Honda CBX1000 Carbon Fibre (fiber) Fuel Injection project

Honda CBX1000 – Fuel Injection Project

(with one piece carbon fibre (fiber) injector bodies)

Step 1: Design on CAD the desired trumpet shape with appropriate taper and length

Step 2: in the absence of a CNC machine I printed the CAD drawing 1:1 scale and marked of the dimension at 10mm intervals and marked them on the 76mm dia Alloy round bar stock ready for machining.

 

Taimoshan-CBX1000-fuel-injection-mandrel-01

 

Step 3: due to the small size and age on my lathe the process of machining and then subsequent hand finishing and polishing took some 8hrs of machine time.

 

Taimoshan-CBX1000-fuel-injection-mandrel-02

 

 

Step 4: Cut and lay up the carbon fibre sock material over the mandrel. ( sorry can’t show you all the ticks to the process )

 

Taimoshan-CBX1000-fuel-injection-build-01

Step 5: Wet lay the resin into the carbon and let cure.

Taimoshan-CBX1000-fuel-injection-build-02

 

Step 6: Part the Carbon piece from the mandrel and trim the sharp edges ( sorry more secret steps used to part carbon from mandrel with 250mm length and only 0.5deg of taper ) then repeat the process 5 more times!

Taimoshan-CBX1000-carbon-fibre-fuel-injection-throttle-bodies-01

Step 7: Sourcing of parts:

  • Butterfly shafts x2
  • Shaft bearing x 12
  • Shaft seals x 12
  • 38mm Butterflies x 6
  • Bosch Injectors x 6
  • Injector Bosses x 6
  • Injector caps & wiring tails x 6
  • Balance tube nipples x 6
  • MAP sensor
  • TPS
  • Air intake sensor
  • Engine temp sensor
  • Fuel injection EMS
  • Wide Band O2 sensor and controller
  • Ignition trigger unit
  • Fuel regulator
  • Fuel rail
  • UJ to join the 2 banks of 3 injector bodies
  • Cable Pull & throttle stop
  • various plumbing parts
  • Inlet rubbers
  • Inlet clamps
  • fuel hose
  • high pressure fuel pump

When fitted to the 1425cc CBX engine in my red CBX cafe racer this set up will have significant BHP potential without the rideability sacrifices

Taimoshan-CBX1000-carbon-fibre-fuel-injections-01

Stay tuned for more pics and updates as the parts arrive and the build progresses.