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Cam Timing TSCC 750AN

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    Cam Timing TSCC 750AN

    I may be overthinking this but i just finished replacing the leaking head gasket on my 81 GS750L.
    I installed the cams per the manual I downloaded from basscliffs site and thought it was strange that cylinder 4 was at TDC compression and not cylinder 1.
    Just noticed that when I was setting valve clearance and had to rotate crank one revolution to get Cylinder 1 at TDC compression.
    Thoughts?

    #2
    If you can rotate the crank and valves don't hit pistons then you've pretty much got it right.
    Current:
    Z1300A5 Locomotive (swapped my Intruder for it), GS450 Cafe Project (might never finish it....), XT500 Commuter (I know - it's a Yamaha )

    Past:
    VL1500 Intruder (swapped for Z1300), ZX9R Streetfighter (lets face it - too fast....), 1984 GSX750EF, 1984 GSX1100EF (AKA GS1150)
    And a bunch of other crap Yamahas....

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      #3
      Im quite confident i got it right just seemed weird that cylinder 1 wasnt at TDC compression. Dont see how i could have gotten it 180 out since the crank will either be tdc 1-4 or tdc 2-3. If i turn the crank one revolution to get to tdc compression cylinder 1 the cam marks are off, rotate again to achieve tdc compression on cylinder 4 and the cam marks are perfect.

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        #4
        The cams move at half the speed of the crank so if you rotate it another 360 then the cams will line up with #1.
        Current:
        Z1300A5 Locomotive (swapped my Intruder for it), GS450 Cafe Project (might never finish it....), XT500 Commuter (I know - it's a Yamaha )

        Past:
        VL1500 Intruder (swapped for Z1300), ZX9R Streetfighter (lets face it - too fast....), 1984 GSX750EF, 1984 GSX1100EF (AKA GS1150)
        And a bunch of other crap Yamahas....

        Comment

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