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Thread: Extrude honing

  1. #1
    Roll Tide!! SeadooTech's Avatar
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    Extrude honing

    Has anyone ever had their exhaust manifold extrude honed? Its a process where they force clay and liquid through ur manifold to port and polish it.....


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    Gatorman79's Avatar
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    I am interested in hearing this answer myself

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    Roll Tide!! SeadooTech's Avatar
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    Its not cheap but a place in Florida does it..... I would think if u had a big charger andported head u would need to make the exhaust flow more

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    Sayers's Avatar
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    They use that process to get to hard to reach places, manifolds that you cant get to the inside. The 4 tec exhaust mani you can easily clean up by hand if you have some time to kill.

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    Roll Tide!! SeadooTech's Avatar
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    What's the best tool to use where the manifold bends at the back...... I can get a long burr for most of it but some of it will be a pita

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    Eastside Powersports Slow 91's Avatar
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    ive ported tons of those manifolds. To get really decent flow numbers, you would have to spend a decent amount of time.

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    Boost addict hotbird's Avatar
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    hey Chris are you cnc porting them or by hand?

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    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    He mostly does hand jobs...

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    Eastside Powersports Slow 91's Avatar
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    by hand, I learned from bigdaddy

  10. #10
    Boost addict hotbird's Avatar
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    How much gain can be had buy porting the exhaust?

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