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Header pipes would swap or not?

Discussion in 'XJ Technical Chat' started by quebecois59, Mar 5, 2017.

  1. quebecois59

    quebecois59 Well-Known Member

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    Hogfiddles wrote a nice an useful thread about fuel tank interchangeability.

    Now I have a question about header pipes interchangeability between the XJ900RL and the XJ750RL, would it be a direct swap or not? What about the collector box?
     
    quebecois59, Mar 5, 2017
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  2. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    The collector boxes will interchange. They mount at the same point. The front pipes probably won't due to the 750 exhaust ports are not as high as the 900. So, the pipes are a bit shorter.
     
    hogfiddles, Mar 5, 2017
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  3. quebecois59

    quebecois59 Well-Known Member

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    Because the stroke is shorter ?
     
    quebecois59, Mar 5, 2017
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  4. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Yep. 60.5 mm for the 900, 56.4 mm for the 750.
     
    k-moe, Mar 5, 2017
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  5. quebecois59

    quebecois59 Well-Known Member

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    all right, thank you guys
     
    quebecois59, Mar 5, 2017
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  6. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    The cylinders aren't as tall… So the head is not as high… So The exhaust ports are not as high
     
    hogfiddles, Mar 5, 2017
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  7. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Suddenly I have a Dylan song stuck in my head.
     
    k-moe, Mar 5, 2017
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  8. quebecois59

    quebecois59 Well-Known Member

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    Which one?
     
    quebecois59, Mar 6, 2017
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  9. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    The password is: high.

     
    k-moe, Mar 6, 2017
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    TheCrazyGnat and Stumplifter like this.

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