Px 150 2011 tuning advice- sip staff?

Hi All

I have a new 2011 PX 150 and I want to gain some extra power without having to split the crankcases.

What is the best tuning cylinder I can fit without having to modify crankcases/transfer ports etc?

I already have a 24/24 carb and a sito plus exhaust which I will fit when I upgrade the cylinder.

What sort of performance gains can I expect when I use these upgrades?

Please let me know your advice.

Many Thanks.

Hi, can anyone offer me some advice please?

[quote user="Vespisti1"]

I suggest a Polini 177 kit and with a 22 COGS cosa clutch for a 10% upgear + match carburator box botom to your bigger carburator. Jetting 150 air, BE5 mixer, 128 - 125 main. with the sito+ you will get to 100KMH (105-110 on the speedo)

Good luck

 

[/quote]

 

Hi, thanks for the advice. Can you please tell me what you mean by match carb box bottom to the bigger carb? Is the bigger carb not a straight bolt on?

BTW, On road trips, don't forget to premix an additional 1% to be safe. Since you still have the 125/150CC oil mix gear. The way to fix this is in the link below, but you 'd need to sign up at stellaspeed,

http://forums.stellaspeed.com/viewtopic.php?f=15&t=11170&hilit=oil+pump&start=20

http://picasaweb.google.com/Vespisti1/VariousPXPics#5311942966748296418

Your 150's carb box is set for a 20mm carb throat. When you bolt on a 24mm carburator over it, the carb. box is a bottleneck since the area of the admission of the carb box below the carb is smaller than the carb venturi's (throat).

It is useless to mount a 24/24 over a 150 carb box if you don't enlarge its opening and then cut the gasket's hole bigger.

 

 

I suggest a Polini 177 kit and with a 22 COGS cosa clutch for a 10% upgear + match carburator box botom to your bigger carburator. Jetting 150 air, BE5 mixer, 128 - 125 main. with the sito+ you will get to 100KMH (105-110 on the speedo)

Good luck