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Tkiisel
Posted on Wednesday, February 07, 2018 - 08:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'm thinking of port matching the intake on an S&S manifold with a SuperE carb. How careful do I need to be on with the texture inside the manifold?

I'm updating with an NRHS 1250 kit on a 2000 X1.
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Phelan
Posted on Thursday, February 08, 2018 - 02:12 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

A slightly rough texture is good, but irregular waves generally are not. Smooth enough that you can easily glide your finger across it without snags, slightly rough enough that your hand doesn't drag across it when slightly damp.
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Tkiisel
Posted on Thursday, February 08, 2018 - 07:04 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks Phelan, so when I'm grinding down the lip from the original machining, I should be careful not to dig into the inside of the manifold too much so as not to mess up the pebbled texture that came from the factory, right?
Intake Manifold
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Ratbuell
Posted on Thursday, February 08, 2018 - 09:44 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I was always told (rightly or not) that sandpaper texture is a good guideline...not too smooth, but not "catch a nail" rough either.
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Buelliedan
Posted on Thursday, February 08, 2018 - 11:00 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

yes, about 80 grit sandpaper is the texture you are looking for with a home porting job.
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Tkiisel
Posted on Thursday, February 08, 2018 - 06:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks everyone, that's exactly the insight I was looking for.
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Firemanjim
Posted on Monday, February 12, 2018 - 12:16 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Unless you are drag racing it, why would you use an S&S carb????>
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Phelan
Posted on Monday, February 12, 2018 - 01:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If he has an X1 with a carburetor, it sounds like he already has the Super E and/or it was installed by a PO that did a carb conversion.
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Tkiisel
Posted on Monday, February 12, 2018 - 03:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'm taking it out on the salt to race at the Bonneville Salt Flats. I'm putting a big bore kit with new cams this year on her and port matching the manifold is part of that process.

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