Barn Fresh Rat gone woody

Discussion in 'Motorized Rat Rods' started by snorks, Apr 13, 2020.

  1. snorks

    snorks Member

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    Now that it's ripe I think I will restart this dirty rat. DT 50 pipe.
     

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  2. snorks

    snorks Member

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    I realised i had a nice 18mm Delorto from an old 1950s Garelli. Turned up an inlet manifold ...wow...the power difference from the old stock unit is crazy. Beautifully made carb. Jetting seems perfect. Wish I had faced off another 6mm to give me more space to fabricate an air filter. Needs some brakes also.
     

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  3. wheelbender6

    wheelbender6 Well-Known Member

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    That exhaust looks so classic - like the days of Roger Decoster.
     
  4. snorks

    snorks Member

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    Thanks. The front of the pipe was rotten when I got it so I cut it back to where the steel was solid, fabricated a new extension of the diffuser. The original pipe was a larger diameter at the cylinder though. Long story short I think I need to add about 2 inches to the header. This motor is about 12 years old. But fairly low total hours. Inlet port is actually quite big. Its a pity the stud spacing is so close together on both manifolds.
    So next steps Air filter, brakes, lengthen header.
     

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