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| Tractor Talk Discussion Forum |
Topic: More on fuel injection.
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| David G
09-02-2012 18:28:16
205.215.206.18
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I am wondering if a throttle body fuel injector would work upside down like an updraft carburetor.Ideas?
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| David G
09-03-2012 08:11:42
205.215.206.18
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Re: More on fuel injection. in reply to David G, 09-02-2012 18:28:16
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| It looks like I will go with a separate injector(s) and a throttle body. I bought 2 on ebay last night, one with a throttle servo and one without. I think I can make an electronic governor on the one with the servo.
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| Sprint 6
09-03-2012 06:35:07
50.102.24.66
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Re: More on fuel injection. in reply to David G, 09-02-2012 18:28:16
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| I doubt you could get proper atomization. GM TBI operates at a low 9-13 psi, I don't know if that is enough pressure to to spray the fuel up, I would expect a lot of drop out, as the vacuum is low on the injector side of the throttle blade. The small injector TBI operates at a higher 22-32 psi, that might be enough. It would be worth a try.
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| Bob M
09-02-2012 18:49:07
74.67.190.208
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Re: More on fuel injection. in reply to David G, 09-02-2012 18:28:16
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| Since the fuel supply is under constant pressure I can see no reason why it would not(!)
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| Buzzman72
09-03-2012 06:33:15
74.129.194.231
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Re: More on fuel injection. in reply to Bob M, 09-02-2012 18:49:07
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| | I'm with Bob on this one. The injector doesn't pressurize the fuel; that's done by the pump, and the pressure controlled by the pressure regulator. The injector itself is basically a pintle valve. MY questions on fuel injection concern a 6-cylinder IH truck engine. Since the intake ports are siamesed--and since the engine only runs 3600-3800 rpm--why couldn't you get by with running only 3 injectors? I'm thinking it would work; you'd simply have to trigger each injector on every crank revolution, instead of every other revolution. Anyone out there experienced enough to tell me why I'm right...or wrong?
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