Jerry Hey wrote:

Paul,  This is my proposed  insert. (old drawing)  The part that goes
through the housing is 2.25  o.d.  The port, after grinding is a
rounded rectangle 1.5 in high and 1.75 in wide.  Thus the aluminum
insert wall thickness varies .375 in thick down to .075 depending on
where it is measured. Is this something I should be concerned about?
The wall thickness increases as the opening is blended down to the l.5"
bore size.    Anything else cause concern?    Thanks Jerry

A bit on the small side. My guess is around 200 HP at 6000 to 6500.

Paul Lamar
 
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