The factory changed the front cam base diameter while developing the TR2
because of cam failures. I strongly suggest the use of blanks or billet
cam blanks. A reduced regrind (not Larry's) cost us a yearly divisional SCCA
title, and if the cam fails in two places, it will also fall down between
the block and crank, which usually trashes the motor.
Hardy
FWIW, Larry offers either regrinds on stock cores, or new grinds on blanks
he sources from the UK. On the regrinds, they have to cut into the shaft
itself in the thicker section near the front. Haven't heard of anyone
breaking one, but the factory supposedly added that thicker section because
they saw excessive flex, so I opted for a new blank.
I would also strongly recommend an overdrive.
-- Randall
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