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Thread: gas valve

  1. #1
    cmherrera's Avatar
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    gas valve

    Is thier a differance in bellows? Also can a 1200 valve be cut for a 1300cc? I pulled my gas valves off my Riva S/S motor and I want to put it on my 1300 cylinders.


  2. #2
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    i read on here somewhere that the bellow does not matter, its the spring stiffness that defines how the valves operates.

    as for if they will fit a 1300 top end, yes they will but they need to be ground to clear.

  3. #3
    IrishGpr05's Avatar
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    The different color bellows does not matter. Like izz0 said it's the spring that makes the difference. They are a few different ones. For a 1200 and 1300 motor using the red spring will work good.

    Yes the valves from the 1200 will work buy have to be machined to fit the 1300 cylinders. Send them to Lowell. They will come out great.

    -Jon

  4. #4
    cmherrera's Avatar
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    Quote Originally Posted by IrishGpr05 View Post
    The different color bellows does not matter. Like izz0 said it's the spring that makes the difference. They are a few different ones. For a 1200 and 1300 motor using the red spring will work good.

    Yes the valves from the 1200 will work buy have to be machined to fit the 1300 cylinders. Send them to Lowell. They will come out great.

    -Jon
    I will be sending it to Lowell along with my cylinders for porting. Thanks

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