Noisey Primary
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Definitely not coming from the clutch. Stethescope at the primary I hear noise, I hear a noise at the rocker boxes, I hear a noise on the cam chain side. New in there. I really don't hear it at the lifters. I cant isolate it but when the motor is hot I don't here it hardly at all until the primary is hot then I hear it. I'm lost.
randy
randy
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Many compensators in your vintage bikes were replaced under warranty when they became noisy. The factory seems to have finally found that loss of spring pressure is causing the problem. There is a shim pack available which can improve the spring pressure in the comp and quiet it down. The shim pack is just a few dollars but a new primary cover gasket is over $40 making this a somewhat expensive experiment. Should you decide to go this way, check the hub area of the compensator for fretting (a red coating of fine dust looking like rust) which is common in the earlier designs. That finding would suggest a compensator replacement. The latest style has also suffered from weak springs and one guy reported adding in his old smallest size belleville spring to the new spring stack and that immediately quieted his new comp. which had become noisy in a few thousand miles.
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#8
My primary has been apart 4 times in 50K for noise. Twice by the dealer under warranty and he never did fix the real problem of a stripped spline on the alternator rotor. Then I fixed it and again when I put an auto tensioner in it. Only to realize my chain had a lot of uneven wear (typical of a chain) and that let it be tight and loose in places and made even more noise with the auto tensioner. So I went in a fifth time and took it out.
Now with that hunting idle and between 1/2 and 3/4 slop in the chain, it sort of sounds like a tiller in a gravel bed when hot at a red light. But only at idle.
It's fine at speed. That is all that counts.
You need to add a signature line like my bike line so we know what model you are talking about.
Last edited by Jackie Paper; 08-05-2017 at 09:17 PM.
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