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  1. #1

    Difference between a HO and SHO cylinder head

    What is the difference between a HO and a SHO cylinder head on the Yamaha 1.8L engines? Can the HO head be used on a SHO motor?

    I know the part numbers are different.

    Thanks
    Last edited by stx-di; 12-12-2019 at 03:30 PM.

  2. #2
    I think its just the cams that r different

  3. #3
    Hurricane1000's Avatar
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    I put a used HO head on my Gp1800...

    No problems at all.


  4. #4

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    One difference is the sho intercooler bracket, there are no bolt holes on the HO head to be mounted

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