188cc big bore finally done now new problem.  By  jjt (Read 555 times)

so its a normal piston and head with a spacer under it yea?
ok so you need to fit the piston portion of the shroud and the fan portion separate,
leave a gap.
the easiest way is to the simply close the gap with some heavy duty gorilla tape and cut it when you need to remove the shroud.

a better way would be to use some aluminum flashing and rivet a doubled over strip to the
fan portion. drill two holes in the extension and pop on some clip nuts.

either way can look and work very nice if you're careful

(ps) you need a clocking adapter for your carb
maybe not this particular one but something like it.

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