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Location:
Perth
Registered:
April 2005
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HEADERS, What order are primary's
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Wed, 15 June 2005 09:00
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Hi,
What order are the primary's susposed to be. Bill Sherwoods page says that a 4 cylinders should be #1 and #4, #2 and #3. thats 1&4 and 2&3. Every picture i look at has them 1&3 and 2&4.
Which way should it be?
Obviously not 1&2 and 3&4.
Ty
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I supported Toymods
Location:
melbourne
Registered:
June 2002
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Re: HEADERS, What order are primary's
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Wed, 15 June 2005 11:23
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4-2-1 or 4-1?
4-1 the primaries should join in order of firing order
4-2-1 pipes 1 and 4 should join, pipes 2 and 3 should join, then the two secondaries join further down the road.
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Location:
Perth
Registered:
April 2005
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Re: HEADERS, What order are primary's
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Wed, 15 June 2005 12:22
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thank for that, i agree with you. the headers on the toda site are good examples.
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Location:
South Australia
Registered:
July 2002
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Re: HEADERS, What order are primary's
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Fri, 17 June 2005 15:03
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Depends on firing order ?
Generally you'll find on most 4A and 3S headers it'll be #1 and #4 are joined, and #2 and #3 are joined - then they both join further down.
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Location:
Brisbane / Gold Coast
Registered:
May 2002
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Location:
Somewhere on a dirt bowl ...
Registered:
August 2004
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Re: HEADERS, What order are primary's
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Sun, 19 June 2005 14:21
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Unless its a ford pinto which has the firing order of 1-2-4-3
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Location:
South Australia
Registered:
July 2002
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Re: HEADERS, What order are primary's
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Mon, 20 June 2005 02:48
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Unless its a ford pinto which has the firing order of 1-2-4-3
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Wouldn't that still necessitate 1 & 4 being joined, and 2 & 3 being joined? (for 4-2-1 style).
Actually, i'm 90% sure it's not even possible to design a crank that would be balanced and have a firing order that would require 1 & 2 being joined and 3 & 4 being joined... (for an inline-4 that is)
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