| |
OLD IRON.....HERNIA SPECIALS Here's where it all really started.These old 1930's
motors were the first engines that set the standards for racing.Coverterted to run on
alcohol,these motors screamed.They look like pretty simple setups,but are actually very
precise motors.The work that goes into one to make it a good racer is quite
interesting.When I first thought about building one, I figured it'd be easy... after all,
I'm a Mercury master technition.Boy was I humbled.Turns out most of us nowadays mechanics
are really only parts replacers. To build one of these antique racers, you've got to be a
machinist/welder/mechanic/jack of all trades. For now I'm going to only focus on the 30
cubic inch class C motors.
SPEEDITWIN This 30 cubic inch
fishing machine really had to go thru some modifications to become an Alky C service. New
lower unit,short tower,Vacturi carb,High compression pistons, port work and a lot of
blueprinting. There were just tons of different add-on parts available for these
motors.Names like Wiseco, Hubbell, Eldridge,Goslee,Turner ...all had their hands in the
aftermarket business.
JOHNSON PR 30 cubes of raw
power.These motors were engineering showpieces. Some of this technology was far
ahead of it's time. Using a rotary valve to ram induct the fuel, the PR's
screamed!
EVINRUDE HEX HEAD Now that
Evinrude had access to the Johnson plans, they decided to make a rotary valve racer for
themselves.The first model, the 6038 had round heads, The later 6041 had the hexagonal
shaped heads.
|