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Exhaust question / firing order

Discussion in 'XJ Technical Chat' started by 7DAYSLAVE, Feb 22, 2008.

  1. 7DAYSLAVE

    7DAYSLAVE New Member

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    I have the haynes manual, but i cant find a firing order in it. I was wondering what it was so I can route the headers differently off the front of the motor. can anyone help?
     
    7DAYSLAVE, Feb 22, 2008
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  2. schmuckaholic

    schmuckaholic Well-Known Member

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    I was going to mention the bit on page 143 about the coil sparking two cylinders at once, but I see what you're getting at.

    The book does say one coil controls 1&4, the other 2&3; from that, we can infer that the firing order alternates between outer and inner cylinders. Near as I can figure, that gives us either 1-3-4-2 or 1-2-4-3.

    WAG (Wild-assed guess), but it's the best I've got.
     
    schmuckaholic, Feb 22, 2008
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  3. TIMEtoRIDE

    TIMEtoRIDE Active Member

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    It's 1-3-4-2 with 1 being your left knee. So to even out the pulses, join 1 and 4 into one collector, 3 + 2 into the other. Add a cross-over for less noise, or a different sound, or just to complicate things. The hard part is bending 4 around over the middle pipes without it looking goofy.
     
    TIMEtoRIDE, Feb 22, 2008
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  4. 7DAYSLAVE

    7DAYSLAVE New Member

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    I was afraid of that, but I will try to think it up. Thanx for the help fellas......once I get started I will post pics
     
    7DAYSLAVE, Feb 23, 2008
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