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Thread: PSI 780 engine

  1. #1
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    PSI 780 engine

    Scored this engine for an outstanding price, even with shipping included. Listed as a 650, but is really a 780. http://cgi.ebay.com/ebaymotors/ws/eB...200944912&rd=1

    Everything on it works and is in good shape. PSI triple pipe adapters. Stator good, starter good, bendix good, crank good (little play on MAG rod) and index is right on. Cases are ported and stuffed. Cyls are ported and bored .5mm oversized with pistons in good shape. Cyls in good shape with light wear in 1 cyl. Cross hatches still visable in all. Heads are in perfect order, however they don't appear to be milled like described.

    Check out the intake area of the top case. SERIOUS grinding with epoxy build up. Looks as if the top case groove for a 780 is ported as well.
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  2. #2
    Moderator beerdart's Avatar
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    Oh crap you could throw a cat through the intake.

  3. #3
    Moderator beerdart's Avatar
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    Any word on where the pipes ended up?

  4. #4
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    More pics.
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  5. #5
    Moderator beerdart's Avatar
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    Holy suck and blow batman.

  6. #6

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    i knew i should have bought that thing ,and i still want that dam bendix holder
    LOL nice deal .

  7. #7
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Check out the porting and stuffing of the top case. I threw a 750 top case in for comparison.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  8. #8
    Bing-A-Ding-Ding-Ding, Brrrrrap! Brrrrrrrrrap!!! Polaris_Nut#1's Avatar
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    I laughed when I read the description and it said 650. There was no way with them pipe flanges on there. LOOKING GOOD

  9. #9
    SPEED KILLS, BUT YOU GET THERE QUICKER Keddano's Avatar
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    OK,That motor don't go back together till we all get a chance to personally come by and look.(Bring it to MUDBUG) Are the intakes side to side any wider then stock?I like to see the cases that the set of Pro Stock reeds that I have came out of.

    Oh yea, Nice snag, looks like you have 3 big projects now.

  10. #10
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Quote Originally Posted by beerdart View Post
    Oh crap you could throw a cat through the intake.
    Looks like a tree chipper intake. Cat, small dog, nagging G/F, whatever!!!!

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