[FlyRotary] Re: Ellison vs EFI
In a message dated 12/17/2004 7:18:36 AM
Central Standard Time,
kenpowell@comcast.net writes:
<< I am currently running a 48 Weber, I did have a 51 Weber and
there was a
definite loss in power dropping to the 48.
There are ways to control the mixture on a Weber if
interested.
I am considering playing with fuel injection but I plan on
using a Weber as
the throttle body so the if anything goes wrong with the injection I
can just
flip a switch and change over to the carb.
Ken
>>
I am interested in anything you come up with injection wise. Also
leaning
under power is of interest. We use a 48MM IDA with 38MM chokes.
Thank you.
Lynn E. Hanover
Yes I think the 48 is best for a car
as there are lots of bottom end flat spots on the 51.
There is a system used on snowmobiles
that uses bleed air from the Venturi to the float bole but I have not
looked into it really well but plan on it.
The system I use is a controllable
air ram, with the ram closed the air is drawn totally from the air
cleaner in which the float bole vent is located but when the air ram
is opened it creates a higher pressure in the Venturi so they draw
less fuel through the main jets, note that the ram tubes are located
about an inch and a half from the velocity stacks.
I have the ram lever next to the
throttle lever, at full throttle it will take full ram but if I pull
the throttle back without pulling the ram back it will kill the
engine, when I pull the power back for cruise I push in the ram until
the rpm drops and then pull it back till it peaks.
At 15000 ft this ram will make 1000
rpm difference.
Ken Welter
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