What ski is this in? The pipe is fine with that engine, definitely not your problem. The issue I see is the popoff with the flame arrestor. Remove 2 screens and raise your popoff to 25 psi with a 95g spring. Also, if you're over 2 turns on your high or low speed screws, it's time to go up in jetting. Id try a 155 main..
theyre new aftermarket from mikuni with no choke and it came with t handles and im running a limited chamber
would a 10/16 be good?
Those are much better than the stock carbs. Your jetting sounds close. Your water and pipe tuning can affect the power output as well.. how do you have it set? Where are the screws set on the headpipe?
its setup like wamiltons with i think 5/8 open on bottom and mid and top closed, also have a fcv
10/16 hooker would work. But not all impellers are the same. The pitch is just 1 part of it. The root angle and blade thickness also matter too because that will determine how hard the impeller loads the pump. For bottom end and freestyle, skat impellers are very good..they're light and have a thinner blade for better acceleration. Solas impellers are heavier and thicker which will provide better top speed in most applications. A 9/15 solas is not the same as a 9/15 skat or hooker even though the pitch says the same thing. There's things you can do to loosen the pump a little without changing impellers. Open up the reduction nozzle, put a smaller pump cone on or adding shims behind the impeller will also loosen the pump. If you put shims behind yoir impeller and it gets better rhen that is a sign your impeller is too tall. Most impellers now have material removed inside the hub so the trailing edge blades are closer to the veins in the pump or a "setback" This improves efficiency but also increases the pump load. Ive been playing woth this on my ski.. I have 4mm thick of shims behind the impeller and that helped it a lot with bottom snap. But I need to go down in pitch so I can remove the shims and not loose the current pump tune.
Generally speaking, opening the bottom screw and closing the others will give better top end with a slight loss in bottom snap.. you might try the top screw open 1/2 turn with the others closed and see if it gets better.. there's many ways to set up yoir ski for different riding styles.. some guys run bigger carbs with big pilot jets that add lots of fuel down low for the bottom, and tune their pipe for top end. Just cracking the bottom screw..then the larger pilot jets and lots of timing down low cool the chamber for the bottom response and instant power off idle. This is more of a flatwater setup. It makes the power more on or off instead of a linear power delivery.
yeah im considering getting the 10/16 hooker but im seeing now theres a lot of other stuff you can do first
so if i get a 10/16 hooker it would perform better down low way better than the one from solas
