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  1. MadRat 88

    Cam chain adjustment on a 79 motor

    I have adjusted the cam chain on my 80 and and 81 motors, I am now doing the same on a 79 that's in my garage. I took off the acorn nut, and I thought it looked odd. A quick watch of littlebill's adjustment video and I was right. This motor does not have the nut inside of the acorn. Are there...
  2. MadRat 88

    Brake light won't light up.

    I have an 80' XS, Pamco igniton and PMA. Very simple wiring. I came home last night and had to relocate my tail light, long night of work so I forgot to disconnect the battery before detaching the brake light. I have continuity through all my wires, and the inline 10 amp fuse is still intact...
  3. MadRat 88

    Compression low, now what?

    I just did a compression test on my 81', been throwing parts at it for weeks with no results and the same outcome... no top end. The compression is at 100psi on both sides, warm and cold. I would guess poor compression affects top end performance??? Any suggestions where to start next? links...
  4. MadRat 88

    Frustrated, changing parts, doing tests, same results.

    I'm having trouble getting my 81' dialed in. I'm running open pipes, 45 pilot, 142.5 mains, new XS performance ignition coil and stock TCI. I have adjusted valves, checked timing, changed TCIs, switched plug wires and I keep getting the same response out of my rig. I don't have any guages on the...
  5. MadRat 88

    Changing ignitions from TCI to points

    I have an 81' xs currently set up with a stock TCI ignition. I've gone thruough everything in the carbs, swapped TCI's and coils and adjusted every idea that has been thrown at me and still can't get past the "bucking" when I get to high RPMs. The bike will not go over 60mph. The left cylindar...
  6. MadRat 88

    Picked up a timing light, how do I use it?

    I have had an issue for the past couple weeks with my 81' not getting any top end. I've been through the carbs, up and down with jet sizes and keep getting the same result. I talked to a couple "old timers" and both told me to hook up a timing light and see where it's at. Well I got the light...
  7. MadRat 88

    Have a case of the carb tuning blues

    This is my first post on the forum, I've been an info stalker up until now. I have an 81' xs 650 chop, stock elec. ignition and I'm running open pipes. I have adjusted the valves, re-built the carbs, adjust cam timing, vented the tank and keep coming up with the same problem, I can't get over...
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