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Thread: Rubber like odor after installing Laser slip on for 03 R1100s Replika

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  1. #1
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    Rubber like odor after installing Laser slip on for 03 R1100s Replika

    I've purchased a used 2003 R1100s Randy Mamola Replika with 15,800 miles. Overall condition very good. Only things I've seen that give me pause are:

    1. Side body cover with areas of heat damage at the points closest to the cylinder head. Is this the burning rubber smell? Although I made some rides before replacing the muffler and did not experience this odor.

    2. I just replaced the stock dual muffler with a Laser slip on that was apparently taken off a 2004 when it was still new because the original owner wanted a different exhaust. So Laser muffler has been sitting at a BMW motorcycle dealership since 2003.

    My first ride after replacing mufflers when I pull in to the garage I smell a 'burning rubber' like odor. Doesnt seem to have any obvious areas of contact. The smell is definitly coming out of the muffler as thats where the odor is strongest 20 minutes after letting the bike cool. Engine case and cylinder surface temps checked with laser temp guage shows anywhere from 170-210 degrees F. I mention that because I dont know what is normal so any thoughts would be appreciated.

    So here are my questions:

    1. Why the rubber-like smell?

    2. Should I expect areas of heat damage on the plastic bodywork close to the engine? If not any thoughts to what is causing it?

    see pic of which area I am talking about that seems to be gettign heat damage.

    http://photo.net/photodb/photo?photo_id=16685672

    Any help you can give me would be great.

  2. #2
    Registered User roger 04 rt's Avatar
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    I'm not familiar with your model but changing the exhaust could certainly change the exhaust system tuning. That could lead to some additional heat in the area of the exhaust manifold. You might try measuring the exhaust manifold temperature with the stock and then the aftermarket exhaust.

    Nice looking motorcycle!

  3. #3
    Registered User lkchris's Avatar
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    The wire harness for the license plate light runs between the two mufflers.
    Kent Christensen
    21482
    '12 R1200RT, '02 R1100S, '84 R80G/S

  4. #4
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    Quote Originally Posted by lkchris View Post
    The wire harness for the license plate light runs between the two mufflers.
    When replacing the muffler I ran it the same way as before right between the two mufflers. I heat shrunk the 3 wires (license plate light, and each turn signal) together so it would be cleaner trough that narrow opening between the mufflers. Possibly the heat shrink sheath is the source of the odor? But it was like that before as well.

  5. #5
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    should not have that smell-
    rubber donuts holding the muffler in place all good and all the way in?

    the heat damaged fairing panel is from some idjit letting the bike warm up before riding it, or sitting in traffic, unmoving, for extended time. don't do either of those things.

    adding the laser cans should not effect heat from motor one iota. however, keep an eye on your plugs, or get thee to a dyno. these bikes run quite lean from the factory, and decreasing the back pressure will flow more air thru the system, thus leaning things out even more. if it's a problem, contact Robert Foster (you can find him as "boxercup" on the Pelican site- THE place for info on this bike. He's the importer for Laser, and has/can get the needed chip for it. http://forums.pelicanparts.com/bmw-r...0s-tech-forum/

    see ya there!
    Ride Safe, Ride Lots

  6. #6
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    rubber donuts holding the muffler in place all good and all the way in?


    I couldn't get the slip on to slide all the way in. I tried my best and tore an intercostal muscle in the process. Any tips on how to not break a rib trying to make that happen? They probably have less than an inch more to go. Can't tell for sure but the new cans are about an inch or little less more out towards the back than stock.

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