Oct/Nov 1996
|
by Shawn Downey |
|
Strolling
up the stone path to my buddy's garage, I couldn't help but
hear his wife's accusations cutting through the crisp, fall
air. "Jack! I told you to wipe your greasy hands before
opening the kitchen door!" He sheepishly
replied, "I did." "Oh, yea? Nice
one! Now how am I supposed to get the grease off the
cat?" "Gas." He replied
matter of factly. "And how am I
supposed to get the gas off the cat?" He shrugged. "A
match?" This is not the
most popular method to remove grease, but it is effective.
Unfortunately, we were not able to apply this same technique
to the vast array of cylinders, heads, carbs and body parts
on Jack's garage floor that were supposed to resemble a 1970
Kawasaki H1 Mach III. The pyrotechnic option briefly crossed
our minds, but then so did the promise we made to the local
fire department about a year ago when we had a nasty
experience with nitrous oxide and a Norton. We did the civil
thing and sat down with a can of brake cleaner to start
stripping the 25 years of oil and grease build-up. It's
always a good idea to wear gloves when working with any type
of solvent (unless you enjoy waking up to the cracking noise
that only elastic-free skin can resonate). Wiping down the
frame by hand will also give you and excellent feel for any
hairline cracks in the steering head, swingarm or engine
mounts. Should you
discover a hairline crack, don't fall prey to your natural
instincts&emdash;throwing tools, doing a Sex Pistols pogo on
your neighbor's pansies or reciting your lifelong
accumulation of profanity. After 20+ years of burn-outs,
high sides and earth shattering float-that-valve vibration,
hairline cracks may be inevitable. If I only had hairline
fractures after years of hard riding, I would still be
getting birthday cards from my insurance agent. Mark the
cracks with white tape, so your powder coating agent will
have no trouble locating them. This brings us to
another consideration: what to look for in a powder coating
agent. First, check out the agent's references. Do not take
them for granted. The first person we contacted gave us two
references. Upon investigation, we discovered that both
references shared his family lineage and had never had their
bikes apart much less powder coated. Second, a good powder
coating agent will provide you with a quality welding
service or have an established relationship with a welder
who understands the pertinence of exact welds on a
motorcycle. While waiting for
the frame, take advantage of the time. We went and had
Jack's car window repaired (pointer: secure the frame in the
back seat with the seat belt), and started searching for
someone to paint the gas tank and fenders. When looking for a
quality painter, do the obvious. Start by asking for a
referral at your favorite motorcycle shop, and then
interview the painter. Talking to the person behind the
counter may score you free coffee and a donut, but little
piece of mind. Find out who is going to be pulling the dents
and spraying the enamel. If you walk into the work area and
see some guy attempting to remove fumes from a gas tank with
a Bic lighter, you may want to find another painter. I have
actually witnessed the lighter and gas tank trick, and, yes,
it is a crowd pleaser. But the dent that the tank acquires
when it propels into the wall is not. The same goes for
the practice of plugging the openings on the gas tank and
pumping air into it until the dent pops out like a Ballpark
Frank. The seams on a twenty-year-old steel tank have a
tendency to come apart long before enough pressure builds to
pop out the dent. Satisfied that the
frame and trim were in good hands, we began removing the
oil, grease, tar, insects, gum, fudge and pits from the
engine and chrome accessories. After spraying the cases down
with a good solvent such as carb or brake cleaner, we
discovered deep gashes in the primary chain cover and
excessive pitting all over the engine cases. We addressed
with hand sanding. We began with a medium coarse 100 grit
sandpaper then worked our way down to 220 grit. We used a 3M
Scotchpad as our final buffing agent before hand polishing
with our preferred metal polish, Quator (pronounced
"water"&emdash;how 90210). In order to
guarantee the highly coveted Fourth of July "Ooooohhhhhhh"s
and "Aaaaahhhhhh"s from all the passersby, we allocated 35
to 40 hours for the final polishing phase. Applying this
same process to the mating surfaces of the cases and carbs
prevented the unsightly mess of surplus gasket sealer, oil
droppings and troublesome vacuum leaks. The mirror finish
on the cases inspired us to continue our fall cleaning spree
right into the carbs. After dousing the bowl and all the
jets with carb solvent to remove any microscopic particles,
we hand polished the barrels until they exuded a chrome-like
exterior. This rates very high on the "Oohh" and "Aahh"
list. While we were in there, we examined the float needle
jet for the slightest amount of wear and tested the floats
for buoyancy. 25 years is a long time to sit in gas and not
become water-logged. Just imagine the number of time that
float needle has pushed the float up and down. There is
bound to be some loss of accuracy on a machined piece, and
there will be even more if the piece is plastic. Performing
a maintenance item like this reduced the risk of having to
disassemble the carbs and polish the mating surfaces later.
We stood in awe of
the pristine engine glistening in the garage. It's amazing
how a clean and polished engine assembles so much easier and
quicker than one covered in filth. If you clean the parts
and polish the pieces as you assemble them, you will run a
minimal risk of being skewered by a wild screwdriver,
slipping on grease or dropping that ever-so-hard-to-find
control panel, because mutant oil residue has slackened your
grip. Of course, there
are a few things to take into consideration when degreasing.
We were having such a great time with the brake and carb
cleaners that Jack decided to use it on the electrical
system. When it came time to fire up that beast, we were in
possession of the fastest flaming shish kebob I have ever
seen. Flames were belching every time a charge went through
the coil. Lucky for us, the local fire department still had
a sense of humor. M.M.M.

* This article originally appeared in the Oct/Nov
1996 issue of Minnesota Motorcycle Monthly.
Archives,
or M.M.M.
Main Page, or
This
Old Bike Page