BTW guys this prototype casting is a bit rough looking. The final castings
will have a much better finish.

Here is how its done. The hole in the outer wall of the runner is
just large enough to get the bolt in there and tightened with
an Allen or hex socket head  wrench. Then an aluminum plug is
screwed into the taped hole to seal it.

Paul Lamar

     Paul,

      Modification for 13BREW and 13B Cosmo should be at front end (rear
 in A/C) of engine IMHO.

      Kelly

 
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