Building a Homemade Fuel-Injection System on a Briggs and Stratton 5 HP Engine (2023 Update)

replying to Ecnerwal, Jiix wrote: There are companies around that specialise in small engine efi systems, but on a lawnmower.... you would need it to be either electric start or have a charging system for 12 volts to run the unit ...www.ecotrons.com do 2 versions 50-300 cc and 400 to 800 cc if you wanted to have a kit..they are not exactly cheap, but speeduino.com do the same thing but cheaper. To run the ecu you would need to convert the rotary spark generator to become the crank position sensor, install a separate ignition system to make the spark instead, fit a fuel pump and replace the carb for a throttle body (replaces the carb and has the fuel injector installed in it)...you would have to do the tuning yourself to get the spark in the right time and then build a fuel map to deliver the right amount of fuel at the right revs and engine load.. I to am looking into this and thinking a single cylinder motorbike efi might be easier to convert and cheaper too

replying to Ecnerwal, Jiix wrote: There are companies around that specialise in small engine efi systems, but on a lawnmower.... you would need it to be either electric start or have a charging system for 12 volts to run the unit ...www.ecotrons.com do 2 versions 50-300 cc and 400 to 800 cc if you wanted to have a kit..they are not exactly cheap, but speeduino.com do the same thing but cheaper. To run the ecu you would need to convert the rotary spark generator to become the crank position sensor, install a separate ignition system to make the spark instead, fit a fuel pump and replace the carb for a throttle body (replaces the carb and has the fuel injector installed in it)...you would have to do the tuning yourself to get the spark in the right time and then build a fuel map to deliver the right amount of fuel at the right revs and engine load.. I to am looking into this and thinking a single cylinder motorbike efi might be easier to convert and cheaper too

replying to Rex B, com wrote: One does NOT need most of that.stuff and not anything electric.

"when we assume weake am ass out of you note" You realythink efi is the only thing?

replying to Rex B, com wrote: One does NOT need most of that.stuff and not anything electric.

"when we assume weake am ass out of you note" You realythink efi is the only thing?

"adapting" You obviously are very clueless making it sound so dramatic. Theres no adapting to be done for one thing. It's finding a way to drive it which is simple.

heard of a 555 injector system, for fixed speed (more or less) 1 cyl

A speeduino might be over the top but may be worth a look