Ski Stock 2 Stroke

Listed below are the Ski Stock rules and rule changes for 2008. If it doesn’t say you can do it here then you cannot do it. It is your responsibility to read and understand these rules. The changes listed below are legal for EJSBA competition only. All boats must be completely stock as of the EJSBA Stock rules.

Homologation:
To receive the homologation to race in EJSBA Racing, a production of 100 units of Ski Stock class and 300 of R/A Stock class must be produced in and sold to the final user.
The engines must still meet the weight / power ratio and the maximum cubic capacity.

Ski Stock 2 Stokes:
All boats must be completely OEM (stock), with the exception of the following modifications:

• Jets (Carbs) and any OEM adjustable setting on the carbs
• Handlebars
• Handle pole
• Padding
• Trigger throttle
• Intake Grate
• Impeller
• Pump cover plate
• Bumpers
• One set of sponsons (must receive the agreement of the Tec Director)
• Aftermarket bilge system
• Start engine and bendix
• You can use a “primer kit”
• You can remove the butterfly from the “Choke”
• You can bore your cylinders but only use OEM oversize pistons replacements.
• Crankshaft may be rebuilt using OEM parts only
• Any valves used within the entire cooling system must be OEM
• Quick-turn steering modifications to alter the steering ratio are allowed
• Aftermarket steering cables will be allowed
• Aftermarket water hoses and fuel line can be use as long as the inside diameter has the same dimension as the OEM counterparts.
• Factory Pipe SXR air temp bypass NOT allowed
• Aftermarket ECU allowed

Yamaha Superjet
In the Ski 2 Stokes class, you will be allowed to put the cylinder, piston assembly, cylinder head and gaskets from the 760 engine, but not the other parts from the RR Kit.