Eton power upgrades?

[oldyeller]

Hey everybody I'm looking to add some power to our 04 Viper.We're not quite ready to go the full on race setup yet but I was wondering what was the best bang for the buck for a little more power and acceleration?The bike is currently totally stock except for suspension and the rider is 60lbs.

[newnick]

Mark and Billy should be able to help you best.

[markvette]

high compression head is pretty cheap and easy to install. give you a little more acceleration and better throttle response. of course the best hop up is pipe and clutch kit.

Mark

[oldyeller]

Mark we did have a high compression head on it.The dealer we bought it from milled the stock head down and reshaped it a little.I actually didn't think it really made that much difference.I'm not sure if a "true" aftermarket head would work better?..I'll have to see if I can find it and post some pics.The cranking pressure was very high with it though somewhere around 200 psi :eek2: I played a little with the roller wieghts once(removed 3) and it seemed much quicker off the line but had a hesitation when it shifted as I had removed too much wieght.I think lightening up the rollers a little would help?

[markvette]

better on these not to remove rollers but to put in lighter ones. 200psi and didnt fill a difference, sounds strange since stock compression is about 100psi. stock etons heads are not good to mill, polaris yes but not etons but i would have to see it.

Mark

[oldyeller]

Mark here are some pictures of the head.Ignore the one on the left in the top picture. I was comparing an Arctic Cat 90 head to a stock Viper head..Its the only picture I have of a stock Viper head.The two bottom pics are the one we have that is modified.

http://i45.photobucket.com/albums/f84/frdnut/IMG_0519.jpg
http://i45.photobucket.com/albums/f84/frdnut/IMG_2837.jpg
http://i45.photobucket.com/albums/f84/frdnut/IMG_2836.jpg