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Lynn,
it is a P-Port, which certainly adds to the MAP issue. I am
seeing that on the single rotor when the MAP connection is right at the rotor
housing, even with a 40thou hole. All I do is showing it on a boost gauge, it is
unredable below 1500RPM.
Fortunately, it is not an issue with a carb.
FWIW.
Richard Sohn
N2071U
----- Original Message -----
Sent: Saturday, May 12, 2007 8:49
AM
Subject: [FlyRotary] Re: EC2 smoke
question
That is outstanding HP, even on a California dyno. Any port pictures or
porting open and close figures?
Sounds like the one to replicate. A typical Weber intake system
from a race shop would be quite short. Not ideal for 6,000 RPM. Better at
9,500 to 10,000 RPM,
looking for 335 HP.
I remembered this from Go Karts, for small parts and even sections of
intake runner, fab the molds from kiddies modeling clay. Cast small parts in
epoxy and chopped roving or carbon fiber. Mold the intake flanges (aluminum)
right into epoxy and after a layer of epoxy has hardened, fiberglass tape wrap
the clay runner and around the flange and let it cure.
Wash out the clay in kerosene and a bucket. Parts molded against the
clay come out slick and shiny. Insides of runners fantastic. If the clay seems
too oily, let the mold dry for a few days before molding.
Lynn E. Hanover
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