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Difference between B and D series header flanges.

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Old 03-07-2004, 03:33 PM
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Default Difference between B and D series header flanges.

I am manufacturing header flanges for the Honda B series and the D series engines. How can I identify the flanges, they are very similar.

One flange is about 1/2" longer than the other one.

Could someone help me in identifying them.

Thank You for your help, Trent.
Old 03-07-2004, 04:42 PM
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Default Re: Difference between B and D series header flanges. (TrentWar)

HELP!!!!!
Old 03-07-2004, 04:44 PM
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Default Re: Difference between B and D series header flanges. (TrentWar)

the B has big *** ports and the D's are tiny compaired to it
Old 03-07-2004, 05:12 PM
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Default Re: Difference between B and D series header flanges. (Sideout)

Thanks Sideout,
The header flanges that I currently have, have identical size ports. One header flange is longer than the other. I need to know which is the D and which is the B. Longer or Shorter?
Old 03-07-2004, 09:27 PM
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Default Re: Difference between B and D series header flanges. (TrentWar)

longer i believe is the bseries....i will check tomorrow when i get to the shop i have both....
Old 03-08-2004, 05:13 AM
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Default Re: Difference between B and D series header flanges. (TrentWar)

UH, you are manufacturing these and don't know which is which? I find that somewhat bothersome. You don't have machinest drawings that refers to which is which application?
Old 03-08-2004, 07:01 AM
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Default Re: Difference between B and D series header flanges. (TrentWar)

just checked d vs b.....b is about 3/8in longer....

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