Can't unkink air box pipe

Discussion in 'General Tuning' started by sr 125 01, Jan 10, 2014.

  1. sr 125 01

    sr 125 01 Member

    Messages:
    83
    Hi fitted a 25m carb on my runner 180 now the air box pipe has a kink
    Can't unkink it

    Help plz
     
  2. turbovetto

    turbovetto Well-Known Member

    Messages:
    1,561
    Rides:
    tweaked ovetto
    Oh the fun I have had putting bigger carbs on scoots. You might have to get inventive. A trip to a breaker's yard with a tape measure for some lorry hoses - and then some big screw-collars might be useful. I actually make my own connecting pipes out of fibreglass - to measure - and use short lengths of motorbike shock absorber accordion with collars to make it air tight. Fibreglass superglues very well to airbox plastic. Not a lot of people know that......
    Here are some photos which might give you ideas. The rulebook says as long as the cross-sectional area of the connection is 200% greater than the diameter of the carb - you're fine. You will notice that the stock pipe does not obey this rule.
    This is some pipework which makes a 'standard' Ovetto Airbox the same as another connection for a big Stage 6 filter. All adaptable to pwk carbs - with a nice venturi thanks to the purple moto-shock bits. The main thing is to make it air tight.
    http://i572.photobucket.com/albums/ss162/bloodyhell451/prepa/boite2.jpg
    http://i572.photobucket.com/albums/ss162/bloodyhell451/prepa/coude.jpg
    http://i572.photobucket.com/albums/ss162/bloodyhell451/prepa/cot.jpg
    http://i572.photobucket.com/albums/ss162/bloodyhell451/prepa/front.jpg
     

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