Well, I'm throwing in the kibblewhite valves on my YZF250 soon. I have three questions though.
1) Manual says whenever you change valves, that it is necessary to put in new valve guides. Has everyone here done that when they've swapped vavles? If the clearances are still with in spec, I don't see any reason to do that.
2) Valve guides gotta be reamed before installation to get the proper clearance. I work at a machine shop, and it would be much easier to setup some jaws on a manual and ream the guides before installing them than reaming them when they are in the head. Question is, will I get much fluctuation after I press them into the head? Wouldn't think so, but thought I'd ask someone that has experience with it.
3) Stock steal valve guides or aftermarket copper. Any preferences?
I need to pick up a valve guide remover, valve guide installer, and some reamers to do the job as well. Any good sources to pick these tools up at?
Thanks for any info given, you can have a drink on me :cool:
1) Manual says whenever you change valves, that it is necessary to put in new valve guides. Has everyone here done that when they've swapped vavles? If the clearances are still with in spec, I don't see any reason to do that.
2) Valve guides gotta be reamed before installation to get the proper clearance. I work at a machine shop, and it would be much easier to setup some jaws on a manual and ream the guides before installing them than reaming them when they are in the head. Question is, will I get much fluctuation after I press them into the head? Wouldn't think so, but thought I'd ask someone that has experience with it.
3) Stock steal valve guides or aftermarket copper. Any preferences?
I need to pick up a valve guide remover, valve guide installer, and some reamers to do the job as well. Any good sources to pick these tools up at?
Thanks for any info given, you can have a drink on me :cool: