I am thinking about purchasing an 11:1 piston and stage 1 cam in my '03 raptor after seeing a post about it the other day. I have a couple questions regarding the set up. I currently have a full yoshi comp system and k&n filter with jets. Should I strengthen the clutch to handle the added power of the piston? Also where could I find the piston? I kinda poked around in my new Dirt Wheels mag yesterday when it came in but really didnt find anything. Thank you all very much for any replies!

 

You need to call Bob Craycraft, or just go to there web site www.14mins.com

 

I'm running a 12.1 with a stage 1 cam and porting and I'm still with the stock clutch. I'm not a drag racer so if you are you might want to upgrade to a beefier clutch.

 

Craycraft did my head and jug work, I have a 12:1 with Hotcam Stage 2. I asked Bob about the clutch and he said that if I wasn't drag racing, the stock clutch would probably hold up. If it starts slipping, I will replace the basket and plates with GYT-R since they have a good reputation for reliability and I've heard mixed results about other clutch plates.

 

I drag quite a bit and had to change out my clutch and went with heavier springs of course.

 

In Craycrafts site, they quote 12.1, stage2. Question, will they do a 11.1, stage 1, port & polish? and if so I wonder how much cheaper it would be than the first mentioned?

 

It may be "slightly" different since you wouldn't "need" the springs and so on. You know how much the parts run, you are paying for the work. It just depends on how extensive of head work you want.....

"TOID"

 

I am sure that Craycraft would do it, HappaRap, and it would probably be cheaper because you might not need the Ferra valves and Kibblewhite springs...

 

It's much cheaper,and it is a good set up,mine runs strong as hell..

 

Did you feel a big difference in performance with the 12:1 comp?