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  1. #1
    wedoseadoo's Avatar
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    exhaust manifold porting

    I was wondering if anyone here ports their exhaust manifolds o the fugi engines for more performance,I did a search but didn't turn up anything.


  2. #2
    wedoseadoo's Avatar
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    Ok this came straight from the guys at Polaris when I worked for the dealer.The center cylinder is basically just along for the ride ,thus the leaner jettin on that cylinder.You can cut most of the divider out of the center of the ex manifold and basically reshapeit like an airplane wing.That makes it where the center cylinder can actually flow,It makes a huge difference in horsepower and the best thing is its basically free horsepower.You will have to readjust the carbs to compensate but no rejetting is required.The center carb screws pretty much mirror the front carb settings.

  3. #3
    Moderator beerdart's Avatar
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    Or bolt on some triples!!

  4. #4
    ph2ocraft's Avatar
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    Did somebody say triples?? I like triples.

  5. #5
    You two !!Always stuffing your triples in our faces!

  6. #6
    wedoseadoo's Avatar
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    But really how many people on here actually have tripple pipes?

  7. #7
    ph2ocraft's Avatar
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    With this group it's a pretty good percentage, with the amount of PRO785's and tripled Domestics I'm willing to bet 15-20%.
    I've seen the porting done on the Fuji exhaust before, I just don't remember when nor did I catch what type of gains are to be had.
    Any ideas??

  8. #8
    800AMSOIL4U's Avatar
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    Quote Originally Posted by wedoseadoo View Post
    But really how many people on here actually have tripple pipes?
    PH2ocraft has 4. Yes I hate it also.

  9. #9
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    I find this interesting, considering some board members are running 80+mph on a single pipe. Under 8k RPM.

  10. #10
    800AMSOIL4U's Avatar
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    Quote Originally Posted by wetherby View Post
    I find this interesting, considering some board members are running 80+mph on a single pipe. Under 8k RPM.
    Well those board members are on the Yami's not the Polaris. Correct me if I am wrong, who has a Polaris single pipe that is doing 80+. I am not talking about the new Polaris 1450 engine either. If so I want to know what they are doing.

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