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Mixed up headers...

Discussion in 'XJ Technical Chat' started by MadCowInk, Apr 18, 2011.

  1. MadCowInk

    MadCowInk Member

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    OOPS...took the headers off my 82 XJ750, forgot to mark them. Is there an easy way to figure out wich one goes where besides trial and error? just askin'...
     
    MadCowInk, Apr 18, 2011
    #1
  2. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    Sure is.

    Look VERY CAREFULLY at the pipes; it's usually down right where they join to the collector. Each exhaust pipe has an abbreviated part number on it; on my 550s it says "YAMAHA 4G0-1," "-2," "-3" and "-4." The "dash-1" is the number one pipe, etc. On the 550s it's on the left side of the pipes, your may be in a different location, but if they're stock Yammie pipes the part number is on them somewhere.
     
    bigfitz52, Apr 18, 2011
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  3. MadCowInk

    MadCowInk Member

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    Thanks, I checked some online photos and the numbers are located right where you said they would be. Now I just need to undo a few inches of header wrap to read them all...grr...arrgh!
     
    MadCowInk, Apr 18, 2011
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  4. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    Oh, c'mon the little "dash" numbers are't that far from the ends.

    Question about header wrap (just askin' because I can't figure it out) doesn't it GET DIRTY? Like when you get caught in the rain? Then what?
     
    bigfitz52, Apr 18, 2011
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  5. MadCowInk

    MadCowInk Member

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    Since we're on the topic, I assume they go back on in order 1,2,3,4 starting on the shifter side?...
     
    MadCowInk, Apr 18, 2011
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  6. MadCowInk

    MadCowInk Member

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    the wrap is purely for cosmetic purposes, black wrap, silicone coated...
     
    MadCowInk, Apr 18, 2011
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  7. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    1-4 left to right as you sit on the bike.

    OK, so it's black and silicone coated. Doesn't it have kind of a "fabric" surface? Doesn't it get dirty and then how do you clean it? What happens to the cosmetic value after 6 hours riding in the rain? Does it "weld" together and stick to the pipes?

    I would honestly like to know; the headers on my 650 will never be chrome again and I'm considering all options but I can't see how that stuff can hold up, looks-wise, once dirty.
     
    bigfitz52, Apr 18, 2011
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  8. MadCowInk

    MadCowInk Member

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    MadCowInk, Apr 18, 2011
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  9. MadCowInk

    MadCowInk Member

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    I'll let you know how the wrap holds up. If it ends up as lousy as you say, I can always peel it off and powder coat'em.
     
    MadCowInk, Apr 18, 2011
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  10. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    Re: the number-- yes it is.

    I didn't say it was lousy, I was asking. Powder coat doesn't work (too hot) but Jet Hot Coating does. That's what I'll probably do, since no plater will touch old dual-walled exhaust pipes.
     
    bigfitz52, Apr 18, 2011
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  11. MadCowInk

    MadCowInk Member

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    Thanks for the info Fitz.
     
    MadCowInk, Apr 18, 2011
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