I was wondering about what kind of porting people have on their raptors I've started to do a little porting and want to port my head and I was wondering about cutting the valve guides down to match the port sides, I was told that this is ok only if it is done with oversized valves in conjuntion. anyone have any thoughts, thanks

 

come on people can any one help me on this one please[img]i/expressions/face-icon-small-smile.gif[/img][img]i/expressions/face-icon-small-wink.gif[/img]

 

JMO, which doesn't mean a whole lot, I see no reason why you have to use over sized valves to run shorter guides.....grind away.[img]i/expressions/face-icon-small-wink.gif[/img]

 

left it up to Mr. Craycraft...

have done porting before on other bikes but wanted this bike to run exceptional.