September 1999
by Lee Meyer |
|
Last
month, I began a somewhat ambitious project--to fix up this
old Kawasaki GPZ1100 and make a decent rider out of it for a
total cost of about a thousand bucks. Well, things haven't
gone exactly as planned. I've been advising people against
taking on a project like this for years and here's
why... It seems for every
one thing I fix on this old Kaw, I find a couple more
problems. First, I dealt with the obvious problems. I gave
the machine a good bath and to my surprise it cleaned up
pretty good, shiny paint even. Then I tossed the worn out
cheap chain and installed a new o-ring type. Next, the front
brakes. Both calipers were seized and the pads worn out. I
took them off, completely disassembled and thoroughly
cleaned them out. If the rubber seals were in decent shape
they could be reused, they were, so I did--assembled with
some new brake pads and fresh fluid they worked like
new. Next, a battery
was in order. This nearly gave me a stroke. The correct
battery has an acid level sensor in it with a little wire
coming out of it that connects into the bikes wiring
harness. Apparently this stupid little sensor makes a
battery worth $122.95. Yikes! Gotta have a battery so grin
and bear it. With the new battery in and the bike running at
its 4,000 rpm(!) idle, the charging system checked out fine
at 14.5 volts. Then I removed the
spark plugs and checked the compression. This was the next
day and the engine was cold so the readings were a little
low but still okay at 125 psi per hole. Now it was time to
adjust the valves and replace the leaky valve cover gaskets
and seals. Since the engine appeared to be leaking from
kinda everywhere I checked and re-torqued the head bolts as
well. I found five valves with zero clearance and changed
shims to bring them back in spec. After closing the engine
up with new gaskets it was time to change the oil &
filter. Well, the rusty header pipe was of course totally
blocking removal of the oil filter. I had already planned on
removing the pipe for sandblasting and painting--just not
right this minute, so when reinstalling it I reused the
exhaust gaskets. I'll get new ones after I paint the pipe.
Okay now it's time
to sync the throttle bodies pretty much the same as the
carbs. I hooked up a sync gauge and started it up. The beast
still didn't idle too well and throttle response was very
delayed, so I cracked it open and maybe two seconds later
the engine revved. The sync gauges read zero, that means
major vacuum leaks somewhere. Any good spray contact or
brake cleaner makes an easy vacuum leak detector as long as
its flammable. A few quick sprays around the intake
manifolds made the engine RPMs soar--big leakage found. Off
to the parts store I go. A couple days and another few bucks
later the new intake manifolds were on and it was time to
try the synchronizing thing again. After some adjustments
the old Kawi now had throttle response and a better although
still not great idle. The bike was now
rideable, but some other problems sprang up. Oil leaks. Now
that I've run the bike for some time the leakage has begun.
The shift shaft seal has become worthless over time and
drips. My valve cover gaskets are leak free, however
re-torqueing the head did nothing to slow down the dripping
from the too far gone head and cylinder base gaskets. Also
the right fork seal has started to leak as well. Then, there
are the steering head bearings, while riding I noticed they
were starting to get notchy. I had to go do
some math. As suspected the tight budget was used up. For
all these parts--chain, brake pads, battery, intakes,
gaskets and seals, oil and filters, spark plugs, chemicals
and a mirror and blinker, I had spent $419.38. This brings
the grand total to $1,026.38. And I'm not done yet. To
re-gasket the whole engine and fix the forks and steering
would cost another couple hundred easily and be very time
consuming. It's time to reevaluate my commitment to this
project. Repaired and functional, the bike is worth about
1500 bucks. As is maybe I could get my dough out of it,
about $1,100. At this point, I really don't know what I'm
going to do with it. Some deep thought is in order. I'll let
you know next month. If any of you have some thoughts, I'm
listening. Later, Doc M.M.M.
* This article originally
appeared in the September
1999 issue of Minnesota
Motorcycle Monthly.