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420B4-J motor with ignition

420B4-J motor with ignition


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Deliverytime: Demand

Product Description


2013 NEW!!!! Significantly improved former version of ZDZ 420B4 engine with new cylinders for higher performance and much better cooling and new improved design of crankcase.
Whole system including ignition was integrated into a "unit" which is now easy to install and user can be sure, that installation of ignitions is done properly. No need to think about how and where to install ignitions. No need to be afraid of temperature of the neither vibrations.
Two stroke four cylinder flat model gas engine 420ccm. Suitable for giant scale airplane models with weight over 40kg and wingspan over 4 meters.
Technical parameters of ZDZ 420B4-J engine 
Displacement 420 ccm
Weight 11000g
Bore 52mm
Stroke 50mm
RPM range 1000-8500ot/min
Ignition processor controlled, dampened casing
Spark plugs NGK CM 6 
Spark plug electrodes gap 0,5-0,7mm
Intake system Reed valves
Recommended oil Full synthetic oil for two stroke air cooled engines
Recommended fuel Automotive gas BA 95 or higher
Fuel mixture oil:gas 1:35(break-in) 1:40 (normal run)
Carburettor Walbro WB-27
Normal/Max CHT 160/200 degrees of Celsius
Fuel consumption 9,8l/hr @ 75% power
Propeller configuration Tractor or Pusher
Static thrust (twinbaldes)
Fiala prop 40x20 72kg @ 4600RPM
Fiala prop 40x18 74kg @ 4700RPM
Fiala prop 40x16 76kg @ 5000RPM
Optional eqiupment 
Electric starter 12V/370W
Electric generator 500W/28V +/-200mV
Belt reduction gear Ratio on demand. (Standard ratio 1:2,7)

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Additional Information

Additional Information

Brand ZDZ motors
cilinder +120cc
deliverytime Demand