Page 1 of 1

4 Valve Head

Posted: Mon Mar 11, 2013 5:31 pm
by royallthefourth
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

Posted: Mon Mar 11, 2013 6:54 pm
by Tocsik
Nothing constructive to add here, just Ay Carumba! Mucho dinero!

Posted: Mon Mar 11, 2013 7:28 pm
by skully93
seems interesting if you were rebuilding anyway, but I dunno if I would go gangbusters for it

Posted: Mon Mar 11, 2013 11:01 pm
by Throwback7R
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

Posted: Mon Mar 11, 2013 11:22 pm
by CEZ2011
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.