- Location
- Minnesota
Hey guys, this winter tore apart my old 650 motor and have replaced every part with any upgraded parts I could get my hands on. I bead blasted and powder coated just about everything I could.
Bottom line
My new motor is a ported cylinders with new sleeves on a stock bore with a high compression head and is 210 psi front and 207Psi rear. I have a dual intake manifold and two Buckshot Mikuni 44s. I was thinking about breaking in the motor with just the single but I don't have any idea what to do with jetting and fuel octane past 180psi. Could someone please offer me some advice?
I tried to break in the motor today with 92 octane and a single Mikuni buckshot 44, I didn't check the compression before I tried. I figured it HAD to be under 180.
I ran a 50/1 ratio of Maxima super M. The settings on the carb are as follows...
N/S 2.3
Spring color- Normal silver
Low Jet - 120
High Jet - 125
Running a Solas 13/18 pitch impeller also.
I got the ski to idle by adjusting the low speed knob. I had to idle and then slowly pull the throttle to get up to a speed where I could stand. Top speed felt like my friends bone stock machine. Maybe a little slower. Pushing the primer button while holding the throttle down gave it a lot more speed for a few seconds.
Can someone please help me get in the ball-park of what gas octane/ jets/ pop off pressure I need? I was running a single but i have matching buckshot mikuni 44's and a R&D 44 mikuni dual intake manifold. I just thought it would be better to break in the motor with a single because i've never used duals before.
Any advice anyone? Please?
Bottom line
My new motor is a ported cylinders with new sleeves on a stock bore with a high compression head and is 210 psi front and 207Psi rear. I have a dual intake manifold and two Buckshot Mikuni 44s. I was thinking about breaking in the motor with just the single but I don't have any idea what to do with jetting and fuel octane past 180psi. Could someone please offer me some advice?
I tried to break in the motor today with 92 octane and a single Mikuni buckshot 44, I didn't check the compression before I tried. I figured it HAD to be under 180.
I ran a 50/1 ratio of Maxima super M. The settings on the carb are as follows...
N/S 2.3
Spring color- Normal silver
Low Jet - 120
High Jet - 125
Running a Solas 13/18 pitch impeller also.
I got the ski to idle by adjusting the low speed knob. I had to idle and then slowly pull the throttle to get up to a speed where I could stand. Top speed felt like my friends bone stock machine. Maybe a little slower. Pushing the primer button while holding the throttle down gave it a lot more speed for a few seconds.
Can someone please help me get in the ball-park of what gas octane/ jets/ pop off pressure I need? I was running a single but i have matching buckshot mikuni 44's and a R&D 44 mikuni dual intake manifold. I just thought it would be better to break in the motor with a single because i've never used duals before.
Any advice anyone? Please?