Thinking about getting cool heads for my 90 quad racer cause that dam Raptor jumps a bike length between first and second gear(I get him top end tough).
Does those high compression domes help alot?
What cc domes should I get?
My Fatty pipe is touching the stock head, Will the cool heads fit with this pipe?
Any problems with it?
Thanks aolt, DK

 

THE COOL HEAD IS THE WAY TO GO PERIOD. WHEN YOU ORDER IT MAKE SURE YOU TELL THEM YOU WANT THE HIGH COMPRESSION RACE GAS DOME. YOU WILL HAVE TO RUN A OCTANE OF 105 OR MORE (I RECOMMEND LEADED RACE GAS FOR IT'S LUBRICATING PROPERTIES). THIS WILL BUMP UP YOUR HP SOME. WE HAVE A RAPTOR IN OUR FLEET AND WE HAVE YET TO FIND A 250R THAT CAN BEAT IT IN A DRAG RACE, AND OUR 250'S ARE QUITE WORKED AND THE RAPTOR IS STOCK. HELL THE RAPTOR GIVES ME ONE HELL OF A RUN OFF THE LINE.

 

Cool heads add 70% better cooling, and produce more horse power. I would recomend going with a dome that you can still use pumpgas or 50:50 mix of race gas and pump gas. The price of Gas is going up and so is race gas. Should be able to go with a 20cc dome depending on your elevation. The lower the cc dome the more compression you get and that gives you better bottom to mid. The higher cc dome gives you less compression which in turn gives you more mid to top. If you have any other questions just ask and I would be more than happy to help you.