Re: Throttle Body Injection for 50 Yr. Old Farmall

Posted by Jim Allen on September 08, 2005 at 05:36:30 from (209.173.160.22):

In Reply to: Throttle Body Injection for 50 Yr. Old Farmalls? posted by Bill in NC on September 07, 2005 at 11:48:43:

A retrofit TBI injection system could be made
to work quite well on an old tractor, but you'd
have to have a stand alone, programmable
ECU and a lot of time with a laptop to dial it in.
You'd also have to address the archaic
ignition system that most old tractors use and
have some way to better map ignition timing
curves... possibly with a retrofit distributorless
ignition system . This would be a fair bit of
work and the best results, or maybe just
SATISFACTORY results, would require a lot of
effort. I have participated in the installation of a
lot of retrofit EFI systems on trucks and 4x4s.
Most of them have a technology and
level-of-difficulty curve that are not clearly
ilustrated in the magazine stories or the ad
hype. There are some VERY important little
tips, such as the placement of the electric fuel
pump to avoid fuel shear. The biggest issue
would be programming because these old
tractor powerplants have such a radically
different power curve than the average car or
truck engine. You'd have a chance that a
"generic" program might work OK for the
"average" car, but would be totally unsuitable
for a low revving, long stroke, big displacemnt
tractor engine. Thee would also be issues of
properly protecting the electronics from the
environment. It would be a fun project, but not
an easy one.

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