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Thread: Plugs and leaded gas...

  1. 11-09-2003, 05:45 PM #1
    Glamis400ex
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    Plugs and leaded gas...

    Hey Gang,

    I just got back from Glamis and am in the process of checking the plug. I used a mix of 110 leaded and 91 mixed 50:50. I have the cooler plug for the 400ex, the DPR9Z.

    If someone has a pic of a properly jetted plug running 50:50 mix and can send me a pic, that would be cool. I've never dealt with leaded fuel before so it looks a little different.

    The electrode and insulator look pretty good, the insulator nose is grey and very slightly tan and comes about all the way to the top of the nose but I have a dry whitish film on the area that surrounds the insulator.

    I'll take a pic if someone wants to post it for me.

    Glamis

    alinerica@cox.net
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  2. 11-10-2003, 08:17 AM #2
    cals400ex
    cals400ex is offline Registered User
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    sorry, i can't help with the leaded fuel. however, on 93 octane i find it to be jetted right when you will see a change in color right on the bend of the plug. it will change from a gray to a tan/brown color. i would assume that change would still be shown with the leaded fuel, but i am not positive since i have never used it. yeah, a pic would be nice.
    2005 450r

    *sold* 2001 400ex

    "If you think you can, you can. If you think you can't, your right."

    "A leader will take you where you want to go. A great leader will not necessarily take you where you want to go but where you ought to be."

    "If you want to do something, you will find a way; if you don't, you'll find and excuse!"

    "Its not aptitude but attitude that determines your altitude."
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  3. 11-10-2003, 10:59 AM #3
    YZROOSTINYA's Avatar
    YZROOSTINYA
    YZROOSTINYA is offline I like your daughter
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    i run leaded, plug is stll tan with a grey tint
    when in doudt, GAS IT!
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  4. 11-10-2003, 05:03 PM #4
    Glamis400ex
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    cals400ex,

    post my pic for me, send me your email addy.

    alinerica@cox.net

    Glamis
    NEW RIDE.....
    Houser Framed '02 CRF450 Hybrid. Powdercoated gold, chrome Houser sub-frame, Houser +4 no-link swingarm, +2 houser a arms, Houser stem, Tag T2 bars, +4 Dominator2 axle, Elka rear shock, Fox Float front shocks, Hardkore hubs, Dream waterpump cover, Dream clutch cover, Fullbore plastic, AC Pro-pegs,braided brake lines, and more....
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  5. 11-10-2003, 10:34 PM #5
    cals400ex
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    sorry dude, i don't know how. i read your post wrong the first time. i thought you said you were going to post a pic. do you need a scanner for that?? if so, i don't have one here. i am sure we can get someone to do this that knows how.
    2005 450r

    *sold* 2001 400ex

    "If you think you can, you can. If you think you can't, your right."

    "A leader will take you where you want to go. A great leader will not necessarily take you where you want to go but where you ought to be."

    "If you want to do something, you will find a way; if you don't, you'll find and excuse!"

    "Its not aptitude but attitude that determines your altitude."
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  6. 11-10-2003, 10:42 PM #6
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    Chef
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    You should be fine. My plugs never get good brown color, but the head temp checks say that its running fine!
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  7. 11-11-2003, 08:39 AM #7
    MIKE400EX
    MIKE400EX is offline Senior Member
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    Sounds like it's very close Glamis. How did it run with all the new mods?
    Mods: Big Gun FS w/MM quiet core, no lid , K&N, FCR41, 11.3:1 440 and Web 479 cam, porting, no choke. Works TRS fronts & Ultracross rear shock, a few other goodies
    450R,250EX, Blaster, Banshee
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  8. 11-11-2003, 05:33 PM #8
    Glamis400ex
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    My jetting is as follows:
    168 main
    42 pilot
    needle 4th clip down
    2 and 3/4 turn out on air screw
    K&N
    no airbox lid.

    Mike,

    She ran great, I ran it solid, but didn't over do it. No smoke!!

    Glamis
    NEW RIDE.....
    Houser Framed '02 CRF450 Hybrid. Powdercoated gold, chrome Houser sub-frame, Houser +4 no-link swingarm, +2 houser a arms, Houser stem, Tag T2 bars, +4 Dominator2 axle, Elka rear shock, Fox Float front shocks, Hardkore hubs, Dream waterpump cover, Dream clutch cover, Fullbore plastic, AC Pro-pegs,braided brake lines, and more....
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  9. 11-11-2003, 05:40 PM #9
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    250rpilot
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    glamis, i noticed on my R, after running 50/50 93 octane with vp c-12 (108 leaded) and golden spectro @ 52:1, my plug was a sort of orange color, on my previously light/medium tan plugs.......my guess is the leaded gas is the culprit.
    87 250r
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