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  1. #1
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    How can I identify which Fuji heads I have?

    I just received a set of 3 cylinder heads that said they were for a 750. I have some 750 jugs here and they would not slide easily over the studs. How can I verify that these are indeed 750 heads?

    Bryan


  2. #2
    thester71's Avatar
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    Quote Originally Posted by BryanP View Post
    I just received a set of 3 cylinder heads that said they were for a 750. I have some 750 jugs here and they would not slide easily over the studs. How can I verify that these are indeed 750 heads?

    Bryan
    Do they fit all the way down?

  3. #3
    I had some 750 and 780 jugs and heads. I'm pretty sure they all had a 75 or 78 stamped on them. I know the jugs did....but I'm thinking the heads did too.

  4. #4
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    I can get them all the way down. I just want to know I have the right ones. 2 of them have a 2 stamped on the head and one has a 3 on top of the head. Does this mean anything. The jugs have stampings on them, as far as I can tell the heads no not

  5. #5
    Canadian Beaver Inspector jkindt's Avatar
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    Measure the bore and compare it to your jugs. The 2 and the 3 were an attempt at identifying which head is on which cylinder, but they are all the same and interchangable. My heads all have 2 on them.

  6. #6
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    The bore appears the same. I measured the heads at just over 70mm

  7. #7
    thester71's Avatar
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    I believe the 780 heads and cylinders have a larger spacing on the bolt pattern to accomodate the larger bore, therefor a 780 head wouldn't fit a 750 cylinder

  8. #8
    Canadian Beaver Inspector jkindt's Avatar
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    Quote Originally Posted by thester71 View Post
    I believe the 780 heads and cylinders have a larger spacing on the bolt pattern to accomodate the larger bore, therefor a 780 head wouldn't fit a 750 cylinder
    thester71 is corect. The 780 jugs/heads have a slightly larger bolt spacing than the 650/750s. The 750 jugs/heads can, however, still be bored out to a larger piston. If you can get the heads to fit over the studs and seat all the way on the jugs you most likely have the right ones. The 780 heads would have to be modified slightly to fit. Make sure the studs are cleaned up good and not bent. Also remember this when getting head gaskets....the 750 gaskets are not the same as the 780 gaskets.

  9. #9
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    What do the numbers 2 or 3 stamped on the heads mean?

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