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What did you do to your Yamaha today?

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

  1. StorminNorman

    StorminNorman Member

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    If you have good paint and the rust isn't that bad, you can try a diluted vinegar solution first. My tank had manageable rust from sitting with about a gallon of old gas in it for 10 years. I filled the tank up with a 50/50 vinegar solution a bunch of drywall screws and let it sit for a couple of weeks. I'd occasionally pick up the tank and shake it and let it sit. When it was time to empty it I'd filter out the rust into a coffee filter and so I could reuse the vinegar solution if I needed to. I then took the tank into the yard and grabbed some dawn and gave it a good rinse to get all the vinegar out. After which I immediately sprayed the inside down with WD40 to keep the flash rust away. Ended up working out great. Just had to be patient.
     
  2. Dan Gardner

    Dan Gardner Well-Known Member Premium Member

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    Straightened out a 750 Seca tank! It will live to ride another day!
    DFD14203-9E8A-4E95-AB40-486D9EC98353.jpeg
     
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  3. Fuller56

    Fuller56 Active Member

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    @Dan Gardner nice job on that tank.
    Today I got the replacement 750 motor into the titled 650RJ frame. Not mounted but in there. These motors have gotten heavier since the last time I moved one.
     
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  4. Uxbridge Brule

    Uxbridge Brule Active Member

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    Front brake pads done then an early morning ride to seat them. In the afternoon took the better half out for a lesson in the different feel of an 750 inline 4 accelerating and a 1400 v-twin. She liked them both but loved the seat on the Maxim
     
  5. Jetfixer

    Jetfixer Well-Known Member

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    My Seca was ticking so pulled valve cover , number four intake clearancewas very loose . I realized the last time I did the adjustment I set the clearance with SAE not metric , recently bought metric feeler gauges , made such a rookie mistake surprised the other valves were not further out . Of course I did not have the exact shim but robbed a shim out of my spare engine I needed a 265 but used a 270 it is a little tight but could still get feeler gauge in . Of course in my haste the valve cover seal was not in right on the left side so had a big oil leak , finally got it in . I had not pulled the plugs out in awhile was happy number two was slightly lean but the rest had a light brown tip gave number two a half turn out turn . The ticking is gone took it out for a little spin was nice to ride even if it was short .
     
  6. Jetfixer

    Jetfixer Well-Known Member

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    So bike was running good took it out and was running rough ??? Checked to make sure fuel line was not kincked was okay , went to check to make sure plug cap was seated while bike was running ....and shocked the crap out of me the cap fell apart . I have spare caps replaced and running great again .
     
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  7. Vern Nelson

    Vern Nelson Member

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    Spent the day designing integrated turn signal mounts for the Blue Turbo so I can take it in for a safety.
    The safety guy said the lens had to have a valid DOT marking on it.. so I couldn't just print the lens. (Sad Face)
    Front lenses are as rare as hen's teeth and worth more than I paid for the bike.
    But back lenses are as common as dirt..... Hmmm! What to do? What to do?

    So,,, I present my solution! In red. I like red. I had red. It'll probably be black.
     

    Attached Files:

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  8. Dan Gardner

    Dan Gardner Well-Known Member Premium Member

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  9. Huntchuks

    Huntchuks Well-Known Member

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    Nice hack. Make the lens and after inspection put it on.
     
  10. Vern Nelson

    Vern Nelson Member

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  11. Vern Nelson

    Vern Nelson Member

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    I have considered that.... I could also put the lenses from my good turbo on for the inspection.
    However, in an era of policing for profit, I'd go with what passed inspection rather than risk some stupid ticket.
     
  12. k-moe

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

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    Yesterday I rebalanced the front wheel (lost a wheel weight the other day). Today I snapped one of the clamping bolts for the lower triple clamp. Then I backed it out with a left-twist drill and replaced all four with new bolts.
    Remember fellas, bolts and studs are not forever. They elongate every time they get torqued down, and eventually they become fatigued and twist apart. I had only applied about 1/2 of the required torque when she busted.
     
  13. Uxbridge Brule

    Uxbridge Brule Active Member

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    Removed rear wheel to drop it off tomorrow for a new tire. Got a message from the shop today that said " got your front tire that you ordered in". I hope that it's not a front tire?%!! Will call before I make the drive. On a good note the rear pads look good no de-lamination and have lots of meat left.
     
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  14. k-moe

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

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    FWIW I ran a front on the rear until the wear bars were showing. Unfortunately Harleys use the same size front as the 750's have for rears, so shops are prone to mis-order. Fortunately that means when you are on a multi-week trip and overestimate how much rear tire you have left it's pretty easy to get a new tire the same day.
     
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  15. RJ C

    RJ C Member

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    Pulled the plugs and they are all sooty black and not wet. Decided it was time to replace the stock coils/wires so of course I reached out to Len and they are on the way here. Just for fun I ran the colortune and here’s what it had to say…

    1,2,3,4

    7E76E5DA-6276-48D4-90D1-6357AF2F54FF.jpeg B58167F2-DA53-4245-BAFB-6C84A9B0489B.jpeg C01B2BBE-125B-486A-86A0-59C3F9F86757.jpeg BBEE3BE1-E08B-4DE1-8E02-113A814D963B.jpeg
     
  16. Huntchuks

    Huntchuks Well-Known Member

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    #3, yikes! If I remember right, yellow = rich, white = lean, bunson blue = correct. Unfortunately the range of blue can be large and if your plugs are sooty you need to turn the screws in till the color is white and then back them out to the blue range. Then fine tune after running the bike on the road a bit.
     
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  17. Door dude

    Door dude Active Member Premium Member

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    I'm interested in what people think about what's going on in #2 and 3. #2 has hardly any flame. #3 is orange. I'm stumped.
     
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  18. Franz

    Franz Well-Known Member

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    I wonder if the valve clearances are tight on 2 running rich on 3.
     
  19. RJ C

    RJ C Member

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    I ended up doing the valves about two years ago, and unfortunately wasn’t really able to ride more than 20 miles during that time. I just got done giving the carbs a good cleaning, I took them to church when the valves were done and they really were too bad. I did reset the mixture screws to 2.5 turns out from bottom but it seemed like it was running rich. I turned them all in .25 turn and that’s when I checked the colortune and got the above results.

    Is it possible for stock ignition coils to get so bad that it could cause the issue with the #2 and not provide enough of a spark all of the time? #2 would show blue combustion erratically, maybe 20% of the time, I could see spark every time but not always combustion.
     
  20. maxim400

    maxim400 Member

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    cleaned the carbs on my 80 650 maxim, set the float levels etc and reinstalled the carbs on the bike, hopefully tomorrow I can fire it up and set up idle , and maybe sync the carbs .
     

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