Petes2Wheels
Full Member
Out riding the country roads
Posts: 102
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Post by Petes2Wheels on Mar 14, 2024 1:12:02 GMT -5
Hi all, crazy idea, can a fuel injection 400 engine be used to swap out on a old carby engine?
To be more precise, use the engine itself, but put a carby on a fuel injection engine?
As far as I can tell it is the same intake manifold, so a carby should fit straight into it. So just changing the way the fuel gets into the engine.
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Post by stevep on Mar 14, 2024 5:36:23 GMT -5
On the face of it yes, it's a simple idea since the motor is the motor and the fuel delivery system is all that you are changing. But I'm sure it gets complicated at the point where the electrical system is involved. Your 400 motor will have a generator and output wiring designed for the FI and specific electrical components supplied with a factory issued 400 EFI machine. Your recipient frame and wiring loom are designed to receive electrical input from the generator of a slightly different type configuration, with its specific output wires (number of wires/colour coding/type and number of connectors.)
Getting the two to align may require some kind of adaptor/sub-loom and therefore a high degree of electrical knowledge/experience.
In a nutshell: You'll need the wiring diagrams of both machines and a plan to integrate the EFI electrical output with the non EFI wiring loom.
Alternatively, you may be able to graft the stator plate/rotor from the non EFI onto the crankshaft of the formerly EFI motor and job done. Let's hope it's the latter.
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Petes2Wheels
Full Member
Out riding the country roads
Posts: 102
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Post by Petes2Wheels on Mar 14, 2024 21:11:28 GMT -5
Thought it could be done, just take a lot of research and fiddling around with. Someone asked me down under and wasn't sure
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Post by stevep on Mar 16, 2024 9:52:58 GMT -5
One thing to add: stators and rotors are matched to each other and can't be mixed.
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