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81 xj750rh seca cylinder interchange

Discussion in 'XJ Technical Chat' started by adamcastro, Aug 18, 2016.

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  1. adamcastro

    adamcastro New Member

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    looking for someone who knows if 81-83 maxim and seca cylinders interchange i have looked and they are different part numbers 562-11101-00-00 for 1981 and 562-11101-10-00 for 82 up whats the difference? can i use a later jug? mine has low compression 100psi 75psi 30psi 30psi
     
    adamcastro, Aug 18, 2016
    #1
  2. k-moe

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

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    They interchange. The different part number is due to the paint differences.
    Before you buy anything, have you done a leakdown test?
    Did the bike sit for long?
     
    k-moe, Aug 18, 2016
    #2
  3. adamcastro

    adamcastro New Member

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    i accidentally put the head part number. no, all i did was check for fuel, and spark. it wouldn't run so i did the compression check. the guy i got it from was riding it last month but he was push starting it. the starter wasnt working. i bought a new starter and cant get it to run
     
    adamcastro, Aug 18, 2016
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  4. k-moe

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

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    Did you actually see it push-start before buying?
     
    k-moe, Aug 18, 2016
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  5. adamcastro

    adamcastro New Member

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    no
     
    adamcastro, Aug 18, 2016
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  6. k-moe

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

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    So the truth is that it wasn't being ridden at all.

    Do a wet comression test (1 tbsp oil down each spark plug hole), then do a leakdown test.
    If you're lucky the rings are just stuck (unlikely with how low the compression is).

    Check the valve clearances too.

    You may be buying new cylinders, but that should wait until you know whether it's better to tear the engine down, or just look for another.
     
    k-moe, Aug 18, 2016
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  7. adamcastro

    adamcastro New Member

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    thanks i oiled to cylinders now i have 150 125 125 125 so i ordered cylinders rings and pistons. can i take off the jugs with the motor in the bike?
     
    adamcastro, Aug 19, 2016
    #7
  8. desmotom

    desmotom Active Member

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    yup you can
     
    desmotom, Aug 19, 2016
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  9. adamcastro

    adamcastro New Member

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    yes!!! made my day
    !!
     
    adamcastro, Aug 19, 2016
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  10. k-moe

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

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    Be sure to get wrist pin circlips too. They should not be reused.
     
    k-moe, Aug 19, 2016
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  11. adamcastro

    adamcastro New Member

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    ok thanks
     
    adamcastro, Aug 20, 2016
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  12. adamcastro

    adamcastro New Member

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    where does this vacuum hose go? its on the petcock, does it go to the intake boot?
     
    adamcastro, Aug 22, 2016
    #12
  13. rocs82650

    rocs82650 Well-Known Member

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    Yes, one of them...usually #3.

    Gary H.
     
    rocs82650, Aug 22, 2016
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  14. adamcastro

    adamcastro New Member

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    man, its good this forum exists!!
     
    adamcastro, Aug 24, 2016
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