72cc looking to run 9.1 gears

[scottinscotty]

you are talking about they kymco zx rear pulley sub assy. right? ... i think it's KS9E07DP2301A part# and like 44 bucks...

[fastplastic]

now is that one better then the gy6 cheap Chinese ones?

[maddog]

you need to read up on the complele dio conversion.

[Ricerider]

what 72cc kit are you running?

[scottinscotty]

polini contessa

[maddog]

cut the piston skirts and it turns into a corsa=its a poor boy trick

[Trafficjamz]

polini contessa

contesta ?

[fastplastic]

cortessa???

[scottinscotty]

contesta, contessa, cortesa.. whatever.. you wanna call it'.. so how far up do you cut the skirts?
and isn't the corsa aluminum?

[fastplastic]

nope same kits different port jobs mine is a contessa with port work done to it

[Trafficjamz]

contesta, contessa, cortesa.. whatever.. you wanna call it'.. so how far up do you cut the skirts?
and isn't the corsa aluminum?

Let me give you some good advice.

Don't take Maddog's advice too seriously

I have seen a corsa and contesta piston side by side and the have the same skirts.

The difference is in the port timing and angles

[evilone]

WHAT? I bought a contesta . I was going to cut the piston skirt, making it a corsa, and save alot of money.

[scottinscotty]

wow... i dont' think i'd have the heart to cut up my kit anyways'... it rocks the way it is...

[Trafficjamz]

WHAT? I bought a contesta . I was going to cut the piston skirt, making it a corsa, and save alot of money.

Do some port work to the exhaust port (wider and slightly taller)

That will make it perform more like the corsa.

Fastplastic has a ported contesta the outperforms two corsa builds we have done
although..........he does have a very nice rare PG pipe to go with it too.

[evilone]

trafficjamz, i knew about the porting. Just calling on maddogs comment. I did buy a contesta for this build but not porting it...i'll just get a corsa if needed.