Intake valves only?

[Jake250ex]

Is it worth it to put in SS intake valves only on the 04? I know they get chewed up and I see complany selling parts to do the intake only.

[eastside 400]

you realize that all your valves are already SS, the 04-05 bikes have steel intake and Ex valves, 06+ have Ti intakes. If your valves are bad then replace them and get a valve job done to the seats

[Scro]

Originally posted by eastside 400
you realize that all your valves are already SS, the 04-05 bikes have steel intake and Ex valves, 06+ have Ti intakes. If your valves are bad then replace them and get a valve job done to the seats

Agreed. Make sure you have your seats cut. Otherwise, your valves won't last half as long.

[Rich250RRacer]

Originally posted by eastside 400
you realize that all your valves are already SS, the 04-05 bikes have steel intake and Ex valves, 06+ have Ti intakes. If your valves are bad then replace them and get a valve job done to the seats

I'm sure somebody here will correct me if I'm wrong, but I don't think 04-05 OEM valves are stainless steel, I believe they are just oxide coated steel.

[Scro]

Originally posted by Rich250RRacer
I'm sure somebody here will correct me if I'm wrong, but I don't think 04-05 OEM valves are stainless steel, I believe they are just oxide coated steel.

I'm pretty sure they are stainless steel, but I could be wrong as well.

[eastside 400]

that might be true, but the stock intake valves in the 04-05 hold up good, not like the Ti valves.

[Jake250ex]

did not know that! thanks for the info. i still want to replace them. think i should use new springs too?

[Scro]

Originally posted by Jake250ex
did not know that! thanks for the info. i still want to replace them. think i should use new springs too?

If you are not using a highly aggressive cam, there's no reason to go to stiffer springs. You can reuse your springs otherwise.

[eastside 400]

is there anything wrong with your valves, did they tighten up alot? if they didnt they i wouldnt bother, or tear the head apart and check the seat and valve surfaces for pitting. if your going to replace the valves, and the bike is an 04 i would just replace the springs too, stock is fine unless you have a web or something big in it

[Jake250ex]

I have a HC 2 in it. The motor got cooked at my last race so im gonna go ahead and replace everything.