Suggestions please all and any Thanks..

[ChinaGhost]

I installed a TC-Motor Carb same intake size bigger air filter, along with Niome 2n1 Reed Kit, plastic reeds. (Carbo Fiber reeds are en route) I also windowed my piston too. Starts sounds good sorta... won't idle, also when throttling the gas the engine will not hit a high rpm and wind out stays steady at say 2200( just throwing number out no clue where rpms at). Anyone experience this or have a idea what possibly I did wrong? Thanks for any help

 

[Venice Motor Bikes]

Pictures of your setup will help

 

[ChinaGhost]

Pictures of your setup will help

I did change out the plastic reeds with the carbon fiber ones, same result. I did discover that when I windowed the piston it's not the same size as the intake port, and possibly causing a restriction? ( I'm not sure how that all works) which I will try to do today

 

[Venice Motor Bikes]

As a general rule... when you install a reed valve, you need to install bigger jets

 

[ChinaGhost]

As a general rule... when you install a reed valve, you need to install bigger jets

Thanks, the carb I got came with jets 65 to 85 every 5. I definitely will try again. The main jet is interchangeable? Or just the one by the float?

 

[Venice Motor Bikes]

My bad... those carbs only have one jet... (the first picture).
Keep trying a bigger jet until it runs good

 

[ChinaGhost]

My bad... those carbs only have one jet... (the first picture).
Keep trying a bigger jet until it runs good

Will do, thanks for the advice. Appreciated

 

[Greg58]

Did you take picture of the window in the piston? It doesn't have to be as wide as the port as long as it's taller than the port.

 

[Greg58]

Here's a single window piston, that window is way big for these engines, any thing close in height should work good.

 

[Greg58]

Remember it will still have the open area below the piston skirt at tdc to draw fuel as well.

 

[ChinaGhost]

My bad... those carbs only have one jet... (the first picture).
Keep trying a bigger jet until it runs good

Question I have is it seems that there is fuel getting to exhaust, what would that be from? Seems flooded but dry have to full throttle all times?

 

[Greg58]

I tune a carb by getting it running right at full throttle then adjust the needle for idle to mid range. If you change to a larger main jet you sometimes have to lower the needle to prevent a rich condition a lower rpm.

 

[ChinaGhost]

OK so I finally realized I windowed both sides of the piston, explains the flooding now that i think about it and realized I wasn't supposed to. T hanks everyone. Now to find a long connecting rod for the new piston I got