I would like to look into a propane injection system. Are there any harmful sides to it or can my 7.3 use it without any problems? Is there a particular brand or setup that you would recomend or have had good experience with? I guess any advice would be helpful to me right now since i don't know much about it. Thanks
I was thinking of doing a home-brewed propane injection for a bit more power myself. What I've been looking at is the Impco T-60 Beam regulator with the vacuum lockoff feature. This regulator is commonly used for running small to medium-sized generators - up to 60 HP - on propane.
The way the T60 regulator is designed it has a gas inlet port and a gas outlet port, but it also has a third port to control gas flow. The third port hooks up to a vacuum source from the engine's intake manifold and uses engine vacuum to meter the fuel. Higher RPMs=higher vacuum=higer rate of gas flow. Conversely as the RPMS drop, the vacuum drops and the flow of propane is reduced. No vacuum (engine off) and the regulator acts as a lockoff and allows no gas to flow from the outlet. Basically a demand-based metering system.
My idea is to hook the regulator up to my propane tank using a first-stage adjustable regulator at the tank, and the Beam T60 as a secondary regulator. For the actual injection part of the system I'm thinking of a pipe with orifaces installed in the air cleaner inlet to ensure it mixes well with the incoming air. With the adjustability of the Beam regulator, and the adjustable first stage regulator at the tank, I think I should be able to "tweak" it easily enough to get a decent performance boost without over-fueling and melting the engine.
Naturally I plan on installing an pyrometer to monitor EGTs and help me with the tweaking process. Anybody see any drawbacks to this idea?
Last edited by CheaperJeeper; 10-29-2006 at 01:37 AM.