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I use my low speed jet to get the throttle response

These are not cars people that revs up as the car speeds up When you grab the throttle the engine flares up in rpm and then the ski catches up. If your engine is tuned to get to its top rpm then its also right in the midrange it takes hp to get to that top rpm under load Every one that wants...

the tiny tach is 1 time every 2.5 secs not 2.5 times a second I havent tried a commercial one thats 2 times a second

pet 2100 here

Yay X10

Good to know

Maybe a west coast pipe for a 650 would be even better

I found on my ported 760 superjet 48novis , type 9 pipe , digital ignition that a 140 mag was to much for it yes i did alot of propp testing it just dragged the ski to the water to much and the boat felt heavy they chaged the rules in that class and i went back to a big hub with a tbm pump...

You will need a different intake the carb will work the intake is different

Finially some one making sense Does anyone wonder why they try and make two strokes a square bore to stroke ratio in all the gp bikes ?? Better power the tz 125 was never able to get a look in when it came to racing until they went square bore stroke ratio To over bore an engine to hell...

Yeah 4stroke runabouts would make better money There isnt any new x2,s bummer huh

I reckon he may do his chips on this deal By the time he gets shipping on it all etc there isnt going to be alot of profit left

Its a whole redesign on the bottom of the hull not just sponsons and a set back pump There is no reason for them to put the 760 the 701 is a great engine and you can modify it how you like awesome surf engine and great reliabilty

I have extra tubbies on my 08 hull a big thumbs up from me

Ok The 125gp bike do not have that I have built and raced enough rs125 engines to know that

Im making some exhaust divirters 180 each put them in your exhaust and add the step

Ok i didn't understand what you just said Maybe it over my head, i will not be trying this anytime soon but good luck to the people that try it, keep us updated

Ok not some thing i have done But when you consider that that the exhaust gases and fresh air goes out of the engine and into the exhaust not only will you be blocking new air in but also new air out

Its a decent gain Not going to guess at a % but its worth it for sure

anything that raises thermal efficiency is going to help your fuel economy the same goes for mechanical efficiency Things that improve your volumetric efficiency well that depends on the throttle loading Mechanical efficiency = anything that loads the engine from rotating thermal efficiency =...