How many power orig. PX125

[Szasza]

Hello,

How to get more out of orig. px125

I do not want to replace cylinder

I do not want to replace the crankshaft

 

There is reason to modify the cylinder? How?

Exhaust sito plus is, it would be good for it?

Did SI24 carburator?

Any idea?

Szasza

[PhilLA]

No did not

[mika4real]

It's not worth the effort. What do you expect from tuning the original cylinder? Any other cylinder will have more power just plug and play than a heavily modified original 125 Cylinder, wich would also be a whole lot of extra work.

 

Just get a DR177 Kit, longer primary gear and a bigger main jet in the SI20. With this you will have a good amount of extra power and a still original looking and sounding engine.

 

Pipedesign managed to squeeze out almost 14HP from a 125 by rising the cylinder. They mention at least a bigger carburetor, but they probably modified the crank-shaft too. In fact they don't even say a word about wether it's still on rotary valve or already on reed valve. The exhaust port will be widened also. I still wouldn't want to ride this engine, it creates under 2HP before 5500RPM as you see in the chart at the bottom of their website. Overall this would be a lot of work with an expensive and noisy exhaust, creating an uncomfortable engine to ride.

 

http://www.pipedesign.de/auspuffanlagen/px-125/basic-star-px125.html

 

maybe someone here has experience with Sip Road on the px125, wich i would recommend over the crappy Sito+, but I assume any tuning exhaust isn't worth the money on a original cylinder.

Bearbeitet 13. Juni 2014 von mika4real