Blaster Single carb Blaster tuning

[GReenANt]

New to me blaster. runs nearly perfect except dies when going from idle to full throttle.

if you crack it open just a hair then punch it no issues. or on and off throttle once on plane no problems.

disassembled carb to fix a stuck needle valve. all the gaskets looked ok and it has a 122.5 pilot and a 145 main jet. The ski is stock 44mm single I believe with a factory limited pipe.

Low speed adjuster was 1 turn out high speed adjuster was 2 1/8th turns out.

I plan to get a rebuild kit and pop-off tester soon but its running so closely to perfect i think some tweaks should get it by the next couple weeks.

Any Ideas.

also compression was 140 front and 125 rear. not ideal but not terrible in my eyes.

 

[Dustin Mustangs]

There are instruction for that pipe on the factory pipe website. See where you are at jetting wise compared to what they call for. I prefer a slightly lower pop-off than what they recommend, even with a stock f/a.

 

[CEMotorsports]

You might want to rethink those comp #'s 150psi is stock in my opinion 140 is getting pretty low 125,is bad....

 

[Screwy]

i agree...usually 2 strokes won't even run under 100 psi. only 25 psi over the min in my eyes, time for a top end freshening up

 

[RoTAxGreNade]

It's not so much your compression number as it is the difference between the two - too many variables between testers ( calibration, has it been drop checked, are the schrader valves clean etc).
If you think it's running perfect, wait till you get those holes fixed right - night and day difference with proper comprssion