Is anyone aware of what, if anything would need to be done to a F4i stock engine to be run on F4 carbs? is the spacing the same for the carbs to fit? Before you ask "why", it is for a mini-sprint application, where fuel injection is not allowed. ANy insight would be appreciated.

Thanks

 

I recently conveerted my f4 to an f4i so I did the verse of what you want to do. You can put the f4 carbs on the f4i motor and make it run. The motors are identical except the head and cam has provisions for a cam position sensor. all the plugs are identical though. I do have a set of carbs for a f4 if your interested send me a reply.