Porting a 2 smoke?

[oscaryu1]

Theoretically, it's:

Down on intake (too low = excess blowback thru carby)

Up on exhaust

Widen both.

Correct? Anyone enlighten me on anything else?

On my 36mm cylinder bore up head, I sorta widened the intake and exhaust, went just BARELY up on the exhaust (mainly polished), and for the intake, went down on the sides just a bit.

It runs terrific, it's not my goped that's pictured in the OT, it's another one.

Did I do it right?

 

[modelengineer]

The lower you make the intake, the less secondary compression you get (if it's a piston ported 2-stroke)

 

[Kenny_McCormic]

Simply raising the exhaust port about a rings worth is a really conservative fail proof method.

 

[freakboy]

Make intake rough and exhaust smooth as you can get it

 

[oscaryu1]

Well I lowered the intake a tad