727 powered Harley?

[Doug Mansfield]

Let me first make a quick introduction.  My name is Doug Mansfield and
I am working on a design project at Ohio University's College of Mechanical
Engineering.  This design project involes either building or adapting EFI
to a 1981 Harley Davidson Sportster.  After exploring the options of
building a complete system, I have decided to forgo it and simply adapt an
existing system.

The engine is a 1L 45 degree V-twin.  I makes about 50-55HP.  It shares a
single 40mm carb currently.  I will continue to use a throttle body type of
setup.  It is air cooled with a dry sump oil system.

This is what I have been considering.  I want to use a GM 727 from a 4
cylinder 2.5L engine.

I will not use/need:
EGR
canister purge
A/C
air pump
spark control
gear select
speed sensor
idle control

Basically I want to use my current electronic ignition module for the
reference pulse (there are two pulses per revolution, it is a wasted spark
system that I am using in a single spark mode.  I can explain that better
if needed).  I have a analog pulse coming out twice each rev.  I would need
to convert that to digital and use it for my reference pulse.

All I want if fuel control using the basic speed desnsity inputs.

Before I start really digging into this, I wanted to get some opinions of
the collective.  So am I on the right track, or will this fail?


Doug