Right so any of you worldly wise people ever hear of psychic valves? Are they any good? Fully stainless one piece swirl polished nitride coated sounds like the jazz badgers so i bought a full set of 5 three in 2 ex for a mear £77 delivered.. I chose stainless over ti for cost and durability Im now in two lines of thought on how they can be this cheap and if theyre any good as they state racing product no warrenties given under any circumstances. ... Any honest feedback/ reviews? Thanks Juicy
I know of two Husabergs running them Juicy that have done 100s of hours and so far so good. Think I may of used them for the inlets on a tm but not sure, I do know its still a runner though.
Music to my ears! Thank you Will be purchasing piston and relining barrel next month n month after... minimum free cash around at the moment but still need progress.
This is good news. I just bought a set of intake & exhaust for my '09 KX450F, and it is hard to find a review from someone who has actually used them and not just assuming and bad mouthing them.
My only gripe about stainless valves is that they can be hard on valve guides but since these are coated they should work out great... I'd use them.
I would just use Yamaha valves unless I had reason to do otherwise. I have been waiting for electric valves for quite a while.
I'm with Fran OEM is always the solid choice. and knowing more than one guy with over 10K mile WR Yamahas they are fairly robust in stock configuration.
Well I've got psychic but that's shared ago and well the bikes still in bits lol. You know life just gets in the way sometimes. I went stainless as I'm no racer full throttle will only be used when the bikes fallen over on the throttle so that's no worry. The bike hadn't covered that many miles when the own Ti valve let go. I'm not blaming that on the valve but the guys lack of maintenance. If this thing ever gets going I will let you know how it goes.
I'm with you on your path-0-logic.. Actually a one piece stainless or steel valve will usually give some warning about when it's going to fail. The valve clearance will get tight and when you reset it it will get tight again quickly, like in 10 hrs or so. This is an indication that the valve head is distorting and being pulled into the seat. A Ti valve is not as likely to give warning, usually when it reaches the end of it's lifespan it pops the head off without warning and trashes the engine.
Does anyone offer stellite valves? I ran into stellite valves in the automotive industry. I had to get a special grinding wheel to grind them. The standard grinding wheel would touch it. I did multi angle valve jobs. Three angles on the valves with four angles on the seats. Kibblewhite black diamond valves? http://shop.kpmivalvetrain.com/c/dirt_yamaha How often do you refresh a 4t bike? How come the hondas last a longtime or is it the low tech hondas? Forgive me I know very little about 4t bikes.
