cheap EGA

[Ed Mellinger]

re: Cheap EGA

Yeah, I know they're inaccurate... I scanned the diy-efi archive before
I posted... that's why I won't pay $150 for the K&N unit.  I'll probably
just buy the cheapest 3-wire sensor and hook it to my DVM.

With apologies to the intent of diy_efi, I'm setting up some fairly
primitive carbs on a 50 year old bike, so I just want to make sure I'm a
notch or two rich everywhere beyond half throttle.  Of course, there's
so much oil smoke in my exhaust, I'm not sure the sensor will work at
all!

re: Rotron supercharger

Cooling fans move air but they hardly compress it, even the big ones...
they work at a few *inches* of water column (1 inch WC = about .04
psi).  1 inch WC would force about 0.3% more mixture into your cylinders
at full throttle, hardly kick-butt performance.   Force feeding an
engine means compressing air, no two ways around it, and compressing it
by significant amounts.  Your comment about a slight postitive pressure
flow at low vehicle speeds causes me to suggest that you buy and install
a manifold vacuum gauge (or sensor)... they are entertaining and very
instructive (I have 'em in all my cars)... remember that in a normally
aspirated gas engine, there is negative pressure everywhere beyond your
throttle plate except, when your foot is all the way to the floor.

Ed