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| June 27, 2012 News |
| WKA Confirms TaG Engine Technical Inspection Procedure |
| Article by: WKA PitBoard |
WKA has received several inquiries about the use of the light check in determining legality of cylinders, particularly those in the oval port TaG engines.
The light check inspection procedure is used in addition to the LAD gauge to ensure that the exhaust timing is within the limits specified in the 2012 Technical Manual. It is used with all Piston Port, Controlled Stock and TaG engines as well as the Comer K80. See the Technical Manual for the light check specifications for each of these engines. The procedure itself is described in detail on Page 118, Section 506.2.
WKA has developed the port timing specifications based on inspection and measurement of each engine when it is first submitted for approval. The specs are not based on manufacturers' published specs, as WKA has found that these specifications do not always match the engines submitted for approval.
Engine builders should be aware that both the LAD tool and the light check are being used in post-race technical inspection. They should pay particular attention to any cylinder with a Nicasil plated bore that has been re plated, as the process of stripping the old Nicasil finish out of the cylinder can affect the controlling edge of the port.
As a final note, engine builders need to be aware that WKA measures port timing in fractions of an inch below top-dead-center, not degrees of crankshaft rotation as measured by a degree wheel or encoder.
Chapel Hill Grand Nationals tire rules
The WKA office has received some calls lately regarding the tire rules for the August 10-12 Chapel Hill Grand Nationals at Chapel Hill Raceway in southwest New York.
As stated on the WorldKarting.com Vega Speedway Pavement Class Rules page, tires to be utilized for the Grand Nationals will be those that are utilized at the respective WKA-recognized divisional track; i.e.; you may run under your divisional track's tire rules at the Grand Nationals.
Recognized 2012 Speedway Pavement divisional tracks are Chapel Hill, King George (Va.) Speedway, Sandy Hook (Md.) Speedway, Riverhead (N.Y.) Raceway, Oakland Valley (N.Y.) Race Park and Poughkeepsie (N.Y.) Raceway.
Pre-registration prices are $70 per class and $35 for Friday practice through this weekend. Second tier prices, which run from July 2 to July 27, are $80 per class and $40 for Friday practice.
Competitors may also reserve a number for the event for just $10 per class. Click here to view and print the Chapel Hill Grand Nationals reserved number form.
Mail completed pre-entries to WKA at 6051 Victory Lane; Concord, N.C. 28027; fax to 704-455-1609 or scan to Keith Shampine at keith@worldkarting.com
Call the WKA office with questions at 704-455-1606. |
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