Engine clicking/ticking metallic noise! WTF?

[Guth]

(04-19-2014 08:20 AM)CB4ME Wrote:  I agree the air cooled engine is by nature an animal of many different noises. One suggested cure is to install a louder set of headers and exhaust.

I can still hear a variety of noises coming from my engine with a Staintune slip-on installed. The exhaust isn't really all that loud. I've always figured that it was just the nature of the beast, being an air cooled engine.

Another thing I've noticed is how my engine (this goes for my water-cooled Hawk GT as well) sounds while it is sitting there idling with my helmet off versus having my helmet on. When I have my helmet on, most noises are filtered out, but others are not so they tend to stand out more. I have no idea how things sound going down the road with the helmet off because I always have it on.