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Re: Throttle Body Injection for 50 Yr. Old Farmall
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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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