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What did you do to your Yamaha today?

Discussion in 'XJ Technical Chat' started by Cutlass84, Jun 4, 2007.

  1. Lodewijk

    Lodewijk Member

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    Started cleaning the cylinder head of my XJ550. Any tips on how to easiest clean the head and pistons and get rid of the carbon build-up? I'm just using a toothbrush, sponge and dish soap (and a lot of elbow grease) atm, but some of those spots are being stubborn.

    [​IMG]
     
  2. Franz

    Franz Well-Known Member

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    An aircooled Beetle with the boot at the front, great old cars they were.
     
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  3. Franz

    Franz Well-Known Member

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    Acetone and Automatic Transmission fluid I think the guys on the forum use, a 50/50 mix. Let the parts soak in it.
     
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  4. Timbox

    Timbox Well-Known Member

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    B12 Chem tool in a pour can works great as well. It really brakes down that carbon.
     
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  5. Craig B

    Craig B Active Member

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    Changed the oil on Sunday and must have been distracted as I topped up the last little bit of oil because I forgot to put the oil cap back on.
    I drove to work and back before noticing it missing. Heart attack ensued.
    In the haze of my panic I looked down and there it was sitting caught up between the engine and the frame.
    Amazingly didn't lose a drop of oil.

    All is right with the world again. o_O
     
    Last edited: Jun 18, 2019
    chacal, Jetfixer and Lodewijk like this.
  6. Jetfixer

    Jetfixer Well-Known Member

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    An drill with a brass wire wheel will clean it up quick .
     
  7. Franz

    Franz Well-Known Member

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    I did the same with my car and fortunately no damage was done. Caught it quickly.
     
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  8. XJ550H

    XJ550H Well-Known Member Premium Member

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    still fighting with a carb bowl to clear enrichment wells
     
  9. Jetfixer

    Jetfixer Well-Known Member

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    Try soaking in Berrymand carb B11 and acetone for several hours ..worked on mine anyways :)
     
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  10. Craig B

    Craig B Active Member

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    Installed a new front tire and changed the bearings in the wheel.
    Now its raining again. :confused:
     
  11. Uxbridge Brule

    Uxbridge Brule Active Member

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    One step forward one step back.
    Fixed a leaking frork seal yeah!!!! Took it for a ride all good! Yeah!!
    Got into the driveway heard the exhaust sounding different. Boo!!! The one spot I used exhaust putty on before I took off the crossover box and welded it a bunch(lost of holes) decided it let go but is still hanging on so lots of grinding in my future and welding on my back. Boo!!!
    But I can still ride, yeah!!@
     
  12. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Nothing...again. SO many days of looking at her sit in the corner of the garage every time I have to cut a peice of molding for the house.

    I've promised her we'd take one good ride before she goes into storage while we look for a new house, but there is so much to do before the move, and so little time to do it in.

    Moving sucks. The heat and humidity aren't helping either.
     
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  13. Jetfixer

    Jetfixer Well-Known Member

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    Looked at bike ...more RAIN and temp 61 degrees ..this is June last I looked ... Saturday guess what Rain :mad: this weather is so weird .
     
  14. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    I've had enough rain, but will take that 61º.
    It was 90 today, with near 60% humidity. 95 tomorrow.
     
  15. XJ550H

    XJ550H Well-Known Member Premium Member

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    got it done.
     
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  16. firebane

    firebane Active Member

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    Turns out I have BR7ES plus and caps at Ohms at 7700, 4800, 4500, and 4800 . I know 3 of the 4 fall into spec but one is way out.

    So now its time to order plugs and new caps.... question is that I can't seem to find an answer on.. which caps?

    VB05FP and LB05FP?
    or
    LB05F and XB05F?

    Bike is a 82 Seca 650
     
  17. XJ550H

    XJ550H Well-Known Member Premium Member

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    In Canada you got resistor plugs in the xj from what I have read on the forums.

    you will need caps that fit the head to wire space with proper angles

    if you use resistive plugs you can use non resistive caps
     
    Last edited: Jun 22, 2019
  18. firebane

    firebane Active Member

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    I can get non-resistor plugs so I am. And getting resistor caps... But I need to know which part numbers for ngk.
     
  19. XJ550H

    XJ550H Well-Known Member Premium Member

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    caps are sold for size of spark plug thread and angle

    from XJ4ever catalog
    inside cylinders
    short 120-degree angled boot, for 14mm "B" plugs with a threaded stud on top. Suitable replacement for the stock plug caps on the outer (#1 and #4) cylinders. Slightly taller than original caps (2.0" tall for these replacements versus 1.3" tall for the originals), and the 120-degree angled plug wire end offers some additional clearance as compared to the stock 90-degree right-angled caps.
    tall 102-degree angled boot, for 14mm "B" plugs with a threaded stud on top. Recommended on the inner cylinders (#2 and #3) as replacements for the non-available tall 90-degree tip caps. Approx. 3.25" tall vs. the 2.5" tall originals.

    straight, for 14mm "B" plugs with a threaded stud on top. Can be used on inner cylinders (#2 and #3) as replacements, especially when using aftermarket plug wires and coils. Approx. 3" tall vs. the 2.5" tall originals.

    out side cylinders
    short 90-degree angled boot, for 14mm "B" plugs with a threaded stud on top. Great replacement for the stock plug caps on the outer (#1 and #4) cylinders. Slightly taller than original caps (1.5" tall for these replacements versus 1.3" tall for the originals)

    short 120-degree angled boot, for 14mm "B" plugs with a threaded stud on top. Suitable replacement for the stock plug caps on the outer (#1 and #4) cylinders. Slightly taller than original caps (2.0" tall for these replacements versus 1.3" tall for the originals), and the 120-degree angled plug wire end offers some additional clearance as compared to the stock 90-degree right-angled caps.

    this link tells how to read part number of the cap

    http://www.ngkpartfinder.co.uk/files/NGK_Spark_Plug_Covers.pdf

    VB05FP = 120degree long 14mm plug 5k resistor terminal stud special water proof cover

    L is 90 degree
     
    Last edited: Jun 22, 2019
  20. firebane

    firebane Active Member

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    Well based off that looks like I'll be ordering VB05FP and LB05FP
     

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