This article is from the Watercooled VWs General FAQ, by Jan Vandenbrande with numerous contributions by others.
A: Often yes. Here are some:
Remove grease cap from rear axle tool:
Adjustable pliers, screwdriver
Timing belt tensioner pulley tightening tool:
Bend a section of coat hanger into a U shape of the proper size for
the holes in the pulley. or (lousier) two nails & a screw driver.
Upper strut bolt tool:
Air impact wrench, or grab a socket with a vise grip with the allen key
through the top.
From [Ken_Tsai@qmgate.arc.nasa.gov]: The Oxygen Sensor Socket from Lisle
will work. The socket has a hex at the top so you can use a combination
wrench to loosen the strut nut while holding the center rod stationary
with a 6 or 7 mm allen wrench.
Spring Compressor:
ALL SUBSTITUTES ARE DANGEROUS! Buy the real thing for ~US$40.
Remove radio tool:
use a coat hanger, make 4 cuts, so each piece is a "U". Stick them in
the holes, and move the hanger pieces "out" to the left and right,
while pulling the radio out by the tape entrance.
Remove Valve Adjustment Shims:
For changing valve shims, a valve depressor is necessary, but the funny
special pliers are not. All that is needed is a small "jeweler's"
screwdriver. File the blade until it is narrow enough to fit flat into
the slot in the shim bucket. Then file it until there is a nice knife
edge on it. Depress the valve, and stick the screwdriver through the
slot on the bucket and under the shim at the same time. It will just pop
right out, though oftentimes it helps to wiggle the valve depressor
around to help out. [Borowski]
Pin Wrench:
From: tedcrum@garnet.berkeley.edu (Ted Crum): A pin wrench (pin spanner)
is needed change strut cartridges, adjust [W] cam belts, etc. I've used
this trick from Popular Science for years: Make a pin wrench from an
adjustable ("Crescent") wrench with two holes drilled into the sides of
the jaws, near the tips. With pins placed in these holes, it is a strong
adjustable pin wrench. A second set of bigger holes can go a little down
from the tips and further from the nut-turning faces:
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