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Buell Forum » THUMPer Forum » Blasting Away - The Thumper Quick board » Archive through June 15, 2010 » What size is the blast header pipe? « Previous Next »

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The4ork
Posted on Sunday, October 11, 2009 - 11:40 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

im gonna make a custom exhaust... looks like 2" would do it?
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Ezblast
Posted on Monday, October 12, 2009 - 12:56 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

1 5/8 od, some after market start at 1 3/4 and stay that way through out, some start at 1 3/4 and them step to 1 7/8 and others step to 2", the Force and Terry's custom are stepped very closely except his pipe has an extra smaller beginning start at 1 5/8 for an 1 1/2" - it is the faster at low end and mid range acceleration, no Blast aftermarket has started at 2" - you would loose all bottom and mid range acceleration, almost dead in the water till around 4500 to 5000 rpms. You could do the washer trick to save some, but still not worth it. In several different parts of this exhaust section you will find the Dimensions for both the Force and Terry's custom, as well as the dimensions for the Jardine, WB, Kerker, V&H, Pro-Series, and other customs as well as mixed Breeds with interesting results. The Jardine header with the D&D can is awesome!
EZ
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The4ork
Posted on Monday, October 12, 2009 - 01:25 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

just trying to save a few bucks for other mods... i can make my own exhaust for cheap.

looks like ill go with 1 3/4 found a bunch of bends in that size...

gonna do the xb head me thinks

ez, do you have like msn messenger or yahoo? so i can ask you some questions and not have to wait for the quickboard reply? im the4ork@yahoo, and the_4ork@hotmail
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Ezblast
Posted on Monday, October 12, 2009 - 01:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

ezedzi @ gmail . com
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The4ork
Posted on Sunday, October 25, 2009 - 07:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

im gonna try removing the muffler, cutting a the top skin off the muffler, gut it all out, and possibly install a small resonator inside, or leave it empty and weld in some baffling...

gonna redo the header-to-muffler pipe in a larger size.

whatcha think? i just love thelook of the look of the stock exhaust
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The4ork
Posted on Tuesday, October 27, 2009 - 04:22 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

?
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Swampy
Posted on Tuesday, October 27, 2009 - 08:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

When you get the think apart you find the primary running to the rear of the muffler.

That is where I would start, at the rear with a big "U" and a small can exhausting forwards.
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