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81 GS1100E mods

  • Thread starter Thread starter Anonymous
  • Start date Start date
Do the straight cut gears in a GS make as much noise as an import car that is driving in reverse? Or how about like a V8 that has had straight cut timing gears put in? I assume it would be the same kind of noise but at 10,000 RPM I'm guessing the GS would be pretty loud.

Cheers, Steve
 
I've had straight cut gear conversions done on several drag motors and never noticed a sound difference. Didn't measure before and after but my ear didn't hear any difference. I believe the quieter primary drive allowed the factory to be a little less restrictive with the intake and/or exhaust systems while still meeting EPA and CARB standards, but I don't have any specifics here.
 
Benney, you will also have to replace the valve guilds to shorter ones and sink the valves .040 deeper in the head and get a set of extended adjuster screws for the rocker arms to run those cams If you use the parts you got and follow the suggestions from Massakins you will have a very nice motor
 
I have bought a 1134cc kit Dennis Kirk has overbore kits on ebay cheap. It is 2mm overbore I have talked to a local shop and they said they could bore out my block as needed. I guess there will be no other mods I need to do the put this on the bike? What about the cams will they work ok with this size motor or are they too much. If I use them where can I get the shorter vavles and adjuster screws? Also I the 1261 kit is for sale it comes with block and sleeves intstalled and 2 sets of pistons.
 
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