Vex it sounds like your analysis is right on. Check out what RB has been offering
for years now. Looks almost like what your describing.
They describe it here:
http://www.racingbeat.com/RX7-1975-1...tem/11488.html
The description talks about heat transfer being improved due to the grooves but
I wonder if thats some purposeful FUD and the real solution is along the lines
that your describing. It would all depend on exactly what they groove and
where I guess.
This is a great thread by the way.
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1980 GS stockport, Fat Nikki, RB Dual Facetfuel pumps, Holley regulator, RB Street port exhaust, 2GDFIS, MR2 MK I electric fans, 2G strut bar, relayed fans, lights and fuel pump, LEDs
Project Fat Nikki Budget 12A rebuild Video setup < $30.00