Hirth EFI unit on a Rotax 582?

4 posts in this topic

Posted

Man I would love to try one of these on my Rotax 582. Has anyone ever played with EFI on the 582?

 

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Posted

Funny enough I was talking to a mate today about wanting to do the exact same thing..... neither of us have any idea if it has been or if it can be done....

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Posted

Wonder if that is a mechanical fuel injection?   Kinda like my subaru which it is basically like a garden hose sprayer nozzle:  as you push the throttle body plate open it also opens the fuel sprayer nozzle.

That as opposed to a digital efi where it controls injectors via a computer,  automatically adjusting for engine temp, air temp, and pressure alt, ect.

The mechanical FI doesn't seem like too much of an advantage over carbs... except that you can incorporate a lean/rich mixture lever in there where it offsets the fuel nozzle position with respect to the throttle body as they move together.

I really dont know much about it.  Hopefully someone here who has tried it might chime in.  But seems like tuning for all the carb ranges might be difficult (rich at a certain rpm, lean at another..)  maybe more workable on a 4 stroke where a little lean here or there isn't as big of a deal.

 

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Posted

Mechanical fuel injection also has no Venturi, so therefore no possibility of ice.

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