adrian101
Member
Well recently i purchased the "Billet Aluminium 70cc Performance Head" from rocksolid engines and thought i should do a review on here to tell you guy's about the pro's and cons of the head.
What I've notice so far with the billet head is the difference in compression. With the stock standard head the PSI was (115), now my engine has PSI (122). The billet head has given my engine a more beefer sound and has increased throttle response by around 30%.
With the standard head i was having trouble with my engine bogging down due to the gear ratio as i am 110kg's and i have a 36t sprocket on the bike. basically my engine had NO B#LLS to move me lol now with the billet head it doesn't have a problem moving my fat a#s I can't believe that a change of the head could increase the performance so much. Speed gain is an extra 5km/h which makes my top speed now 61km/h (i know people on here have better speeds but still, its an increase for me).
The only cons is the increased heat of the engine. as there are less air fins then the standard head it heats up more. I fixed the problem by using a richer mix and changing the needle settings to rich. I Have also had 3 blown exhaust manifolds. I don't know if it is caused by the billet head or not. I'm guessing it is due to compression but i don't know. I now have a copper Exhaust manifold Mwahahaha . one other problem was piston slap (when spark plug hits piston) which was fixed with a slightly bigger head gasket.
I paid $109 which includes postage for the billet head. Do i believe it was worth it? Honestly yes. Apart from the cons which where easy fixes i have seen a big increase in performance.
I 100% approve this product and think whoever made it is a genius lol I thank him!
What I've notice so far with the billet head is the difference in compression. With the stock standard head the PSI was (115), now my engine has PSI (122). The billet head has given my engine a more beefer sound and has increased throttle response by around 30%.
With the standard head i was having trouble with my engine bogging down due to the gear ratio as i am 110kg's and i have a 36t sprocket on the bike. basically my engine had NO B#LLS to move me lol now with the billet head it doesn't have a problem moving my fat a#s I can't believe that a change of the head could increase the performance so much. Speed gain is an extra 5km/h which makes my top speed now 61km/h (i know people on here have better speeds but still, its an increase for me).
The only cons is the increased heat of the engine. as there are less air fins then the standard head it heats up more. I fixed the problem by using a richer mix and changing the needle settings to rich. I Have also had 3 blown exhaust manifolds. I don't know if it is caused by the billet head or not. I'm guessing it is due to compression but i don't know. I now have a copper Exhaust manifold Mwahahaha . one other problem was piston slap (when spark plug hits piston) which was fixed with a slightly bigger head gasket.
I paid $109 which includes postage for the billet head. Do i believe it was worth it? Honestly yes. Apart from the cons which where easy fixes i have seen a big increase in performance.
I 100% approve this product and think whoever made it is a genius lol I thank him!