I bought the bike for $400 only because I could ride it home. As you can
see, I probably paid too much for it. It was sorely abused. Everything that could be worn
out was totally used up. Tires, brakes, clutch, chain, sprockets, you name it. All the
bodywork was missing except for the front fender and (badly dented) gas tank. A friend
found the fairing and tailpiece in a junkyard and sold them to me for $35. The fairing was
badly cracked and had several holes in it. I fixed the fairing by channeling out the
cracks and filling them and the holes with epoxy. I popped the worst dents out of the gas
tank by wrapping several tie-downs around it, pressurized it with air to about 10 psi, and
tapped around the perimeter of the dents with a ball peen hammer. What I couldn't pop out
I filled with Bondo. After painting all the body parts with primer, I gave them to another
friend who painted them with Harley Davidson Candy Ruby over a gold base for $80. An Auto Upholstery shop down here recovered the seat for $40.
After disassembling the rest of the bike to paint the frame, I found
my work had only begun. One of the engine mount bolts was sheared clean off, and the
exhaust cam journal had over .020" clearance, (about ten times too much). The
transmission had ground up the clutch retainer wire spring (God knows how it got in
there!), and the piston to cylinder clearance was well past a simple re-ring job. The oil
pickup screen was blocked with clear silicone tub caulk that the previous owner used in a
feckless attempt to seal the valve cover gasket. No wonder the connecting rod bearings
were down to their base metal!
I found another engine, but it was junk. Fortunately, the
transmission gears and cams were in good shape. It seems that when a hardened steel
camshaft spins in an aluminum journal, the steel wears, not the aluminum, so my head was
OK after all. I replaced all the bearings, the oil pump, and the clutch, then finished
assembling the bottom end.
Rather than going one oversize on the stock pistons, I pulled the
pistons off of a junked XJ600 SECA motor, as they are lighter and stronger. After boring
the cylinders 1.5mm over, I found they worked perfectly. My 528cc stock Seca now displaces
557cc, and sings clean all the way to 11500 RPM.
Next, I jetted the stock BS28 Mikuni's by raising the jet needle
1mm, changed to 37.5 pilot jets and 115 main jets. I also drilled out the slide vents to
2.2mm. It still seems to be running a bit lean, though.
I replaced the igniter box with one from an old XJ750, as it has a
slightly steeper advance curve that makes it all work real nice.
The front end is actually from an XJ400 that a co-worker traded me
for Honda parts.
As a final touch, I mounted the horns on the frame (where they
*should* be!), and filled their holes in the fairing with a pair of driving lights I got
from Checker on sale for $20. I named it "Peace" because it reminds me of the
Robot Assassin from the animated movie "Wizards", and also because that's how
riding it makes me feel.
Since the photo was taken, I have replaced the stock exhaust with 4
into 1 Kerker headers which are now obtainable only through luck and lots of tromping
through junkyards.
All totaled, I think I have about $850 into it.
Stu
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