350cc Pro Moto-cross Engine Kit:

The following listed set-up is a guideline of what Patriot Racing would recommend using for a Banshee MX set-up.

Pipes:

  Patriot Racing recommends Paul Turner mid range pipes for our MX motors.  The Paul Turner pipes with our set-up has excellent low end power- a very strong midrange, but a smooth hit onto the pipe- providing for greater control and power tractability.  

 Carbs:  

  28mm Keihin PWKs.  Easy and precise to tune, these carbs are ideal.  By keeping the carb diameter smaller, the intake velocity and fuel atomization is much greater.

Reed cages:

  We've found that V-Force reed cages with the Pro Design V-Force compatible intakes with the built in boost bottle works superbly for our MX set-up.  The W style V-Force reed cage has smaller inlet passages which in turn creates for greater intake velocity.  This intake velocity is crucial to good throttle response and sub peak power.

Cylinder head:

  Aftermarket billet head with compression ratio to suit octane level.  A wide squish band to provide for good low end torque.  The stock cylinder head can be modified as well- the head is decked and the squish band is re-cut.

Ignition timing:

  At a minimum the stock stator mounting plate must be modified to provide for at least 4 degrees of timing advance.  The ability of the motor after cylinder porting alterations and the pipes fitted allow for a greater peak RPM- this higher peak does not suit the stock timing curve.  We recommend 4 degrees advance for pump gas motors and 6 degrees for race fuel motors.

Cylinder porting alterations:

  A MX engine is probably the most difficult to do correctly and net the desired results.  A MX engine needs smooth tractable power, it also often requires good straight-line speed.  Port velocity is essential in a good MX set-up.  A fine balance must be struck between porting alterations that provide good power- but meanwhile retain good velocity for throttle response and crisp power.  We spend a tremendous amount of time in correcting the transfer port angles and flow which then nets a consider boost of mid range power.  The intake is reshaped- but not enlarged- to retain good velocity and fuel atomization.  The exhaust port duration is crucial in ensuring the motor is able to pull sufficient RPM, but not too high that it creates a shorter power stroke and sub peak power falls off. 

Package Pricing

Package Priced at: $1795.00

Note package price does not include incidental parts found faulty during tear-down and inspection.

We can build any engine combination, the package pricing is to reflect the complete package available.  Provide us with your budget and we can develop a MX package to meet your budget and satisfy your power needs!!!

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