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Will degreeing the cams require a jetting change?

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    Will degreeing the cams require a jetting change?

    Might finally get around to bolting the 1100 back together. (So hard to hang out in the garage when the weather's so nice). Bike is a stock '82 1100E (not bored, factory exhaust, airbox, and filter).
    Head has been refreshed but not modified. Will keep original cams also. Wondering if degreeing the cams, to 106 if I remember the recommended setting correctly, will require a jetting change.
    Would it just be the mains and any suggestions as to how much an increase would be a good place to start? Stock size on the mains is 110.

    #2
    Degreeing will clean up any factory production slopiness and make the motor run smoother and as advertised. While highly beneficial, without any other mods, re-jetting should not be required. You are not changing the amount of air the engine flows, you are setting the cam timing precisely as it was designed from the factory. Remember you need to have the stock cam sprockets slotted so they can be degreed. Good Luck, Ed.

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      #3
      Hey I want to do it too.

      I got a 82 1100E and want to degree the cams to 106 too. Question is How do you do it and where do I look for info about it. I'm down to 7.57 in the 1/8 mile and hope this helps.

      Thanks
      Jake
      1166cc 1/8 ET 6.09@111.88
      1166cc on NOS, 1/8 ET 5.70@122.85
      1395cc 1/8 ET 6.0051@114.39
      1395cc on NOS, 1/8 ET 5.71@113.98 "With a broken wrist pin too"
      01 Sporty 1/8 ET 7.70@92.28, 1/4 ET 12.03@111.82

      Comment


        #4
        Re: Hey I want to do it too.

        Originally posted by RacingJake
        I got a 82 1100E and want to degree the cams to 106 too. Question is How do you do it and where do I look for info about it. I'm down to 7.57 in the 1/8 mile and hope this helps.

        Thanks
        Jake
        Take a look here. http://medlem.spray.se/biker66/index.html
        Click "My Modifications" on the left. Then "Cam Timing".
        These are the instruction I intend to follow.

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          #5
          Thanks for the info. It's just what I was looking for.

          Jake
          1166cc 1/8 ET 6.09@111.88
          1166cc on NOS, 1/8 ET 5.70@122.85
          1395cc 1/8 ET 6.0051@114.39
          1395cc on NOS, 1/8 ET 5.71@113.98 "With a broken wrist pin too"
          01 Sporty 1/8 ET 7.70@92.28, 1/4 ET 12.03@111.82

          Comment


            #6
            If you can get a copy of a book titled "Superbike Preperation" by Jewel Hendricks, it goes into detail on this subject and many others dealing with engine and suspension modifications. It was written in the mid 80's and it deals with these older bikes before fuel injection and shim-under bucket valve trains became the norm. My copy is full of greasy thumbprints, it is well worth the $20 or so bucks. Ride On, Ed.

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