Buells are the Harley-Davidson street fighter. They are inexpensive,
sharp-handling machines that give the American rider something to
shout about, something to fuck with and something to race.
This bike won't compete with the 200 mph Japanese sport
bikes, but it will handle like one, and brake like one. So we got
hold of one and evaluated it for the Sturgis 2001 run. Since I come from a custom bike or chopper background, I wasn't sure the Cyclone would do the job for me. If you ask a guy who rides a custom bike what style of bike he enjoys
and why, the answer might be strange. I want something distinctive
and bad. I want it fast and cool. I need it to handle, but be a
chopper. Perhaps an oxymoron of conditions, yet there's a mixture of
factors that go into any ride and machine. Last year I rode a
stretched rigid with a 14-over front end. What a machine. For a rigid,
it rode like a dream. For a 14-over front end, it handled well and I
passed everyone I dared to pass, generally because I had the ground
clearance to shove it close to the pavement and the raked triple
trees allowed me to turn the front end where I needed to go.
Each year the trek to the Badlands takes on a different
demeanor, and this will be no different. After a week, I discovered a serious sense of enjoyment about straddling the M-2 Cyclone. It's light, fast, a nimble handler that stops on a dime. I needed to learn to ride it like a race bike with my toes on the soft rubber pegs to enhance turning radius and ground clearance. There is also a notion that in the sportbike position, you're forcing too much weight on your wrists. I discovered quickly that if I put my ass down,
the weight on my wrists was not a problem. The force is substantial, however, when braking with a passenger on board. Ultimately, after riding two Buells, I decided that this motorcycle deserved a shot at a
Sturgis trek. It had class, felt sporty, even nasty, and I could make
it rumble. So I stood back and thought, "Can I make it even cooler?"
It didn't take long to discover that I could strip it down even
further than stock. I picked the Cyclone over the model with hard bags because of its bare bones feel. The crew here at Bikernet.com developed a five-pronged approach. One, we wanted to
enhance the Harley-Davidson marriage with Buell and downplay the
little-known name Buell for the time being. We also wanted to enhance the Sportster
motor and bring out the looks of the Harley-Davidson power plant, and
chop it in a Buell way without altering the geometry of the
frame, the front end length or lowering it, which is a tradition with
our custom bikes. There's more. We wanted the bike to sound more like
a Harley and we wanted to enhance the performance without disturbing
the long-range reliability.
Our team included myself, Professor NuttBoy, consulting from
Paul Davis of Charlotte, Gene Tomasen Jr. from the Harley-Davidson fleet center, and a number of Bikernet readers who knew about and were testing Buells. This is the first of several techs on the modifications and the experiences we have with the M-2. We collected and ordered parts, then ran to the fleet center to get the
job done. The initial plan was to unleash the natural performance of
the bike without breaking down the engine. We started by removing the
carburetor.
We replaced the needle in the slide with an '88 Sportster
needle, and drilled out the carb body above the idle adjust
plug.
That allowed us to knock out the plug and back out
the idle adjuster 2.5 turns.
Stock carburetors are adjusted from the
factory to a very lean condition. Usually they are so lean that warm
up takes a long time and you get an occasional cough through the
carb.
Others have recommended drilling directly through the
plug, but Gene warned that if you slip, you will drill
into the adjuster screw and possibly damage it. Gene also recommended
head work ultimately coupled with a 44 mm CV carb, manifold and
roller rockers in the future. I had a Screamin' Eagle air box for a Big
Twin, which I modified for the carb with an open K&N filter. We also
dropped the float bowel and replaced the 42 pilot jet with a 48. Be
careful not to strip the screws holding the float bowel in place.
Treat them with respect or they'll cause you nightmares.
We set the carburetor aside and began to remove the timing
cover to replace the cams. It's important to take a scribe to the
timing plate so that you can duplicate the timing once you have
replaced the cams. Then pull the plate and the rotor cup, which is
screwed into the No. 2 cam. Before you go any further, remove the rocker
boxes and the rocker arms to unload the tension on the non-adjustable
pushrods. Now you can remove the cam cover, but don't forget to
drain the oil first.
At this point we decided to add a racy feature to the
appearance of the bike by shaving the cam cover plate. First remove
the oil line. Unplug the timing plate wire, dismantle the connector
and pull it through the plate.
Gene used a Sawzall and a grinder to
remove the aluminum underneath the bolt holes.
You will note that there is a series of seemingly endless webbing in this area which is for noise
reduction.
Notice that in the lower left hand corner, there is a dowel
pin. Gene chose to leave it in place as a wiring guide and carve the
cover around it.
The pushrods are color coded: pink or red for
exhaust and brown for intake. The cams are numbered like you read
from left to right, or back to front, 1 to 4. Make sure you pull the
plugs for ease in turning the motor over. Install No. 4 first with red
line assembly lube; No. 3 has two index marks. Slip No. 1 in next and
No. 2 last. It has three index marks to line up the cam with the piston
position and the other cams with an index mark that aligns with a
slot on the pinion gear.
This is where we noticed that the pitch on
the Screamin' Eagle race cams was different than the new pinion
shaft gears. An emergency run to Bartels H-D was in order for part
No. 24055-91, or No. 24061-91. The factory changed to a new pitch in '99.
When replacing the cam cover, keep in mind that there are four
different length Allens holding it in place. Make sure you have the
right length in the right hole. The torque setting for the cam cover
Allens is 17 foot pounds. After the cover went back on, it was time
to reinstall the rotor cap and the timing plate.
These modifications will help it run better. Buells usually run hot from the factory because of hotter cams and Thunderstrom
Heads. At this point we re-ran the wiring to the regulator behind
the oil pump for a cleaner appearance. We only had to extend one
wire, to the oil pressure switch. Gene Jr. handled it with solder and
shrink tubing. Removal of the gas
tanks is a breeze and access to the heads and top end is easy. But if
you need to remove the engine, the fact that it is an integral part
of the frame and suspension creates unruly problems. The entire
chassis must be supported.
At this point we replaced the pushrods from the top of the
engine and replaced the stock rockerbox covers with chrome units.
Don't use anything on the self-sealing gaskets except a dab of grease
here and there to hold them in place.
With the engine assembled, we replaced the stock exhaust
with a Buell race header kit and module. While Gene Jr. was out of
town, I spoke to the Buell tech of the demo fleet, Alan Varsi, who has
worked at Bartels Harley-Davidson for more than 11 years. The Buell race
module retards the timing 5 degrees and eliminates the rev limiter.
The stainless steel header is 11 inches longer than stock, which makes
each exhaust runner equal in length. The muffler is an aluminum
canister type that is high flow with low resistance for additional
performance at the high end.
That's it. Laughlin is right around the corner, along with our first
long ride on the Harley-Davidson Street Fighter. We're looking
forward to every desolate mile. We'll report upon our
return. A new paint job is in the wings, along with some cosmetic mods
to brighten the look of this bad-ass bike.