Reply to "Stroker Motor Questions by Dave F #5972"

> Dan, how do the mechanical injectors work?

I assume you are referring to the constant flow mechanical injection systems
like the Hilborn and Kinsler set-ups used in drag racing and sprint cars.
They use a mechanical fuel pump to constantly supply fuel to the injectors
(nozzles) in direct proportion to the engine RPM. The fuel becomes
pressurized due to the restrictions provided by the fixed orifices of the
main bypass jet and the nozzles. A barrel valve is used for idle and the
part throttle. Not really recommended for street operation but there are
various ways to add bypasses and enrichment circuits. There are also timed
schemes like the Lucas mechanical timed injection used in Can Am.

> Would they be easier to install?

They are mechanically more complex to install but don't require an ECU but
have considerably more plumbing.

Dan Jones