Aircooled Morini upgrades?

Discussion in 'Morini Bicycle Engine' started by forties, Jun 23, 2017.

  1. forties

    forties New Member

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    I know there are a few different hp versions of these motors. So what exactly are the differences between the different spec output Morini aircooled motors? Is it a simple swap a few parts to go from the low output version to the high output version? Or is it like piston/rod/etc differences where its more involved..
     
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  2. Easy Rider

    Easy Rider Santa Cruz Scooter Works

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    Cylinder. Different transfer ports
     
  3. forties

    forties New Member

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    Ah got it thanks. If I ever need a replacment I'll look at getting the good one.
     
  4. forties

    forties New Member

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    I checked and what I've got is an S5-GS. Hopefully the cylinder and everything is in good shape. From what I've read it should have a decent enough amount of power without any changes. Thinking about mounting it rearward on a tandem frame so that pedal clearance and pipe clearance won't be any issue.
     
  5. desdemona

    desdemona New Member

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    I also don't know different hp versions of these motors
     
  6. forties

    forties New Member

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    Desdemonda basically for quick visual ID... the really fast one has the intake manifold pointed downward into the case. The more mild ones have the intake pointed sideways into the cylinder. Check google images for "morini S5" and "morini s6" to see the difference.
     

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