White Brothers and Web cams has Black Diamond 30 mm and 31 mm After market
intake valves. They don't have the 32 mm intake valve thou.

Last time I talked with Trinity they were still working on a cam that they said would
work well in the 686 and very well in the 720. Not sure about the stock motor, I'm
sure Raptor720 knows more about this??

 

Trinity is working on various cams for the applications. Clearly one cam does not fit all.

On the valves, I believe that Trinity is the only company that carries Ferrea valves for the Raptor. They are a Wholesale Direct Distributor for the valves. I have run some other brands and paid the price when they came apart. I will only use Ferrea in my machines.

On the valve seats, the reason why it looks like the seat is getting pounded is because of the valve bounce caused by the weak single springs. I have yet to see one Ferrea Stainless valved Raptor that uses good double springs showing signs of damaged valve seats. Not one. That does not mean it is not possible -- I just have not seen it.

On the MegaCycle cams, I am sure they are just fine -- except, watch the total valve lift. Depending on the Springs you use, you could easily have coil bind, or have the retainers crush your stem seals. I am talking cams over .400" lift. Also, without big valves, I seriously doubt that a lift over .320-.350 will do anything except cause excessive valve train wear. Your stock valve head does not flow about .320" lift.