Timing belt noise


Information and questions on GL1100 Goldwings (1980-1983)
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tylers883
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Location: Halifax, NS Canada
Motorcycle: 81 GL1100

Timing belt noise

Post by tylers883 »



I changed my timing belts on my gl1100 this spring. The bike runs extremely well but now i have a high pitched timing belt whine that is very distracting as it drowns out some of the other noises from the engine.

What causes belt noise? How would i determine if my belt noise is excessive? And is there anything that can be done about it?

Any help - including a link to other discussions - would be greatly appreciated.


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Maz
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Motorcycle: 1975 GL1000K1
1976 CB500T
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Re: Timing belt noise

Post by Maz »

Did you check /change the tensioner wheels? These will whine if the bearings have dried out. The other main cause of belt whine is usually that the belts are too tight. Did you let the springs tension the belts or did you give them a 'helping hand'?
Maz
Ironically, Common Sense is the LEAST common of all senses!
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tylers883
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Re: Timing belt noise

Post by tylers883 »

I check the rollers for play and gritty feel but didnt lube them. I see now that was probably a mistake.

I didnt make the rollers tighter than the spring,but the old belts felt/looked stretched.

So yeah, compared to last year, it looks like a tighter,newer belt could be making more noise than im used to, and until i spray the rollers, i wont know if that is the problem.

Thanks, maz!
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Maz
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Motorcycle: 1975 GL1000K1
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1979 CB750L
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1993 Suzuki GS500E

Re: Timing belt noise

Post by Maz »

I don't know if lubricating the tensioner rollers is possible. You certainly don't want any excess lube spray getting on the new belts.
Maz
Ironically, Common Sense is the LEAST common of all senses!
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WingAdmin
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Re: Timing belt noise

Post by WingAdmin »

The tensioners are sealed bearings and shouldn't be lubricated - lubricant can get on the belts and can degrade them.

Usually the whining noise is caused by belts that are too tight.
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tylers883
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Re: Timing belt noise

Post by tylers883 »

When i pull in the clutch and rev it, i get no whine. The whine is only when i'm driving forward under torque. The whine is there while engine braking as well.

Does this help you guys?
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DenverWinger
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Re: Timing belt noise

Post by DenverWinger »

That's transmission noise then, not timing belts.
♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
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tylers883
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Re: Timing belt noise

Post by tylers883 »

It sounds alot like a snowmobile transmission( cvt)
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tylers883
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Re: Timing belt noise

Post by tylers883 »

I've gotten to the point, after 19 years, that I can hear and feel when the viscosity in the oil is beginning to break down by that whine, and how the shifter feels to my boot. The whine gets louder, and I can feel the gears "clash" a little when I shift around the time the oil starts breaking down.
I found this post related to transmission whine and old oil. Does anyone agree?


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