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JimmyHoffa
04-14-2008, 12:50 PM
I'll be getting a yfz shortly, and I was wondering about a few things.

I'm switching from a TRX450r with SS valves, and I will probably put some in the YFZ when the time comes. However, the YFZ, I noticed, is sporting an aluminum-supported camshaft end. Has anyone ever heard of galling happening as a result of the increased spring pressures required for SS valves? (Note that cases of cam supports being over-torqued are NOT of interest to me.)

Also, will new valve seats be required? Assuming mine aren't trash, is the stock seat material suitable for SS valves?

thanks. Peace out.

JimmyHoffa
04-14-2008, 12:52 PM
BTW, if it matters, I'll be running either Kibblewhites or Factions.

JimmyHoffa
04-15-2008, 06:36 PM
Okay... I'll keep that in mind when I take care of the top end... *goes to the 450r forum and gets answers there*

are these things so reliable that people don't even know what's inside of them?