Rotory Valve

[handler]

I need a new rotory valve. What one do I get? I also don't know $(*^ about them, besides the obvious. Any insite would be appriciated.

[ September 09, 2003, 06:02 PM: Message edited by: handler ]

[Technical Support]

What ski?

[handler]

oops! I guess that woud help. - 97 XP

[Technical Support]

The opening duration and location relative to TDC controls the intake charge and powerband. The stock valve is best, the 159 deg. valve. Aftermarket valves in slightly different durations are available to slightly shift the powerband up or down, but they do not make any more actual HP, and can damage your engine when they fail as they are not hardened steel, but carbon fiber.

Click on the picture of the engine on our Main page for an animation.

[handler]

So, when I get one, how do I determin the setting or placment of the disk? I bought this ski used and it had a carbonfibor one on it. But OE would be best?

[Technical Support]

Read the article in the Tech section.

[handler]

Much appreciated

[BLOWBYU]

Stick with the stock one.