30mm header?

Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ /

http://www.treatland.tv/derbi-variant-metrakit-GIANT-MUFFLER-RACING-p/derbi-metrakit-giant-muffler.htm

i'm building a 80cc big port metra

and i was thinking about this pipe

untill a friend advised me that a 30mm header

may not allow enough backpressure

for the chamber to be effective.

i was going to run a mik 24 (since i have one)

but i could run a del 21.

i was planning on getting that pipe

making an intake, and matching the exhaust port to the pipe

and the intake to the carb

and then just cleaning it up and tuning it.

its going on a a55 bottom end.

should i be concerned about the back pressure?

am i going to eff up the port timing by matching it to the header?

cause otherwise i'll just get a simo, i suppose.

thanks "cool dudes"

Subject Written By Posted
  30mm header?Topic by: Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ 02/23/10 09:55AM
  Re: 30mm header?Re: zeke zeke 02/23/10 10:05AM
  Re: 30mm header?Re: Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ 02/23/10 10:16AM
  Re: 30mm header?Re: Cold Trailer GARzan Justin Cold Trailer GARzan Justin 02/23/10 10:27AM
  Re: 30mm header?Re: Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ 02/23/10 10:37AM
  Re: 30mm header?Re: Mo Peds Mo Peds 02/23/10 10:40AM
  Re: 30mm header?Re: Cold Trailer GARzan Justin Cold Trailer GARzan Justin 02/23/10 11:04AM
  Re: 30mm header?Re: Mo Peds Mo Peds 02/23/10 11:13AM
  Re: 30mm header?Re: Mo Peds Mo Peds 02/23/10 11:16AM
  Re: 30mm header?Re: Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ 02/23/10 11:37AM
  Re: 30mm header?Re: Cold Trailer GARzan Justin Cold Trailer GARzan Justin 02/23/10 11:50AM
  Re: 30mm header?Re: Mo Peds Mo Peds 02/23/10 12:21PM
  Re: 30mm header?Re: Mo Peds Mo Peds 02/23/10 12:26PM
  Re: 30mm header?Re: spencer spencer 02/23/10 11:54AM
  Re: 30mm header?Re: Mo Peds Mo Peds 02/23/10 12:21PM
  Re: 30mm header?Re: spencer spencer 02/23/10 12:35PM
  Re: 30mm header?Re: Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ 02/23/10 12:41PM
  Re: 30mm header?Re: Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ 02/23/10 12:45PM
  Re: 30mm header?Re: rofman rofman 02/23/10 12:55PM
  Re: 30mm header?Re: Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ 02/23/10 01:07PM
  Re: 30mm header?Re: Cold Trailer GARzan Justin Cold Trailer GARzan Justin 02/23/10 01:48PM
  Re: 30mm header?Re: Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ 02/23/10 02:29PM
  Re: 30mm header?Re: Cold Trailer GARzan Justin Cold Trailer GARzan Justin 02/23/10 03:01PM
  Re: 30mm header?Re: Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ 02/23/10 03:09PM
  Re: 30mm header?Re: Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ 03/21/10 02:40PM
  Re: 30mm header?Re: The real rafter The real rafter 03/21/10 06:26PM
  Re: 30mm header?Re: Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ 03/21/10 07:04PM
  Re: 30mm header?Re: Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ 03/21/10 10:17PM
  Re: 30mm header?Re: Daes Daes 03/24/10 02:41AM
  Re: 30mm header?Re: Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ 03/24/10 12:54PM
  Re: 30mm header?Re: xamboozi xamboozi 03/25/10 01:01PM
  Re: 30mm header?Re: Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ 03/25/10 03:23PM
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