Rubber blocks between fins

[Guest]

I have removed the rubber blocks between the fins during re-build should I put them back? If so I would like to replace them with new rubber, where would I obtain theses. Do they go between every fin?

[blowerbike]

i believe these are for vibration.
not replacing these should cause you no noticeable problems.
if your want to replace these...they may still be available from suzuki.

[Kiwi Canuck]

Yes they are still available, and they cut down on the engine vibration hum at certain revs.
$1.65 each and there are 18 total.

If you use parts Outlaw, you can call them to discount the parts as there minimum item cost is now $2.49 each.

Part number, 11152-45000 or new number 11152-38A00

[Nessism]

Didn't we just have a thread on this exact same topic?
EDIT: here is the thread...http://www.thegsresources.com/_forum...tween-the-fins

The new parts are gray colored, not black. I bought a bunch of these but removed them because I was doing a restoration and wanted the OEM look, but the gray parts didn't look right to me. At any rate, they are there to damp engine noise and not strictly necessary.

[WilliamGLX81]

I thought they were to prevent harmonic vibrations from creating resonance in the engine and cracking parts.

[blowerbike]

I thought they were to prevent harmonic vibrations from creating resonance in the engine and cracking parts.

are you serious??????????

[WilliamGLX81]

are you serious??????????

Completely. It's the reason there are heavy/rubber dampers on belt-drives on cars.

http://en.wikipedia.org/wiki/Harmonic_damper

Though that's on the rotating part of the crankshaft, harmonics can still happen along the sides of the engine case.

And http://www.sciencedirect.com/science...03682X13001576 Goes into detail about the purpose and end result of the dampers. Including a 10% increase in engine temp with the dampers. Without them, your engine may run cooler and less efficiently than it should.

Any time someone says they want to remove something, I like to ask them "So, you're smarter than the engineers? Why are they there in the first place?"

[blowerbike]

if the above rules applied there would never have been hot rods/drag bikes/land speed and so on..everyone would be "vanilla"

[Nessism]

Those damper nubs are to keep the fins from ringing and radiating noise (in theory). A holdover from Suzuki's two stroke days. Not sure they do anything from a functional standpoint as judged in the real world. And not to worry about them affecting temperature, they don't enough to measure or matter.