MicroSquirt.com read only forum (Jan.15,2018)

Hello,

I have a Honda RS 250cc v-twin engine that I want to convert from Carbs to a Fuel Injection system. I have been told by some that it's not possible to fuel inject a two stroke because the oil in the fuel mix ruins the injectors. But I know there are snowmobile's that are two stroke with fuel injection.

It would appear the Microsquirt has the capibility to be programmed to allow it to work, but I am at a loss as to what else I would need or how to design the injection system.

Or am I going about this the wrong way?

Please help me, im so confused.

Joe

I don't know about the injectors ability to handle oil but those Snowmobiles with FI are probably oil injected as well which would eliminate the oil in the injector problem if it actually is one.

I spoke with Joe on the phone, but for others following along...

Joseph West wrote:Hello,

I have a Honda RS 250cc v-twin engine that I want to convert from Carbs to a Fuel Injection system. I have been told by some that it's not possible to fuel inject a two stroke because the oil in the fuel mix ruins the injectors. But I know there are snowmobile's that are two stroke with fuel injection.

Most fuel injectors do not have a problem with oil in the gasoline. RX-7 guys do this all the time.

It would appear the Microsquirt has the capibility to be programmed to allow it to work, but I am at a loss as to what else I would need or how to design the injection system.

Or am I going about this the wrong way?

Please help me, im so confused.

Joe

The short version is your best bet would be to adapt the fuel system - pump, injectors, throttle bodies, etc - off a factory EFI V-twin with a comparable amount of horsepower.