4 Valve Head

royallthefourth · Post by **royallthefourth** » Mon Mar 11, 2013 5:31 pm

Anyone installed a 4-valve head?
Any thoughts on performance, impact on reliability, and difficulty of the task? I'm thinking of getting this later this year if it's not a terrible idea for some reason.

http://www.provoscooter.com/ruima-4-val ... d-gy6.html

Tocsik · Post by **Tocsik** » Mon Mar 11, 2013 6:54 pm

Nothing constructive to add here, just Ay Carumba! Mucho dinero!

skully93 · Post by **skully93** » Mon Mar 11, 2013 7:28 pm

seems interesting if you were rebuilding anyway, but I dunno if I would go gangbusters for it

Throwback7R · Post by **Throwback7R** » Mon Mar 11, 2013 11:01 pm

It seems that some of the ruckus guys are running the 4 valve head. Not all of them had luck with it I know it is a stock head on some model somewhere. They also say the 2 valve head gives out more torque and does not rev as high. Hopefully you have the 4 valve Piston .. remember that the one that is stock is only for 2 valves !

Hopefully that helps some people

CEZ2011 · Post by **CEZ2011** » Mon Mar 11, 2013 11:22 pm

Not sure you would really gain much in terms of performance. You would need to make changes to the carb and pipe to take advantage of the heads better flow. As the other poster said you would need too swap piston as well but if you had to rebuild anyway it could be a fun project.