WKA: Pit Board 2009-03-23

WKA's Pit Board - 03.23.2009

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Change To Briggs Animal Valve Rule For All Series

03.23.2009 -- In a majority vote, the WKA trustees have decided to amend the Briggs Animal Valve rules. This will go into effect for all series starting March 25 2009. This change has been implemented to allow all racers to be able to compete across the U.S.A. with one set of rules. The amended rules will allow anyone with an engine built to 2008/2009 rules to be legal. Please see rules listed below:

2007 Valve Rule:
704.17 VALVES: Stock valves ONLY. Must be one angle. Valves may not be polished or lightened. If working area (that portion of the valve stem translating with the valve guide area) of valve stem is cleaned, no material may be removed, such as linear grooves, cross-hatching, etc. Minimum intake and exhaust valve length 3.250".

2009 Valve Rule:
704.17 VALVES: Stock valves ONLY. Must be one angle. Valves may not be polished or lightened. If the valve is cleaned, no material may be removed from the valve, No alterations to suface finish or shape allowed. Tip of valve must be at 90 degrees to stem. Keeper groove location must remain stock. Minimum intake and exhaust valve length 3.372" + or - 0.010".

New Valve Rule:
704.17 VALVES: Stock valves ONLY. Must be one angle. Valves may not be polished or lightened. If the valve is cleaned, no material may be removed from the valve, No alterations to suface finish or shape allowed. Tip of valve must be at 90 degrees to stem. Keeper groove location must remain stock. Minimum intake and exhaust valve length 3.250

704.10.1 Camshaft:
The maximum lift will be 0.255.

-credit: wka