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Pre riding season work up 82 650 maxim

Discussion in 'XJ Technical Chat' started by caniculaveritas, Feb 19, 2009.

  1. caniculaveritas

    caniculaveritas Member

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    So I've been lurking around for a while, enjoying the vast knowledge here and even poking questions at rickomatic and others for info....especially carb related. I've had plenty of experience with fuel injected cars and tuning those beasts with friends cars but carbs truly eluded me beyond the venturi effect and that jets are holes which meter the fuel.

    History of Bike
    I bought the bike off a friend who owned it for a year and learned to ride on it, now he's moved on to a 929 he built and sold it to me for $700. Going in all i knew was that it was shaft drive, inline 4, mac 4-1 and a yamaha with 35k on it. It's relatively clean but after learning how to ride on it last summer it started to show some age. It fired right every time with varying levels of choke. The starter clutch might be going...once out of every 10-15 starts it will catch and then "spin" and I have to wait for it to "spin down" and catch again then it starts right up. Might be addressing that issues this work up. The list of "must" get done tasks include:

    1. fixing oil leak on the front of the block (head gasket) and bottom side leak (thinking sump gasket)
    2. valve shim job/take head to get exhaust side filled and milled because of p.o. using what can best be described as coarse wall anchors.
    3. carb reuild/clean...figure i knew it ran when i parked it so if it doesn't start when i put it back together its my fault somewhere in the reuild
    4. strip to main frame and blast/por15 all surface rust
    5. clean and paint tank
    6. fork seals/oil change
    7. chacal's spin on oil adapter
    8. wrap exhaust/fab up slip on to replace mac muffler with turn out.

    This winter was going to be a fuel injection swap using microsquirt but that got pushed off due to budget limitations and the desire to get a grip on carbs...they fascinate me...literally.

    Now I know this has been done before but I want to use this to add a few things to the discussions here.
    1. I am going to attempt to clean the carbs using a different method/cleaning agent initially on each one. So far i've used white vinegar with some random shots of MAF sensor cleaner when i wanted to blast out a crevice. Ultrasonic cleaner, simple green and reg. carb cleaner. I'm open to suggestions anyone wants to see results of.

    2. PICTURES all the resident knowledge gods here are awesome, but we all know how hard it is to explain some things to other people without good photos. So with that said, if you want a picture of something during this process just let me know and I will document the bejesus out of it for you if i can.

    Any suggestions along the way would be appreciated!

    -Aaron

    (sorry if its not the best written post, its late and wanted to get this up here asap so I would be more motivated to get out there and pick up the tools asap.)
     
  2. HalfCentury

    HalfCentury Member

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    I soaked a rack of uppers in 3 gallons of vinegar for a couple of days and scrubbed and rotated often. The problem with using vinegar on a rack is that it deposits/creates tarnish on the brass parts. I think that you should not soak dissimilar metals in vinegar.

    Boiling lemon juice is the fastest and safest cleaner. It has the added advantage of softening varnish and other gunk stuck in your enrichment circuit of the carb bowls so that you can shoot out the crud by pulling out the bowls one-at-a-time and wedging the carb spray tube into the enrichment circuit's entrance.
     

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