2 questions:
1. With no other changes besides displacement, will a larger engine require leaner, richer or the same jetting as a smaller one? Example; a 250 and a 300 by several brands are sister motors with many shared parts.
2. Keihin jet numbers; are the size increments based on flow (area) of the orifice or drill bit size (diameter)?
1. With no other changes besides displacement, will a larger engine require leaner, richer or the same jetting as a smaller one? Example; a 250 and a 300 by several brands are sister motors with many shared parts.
2. Keihin jet numbers; are the size increments based on flow (area) of the orifice or drill bit size (diameter)?