BRITISH CAR magazine had a 'How-To' article on adding fuel injection
to a MGB about two years ago. All the parts were scavenged from a
junk yard. If I remember right, the fuel injection unit was a Bosch
from a 4cyl Fuego and no software coding was needed. This article
might apply to Alpines. It was in the June and August 1995 issues
which are still available.
Jeff
______________________________ Reply Separator _________________________________
Subject: RE: EFI in Alpine (was RE: fires in the car)
Author: "G. Wilson" <gawilson(at)VNET.IBM.COM> at INTERNET
Date: 4/28/97 1:22 PM
I received this very interesting note from Jarrid about his EFI Alpine
and he gave me permission to share it.
--gale
------------------------------
>Jarrid,
>If you don't mind belated question, how'd you do EFI in the Alpine?
>
>Thanks,
>gale
I built a manifold from a series II piece. Mods included welding some
bosses for the injectors to point toward the intake valves.
The system used 4 injectors, and was phase sequential (1and4)
injectors fire simultaneously, followed by (2and3).
The control was done using some custom circuitry along with an
off the shelf embedded computer, with my own software written in
assembly
language.
My system used an O2 sensor for monitoring the air fuel ratio, and
used this signal for feedback, which after several seconds of running
poorly, will allow the engine to receive the correct mixture again.
This feature helped when I drove the car at high
altitude.
The package I designed included a graphical engine monitor
that runs on a laptop, and allows me to tune the engine without
even popping the
hood.
I used off the shelf fuel injectors and GM
sensors.
I got the fuel pump and air door at a local bone
yard.
Along with a pretty stout camshaft, the motor produces about
120BHP.
I now have reverted to carbs "dual twin choke webers", but I will be
modifying this new manifold for injector bosses that will allow me
to run carbs or EFI.
It is possible to buy off the shelf computers, EFI webers ECT to do
effectively what I have done, but his would cost in excess of $2000,
and I really only have about $100 invested in my system if you
ignore design and software time.
Cheers,
Jarrid
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