Mikuni Airbox Mark 2
Posted: Tue Dec 17, 2013 8:44 am
Hi all,
So I've been running with Mikuni CV carbs on my 906 for a while with a serviceable conversion of the Paso air box. The bottom was cut out and a flexible rubber mat glued to the air box with a couple of holes cut for a tight fit around the carb mouths. While that worked, it was only ever intended to be an interim fix...... that was 2 years ago!
So finally I built up the energy to make a proper version that used the OEM rubber intakes for the Mikuni carbs as per the 400/600/750/900 SS family.
Made an aluminium plate to located the carb intake holes, and bent it to clear the carbs.
Made a fibreglass mould of the bottom of the tank, locating on the rear bolt holes and front rubber stop.
Made a cardboard box to cover the carb intakes, covered the bike and carb box with newspaper and used expanding foam injected through a hole in the top of the fibreglass tank template to cast a copy of the void space.....well the first attempt I forgot to plug the hole after injecting the foam.......!
Eventually I got a foam piece that was worth working on....
Next, sanding and using the foam plug to make up a mould and finally the fibreglass or carbon fibre airbox.......
Cheers,
Mick
So I've been running with Mikuni CV carbs on my 906 for a while with a serviceable conversion of the Paso air box. The bottom was cut out and a flexible rubber mat glued to the air box with a couple of holes cut for a tight fit around the carb mouths. While that worked, it was only ever intended to be an interim fix...... that was 2 years ago!
So finally I built up the energy to make a proper version that used the OEM rubber intakes for the Mikuni carbs as per the 400/600/750/900 SS family.
Made an aluminium plate to located the carb intake holes, and bent it to clear the carbs.
Made a fibreglass mould of the bottom of the tank, locating on the rear bolt holes and front rubber stop.
Made a cardboard box to cover the carb intakes, covered the bike and carb box with newspaper and used expanding foam injected through a hole in the top of the fibreglass tank template to cast a copy of the void space.....well the first attempt I forgot to plug the hole after injecting the foam.......!
Eventually I got a foam piece that was worth working on....
Next, sanding and using the foam plug to make up a mould and finally the fibreglass or carbon fibre airbox.......
Cheers,
Mick