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Dave,
I have two cars, both using BB/Chevy
power with Enderle bird fuel injection
on tunnel ram manifolds. I love the performance
but hate the way they start. There have
been times when I was sitting in the lanes
for a long time and I couldn't get the
car to start without having someone squirt
fuel in the hat. It's really a pain to
have to rely on someone to help you get
the car started. I just bought a couple
flapper valves from a well known Australian
fuel system company. These things really
seem to help. I guess I just wanted to
know if anyone in the states makes something
like this and if there are any problems
with using these?
Thanks,
Kerry Millet
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Kerry,
Flapper valves are available from fuel
injection companies as well as Earls and
other fitting companies. Do they work?
Sure. You just proved it. You could also
take it a step further if needed and add
a primer system for the FI. Two other
things you can do to help starting is
to make sure you shut off the system with
the shutoff valve and run the starter
on 24 volts. 24 volts really helps start
FI cars due to the faster cranking speed
and does not seem to bother the starter
life.
Have a safe race
Dave Koehler
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Dave,
I have been running a dual toilet EVM
system for about 12 years now. It has
always been real reliable and consistent.
It has been on three different motors,
the latest is a 540 BBC, fairly mild.
On this motor we have it set up at 1175
degrees on the EGT and feel we are pilled
about right. We want to step up to a 7.50
association and run with them, our car
currently runs low 7.60's. The car does
not pull real well at the top end, and
we assume due to a rich condition at high
speed. My question is this; how should
I set up a high speed lean out, do I open
it all the way, should I have a pill,
what pressure/RPM should I open it up,
how can I do it so it stays consistent
(so once it is set up at 7.50 it will
stay close to the number)?
Thanks for the info,
Keith Niemann
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Keith,
Without putting the system on the flow
bench I have no real idea what your system
is currently doing and therefore can't
give you a pat answer. Most engines need
less fuel above 6500, so put a pressure
gauge on the distribution block and run
up the rpm and see where the pressure
is at 5000, 6000, and so on. Choose your
spot and call your favorite FI company
and get a Hi speed with a jet holder set
up so that it opens close to the rpm spot
you want. Then you will need a jet to
regulate how much fuel gets dumped. A
small one probably around .050 to .060
is safe to start. The bigger the jet is
the more fuel that is bled back to the
tank, and the leaner the high-speed effect.
Now, having said all that, you may very
well find that with 540 cubic inches and
a small pump that is 12 years old you
may not have much excess fuel to work
with in a high speed mode.
Hope that helps a little
Have a safe race
Dave Koehler
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