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Anyone wanna double check my work?

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    Anyone wanna double check my work?

    Alright so I did a valve job a month or so ago...wrong. Turns out my manual either told me how to do it wrong or I'm just really dense. Either way I missed a couple that needed to be adjusted and adjusted one or two that shouldn't have been. I'm riding a 1980 gs550 and I followed the guide on bikecliff's website. Just to double check, I do the exhaust cam first with #1 pointing towards the front tire and parallel with the engine head side. Then I check both #1 and #2 on the exhaust. Next I go to the intake and #1 should be pointed perpendicular to the head. I check #1 and #2 on the intake. On the other side it's the same but #4 is either parallel or perpendicular to the head instead of 1. If I'm doing anything wrong that would be great cause I don't wanna do this a third time, sorry for being so paranoid.

    Also when doing the timing on it, it's the "t mark" next to the 1-4 and not the mark above the 1-4 correct? I attached a picture of the "t-mark"

    #2
    You must have seen Basscliff's valve clearance stuff,nicely explained with lovely photos

    http://members.dslextreme.com/users/bikecliff/images/gs850valve_adjust.pdf

    your pic shows TDC lined up with mark, so it's a good time to check camshafts to crank timing IF you want to.

    EDit; don't forget the crank makes TWO revolutions for one camshaft revolution
    Last edited by tom203; 07-09-2013, 07:48 AM. Reason: info
    1981 gs650L

    "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

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      #3
      Originally posted by tom203 View Post

      EDit; don't forget the crank makes TWO revolutions for one camshaft revolution
      And there's where I went wrong last time, you wouldn't happen to know off the top of your head which one is top dead would you?

      Edit: The camshafts are out which is why I need to do timing if you were wondering

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        #4
        Originally posted by Scaxx View Post
        And there's where I went wrong last time, you wouldn't happen to know off the top of your head which one is top dead would you?

        Edit: The camshafts are out which is why I need to do timing if you were wondering
        The camshafts are out and you're worried about valve clearances?? no problem till you put it back together!

        TDC is for #1 cylinder (starting down on firing stroke -both valves closed) at same time #4 is about to do its intake thing; one crank revolution later, they are vice versa.
        1981 gs650L

        "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

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