" Or so the random saying goes. I don't actually have a clue. It sounds like the valves, as mine always tapped on a cold start, until I got them adjusted; now they tap all the time, but mostly noticeable on decel (if you can hear it over my exhaust back-firing).
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jm1515
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Re: Strange Sound

Post by jm1515 »

stevenspoint wrote:..........I have been hocked ever since. I need help identifying a strange tapping sound coming from the right cylinder about 5 seconds after start-up lasting for about another 5 seconds before disappearing. It only occurs at cold start-up. The tapping was never present before I installed Rubber Chickens timing chain tensioner. I installed the tensioner but did not start engine. I then torqued the heads, adjusted the valves and balanced the fuel injection, started the engine and the tapping was present as stated above. I have not ridden since the adjustments were made, just started the bike up a few times. And this is not my first time torqueing heads and a justing valves.

Your ideas will be helpful,
Dave G
Did you mean Cam Chain Tensioner?
If so, are you sure you bought a RIGHT SIDE CCT from RCRG? I wasn't aware that they sold OE parts...... :?
They are different from the LEFT SIDE UPGRADE kit he sells, and I wonder if the parts would be inter-changeable........
Not saying that they wouldn't be, but the R and L CCTs are 2 distinct items.... :-k
j magda
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04 Black (the Classiest Color) R1150R
Deep in the OH wasteland...
stevenspoint
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Posts: 8
Joined: Fri Dec 18, 2009 8:30 am

Re: Strange Sound

Post by stevenspoint »

The RCR Oilhead Timing Chain Tensioner upgrade kit for the left side Cam Chain Tensioner assembly. This is the device I installed. Like I said, both heads were torqued, valves adjusted and the throttle bodies balanced at the same time the tensioner was installed. Is there any relationship between the valve adjustment and the tensioner?

Dave G
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