Join Date: May 2009
Location: Indiana/ Michigan line at the Lake
I hope more people chime in here as there are different opinions available
and mine is only one to choose from.
Not much more power can be had, even with a budget, unless going 705cc, headwork,
higher compression, etc.
What CAN be done, both free and/or Cheaply is some basic modifications that uncork a
few ponies, but mainly get crisp hard throttle response and noticably better performance
than stock. The ".22 cent mod, opening the exhaust a bit, and opening the air filter box
a bit, called the "L mod." The "pcv mod" lets the engine rev much more freely.
All of this stuff can be researched here on the forum.
It's a great and dependable workhorse of an engine, but has been choked off by some
EPA regulations that can be easily reversed. The intake has to work kinda hard to
get a gulp of fresh air but the filter is fine. Most aren't happy with the K&N unit.
Take out the restrictive rubber snorkel in the intake box. Also the L mod is drilling
extra venting in an L shape at the top of the airbox for even more fresh air.
The .22 cent mod is stacking one or two #4 brass or stainless wahers under the fuel
metering needle. This goes in concert with slightly richening the idle circuit 1/2 a
turn to one turn over stock. Anywhere from 2 to 3 turns from gently seated.
Stock jetting is usually fine. Some go up a size on the main. (I did for WOT peace
of mind.) Now the extra air has to get pushed out of the back easier. Cut a slot
in the inner wall of the baffle with a chisel or screwdriver. This also kills the annoying
whistle that some individual bikes have. I pulled the entire baffle out for maximum flow.
This doesn't make the bike noticably louder unless really hitting the gas hard. I wanted
a little bark with the bite and ran in an 18" long punch and knocked a 1/2" hole forward
of the baffle into the spark arrestor cavity. This part nullifies a USFS approved spark
arrestor and may violate some areas you wish to ride such as on Federal land. The pcv
mod is nothing more than adding an automotive pcv valve to the crankcase breather tube.
It helps pull the piston dowwards on the power and intake stroke so the piston isn't
fighting positive air pressure within the block.
These alone wake the beast right up and can all be done for literally 6 bucks. You'll
notice the power surge right off idle and responsiveness is smooth and predictable.
If you want to go into big bore, camming, aftermarket slip on mufflers then the cash
flow comes into play. I just wanted back what the EPA stole, not a rocket beater
and am completely satisfied with the available power for the price. To be fair, tho,
I'm sitting on my pennies for the 685 or 705cc BB kit. Not going any further than that.
I don't know of any side protectors available. (There are tho.) I just never checked
into it. The brush guards to protect my hands from the front are plenty enough
for my personal riding taste. The stock tires are fine,and Brigestone Trailwings
are popular with the guys here. Many more are available. Some more streetable,
some better in the rough.