Larger air intake tuning

[Johnny trigger]

Hello. I have the basic Chinese two-stroke bike set up. I added the offset intake and the velocity stack On the NT carb and fitted a biger cone filter. I assumed it meant more air so I slowly changed my jets bigger and bigger and I still have no WOT power. Should i have decreased the jet size instead.? I was running the plastic stock filter with some holes drilled into it and a 68 jet. And a 26-1 mix.Thanks

 

[curtisfox]

Just like food you stuff it in it has to go out the other end, try a better exhaust or open the stock one and see what happens first............Also try a Briggs lawn more foam first, in your air cleaner .... Curt

 

[Johnny trigger]

I have the banana pipe on there now....the stock intake setup is running fine its the upgrade that im having trouble with

 

[curtisfox]

Get ahold of Greg58 he is a 2 stroke man, do a spark plug check for color, would tell you if rich or lean.......Curt

 

[Johnny trigger]

Get ahold of Greg58 he is a 2 stroke man, do a spark plug check for color, would tell you if rich or lean.......Curt

Ill try . Thanks for your help

 

[curtisfox]

Look up spark plug color chart..........Curt

 

[Johnny trigger]

I have. Was a bit black around the bend of the electrode tip. Its an NGK plug.. i just assumed that bigger filter ment bigger jet... i suposse i can thrown in some smaller jets and test it out again.

 

[curtisfox]

Yep keep at it till you get right, have you looked through the trouble shooting section, lot of cures there in the past.....Curt

 

[Venice Motor Bikes]

Try one size smaller than stock jet... that's usually just about right.

Be careful not to go too small on the jet size, it will feel like more power but will be too lean & cause engine failure!!!!

 

[Johnny trigger]

I was running a 68. Maybe tomorow ill try my new intake with a 67. Thanks

 

[Bikeguy Joe]

Never assumer anything.....especially with the chinese bicycle motor.

 

[Bikeguy Joe]

BTW- Go to 40:1 THEN figure out your jetting.

You'll be amazed.

26:1? no.

 

[Johnny trigger]

BTW- Go to 40:1 THEN figure out your jetting.

You'll be amazed.

26:1? no.

Its still kinda new. Moved down to 26-1. Next tank ill go 36-1