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650/750 engine gasket differences

Discussion in 'XJ Technical Chat' started by redlightningsvx, Jan 18, 2013.

  1. redlightningsvx

    redlightningsvx New Member

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    Was looking on ebay for a engine gasket set and seen one for a 650 for $110 and a 750 for about $65. Are they both interchangable to one another or no?
     
    redlightningsvx, Jan 18, 2013
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  2. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    Depends on whether it's a YICS 650 or an earlier 650. The one for a YICS 650 would be quite similar to a 750, but probably not completely interchangeable. One for an early, pre-YICS 650 would NOT be at all.
     
    bigfitz52, Jan 18, 2013
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  3. redlightningsvx

    redlightningsvx New Member

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    Its a 82' YICS motor
     
    redlightningsvx, Jan 18, 2013
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  4. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    My point was that there are two "flavors" of 650, YICS and non-YICS.

    There was only one style 750 mill and it was a YICS motor.

    YICS 650 and 750 will be nearly the same, the pre-YICS 650 not.
     
    bigfitz52, Jan 19, 2013
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  5. MiGhost

    MiGhost Well-Known Member

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    As far as the 650/750 YICS engines go. The only difference in the gaskets is the cylinder base o-ring. This will be due to the larger diameter cylinder sleeves in the 750.

    650: O-Ring 93210-69434-00
    750: O-Ring 93210-71462-00

    All other gaskets/seals should be the same. Both the 650, and 750 YICS share a common case, and head casting.

    Ghost
     
    MiGhost, Jan 19, 2013
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  6. redlightningsvx

    redlightningsvx New Member

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    Awsome thanks guys for the info
     
    redlightningsvx, Jan 19, 2013
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