Announcement

Collapse
No announcement yet.

Bent intake valve #4 WHY ideas !

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • #16
    Originally posted by vedgar View Post
    Gonna look for mid spec, shim if it is on the tight side. I dont have extra shims to shufffle around. Have a 79 SF with 26k on the clock and have not touched it (adjusted) in 2500 miles. Still sounds quiet.
    Vance
    Thats when you want to check them. The gap closes up (gets quieter) as time goes by.
    So If I were you, I'd check the clearances.

    CZ

    Comment


    • #17
      Originally posted by vedgar View Post
      Gonna look for mid spec, shim if it is on the tight side. I dont have extra shims to shufffle around. Have a 79 SF with 26k on the clock and have not touched it (adjusted) in 2500 miles. Still sounds quiet.
      Vance
      P.S. Have a couple airhead BMWs', have to check them every oil change. Simple as pie to do them, not like the cover on my XSsssss' . I love all my 2 wheeled children.
      Set them to the widest spec. Properly adjusted it sounds like the engine is gonna fly apart but that's where it'll run best.
      Greg

      Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”

      ― Albert Einstein

      80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.

      The list changes.

      Comment


      • #18
        New valve delivered today

        Should have running by Friday .
        79 1100 SF Carmine Red stock
        85 Honda v65 Magna
        70 Yamaha HS1 90cc twin Californian Orange
        02 Road King (retirement gift)
        First bike-s 2-1967 Yamaha YM2C Big Bear Scramblers

        Comment


        • #19
          In case you didn't know, BMW shims are the exact same size as our XS11 shims, so you'll have more options when looking for shims.
          Hi, my name is George & I'm a twisty addict!

          80G (Green paint(PO idea))
          The Green Monster
          K&N A/F, TC's fuse block, '81 oil cooler, TC's homemade 4-2 w/Mac Mufflers, Raptor 660 ACCT
          Got him in '04.
          bald tire & borrowing parts

          80SG (Black w/red emblems & calipers)
          Scarlet
          K&N A/F, TC's fuse block, WJ5, Shoei bags, Raptor 660 ACCT.
          Got her in '11
          Ready for the twisties!

          81H (previously CPMaynard's)
          Hugo
          Full Venturer, Indigo Blue with B/W painted tank.
          Cold weather ride

          Comment


          • #20
            Bent Exhaust Valve

            I had the exact same experince with one of my XS750s I purchased with 18k miles on it.

            Hadn't been run in years.....#2 Exhaust Valve bent slightly...no evidence of collision with piston or intake valve....cam timing correct.....

            Eventually I noticed some chewed up links in the cam chain, thankfully as I was still assembling it. I think in my case the cam chain might have worn loose from not being adjusted, then it slipped, and someone put it back. It's all I could guess after looking at the parts.

            In your case, we all don't imagine a loose chain at 2200 miles.

            We're all looking forward to hearing that it's running again. It's way too beautful to sit in the garage unused.
            -Mike
            _________
            '79 XS1100SF 20k miles
            '80 XS1100SG 44k miles
            '81 XS1100H Venturer 35k miles
            '79 XS750SF 17k miles
            '85 Honda V65 Magna ~7k miles
            '84 Honda V65 Magna 48k miles (parts bike)
            '86 Yamaha VMAX 9k miles

            Previous: '68 Motoguzzi 600cc + '79 XS750SF 22k miles +'84 Honda V65

            Comment


            • #21
              Waiting for new Pilot jets

              Had running to make some preliminary checks. carbs back off for now
              79 1100 SF Carmine Red stock
              85 Honda v65 Magna
              70 Yamaha HS1 90cc twin Californian Orange
              02 Road King (retirement gift)
              First bike-s 2-1967 Yamaha YM2C Big Bear Scramblers

              Comment


              • #22
                That is what I call PROGRESS!
                Skids (Sid Hansen)

                Down to one 1978 E. Stock air box with K&N filter, 81H pipes and carbs, 8500 feet elevation.

                Comment


                • #23
                  5 degrees F for tomorrow morning.

                  Between the bathroom remodel and Christmas stuff, have to put off Bike work for now. Updates when dialed in. Thanks
                  Vance
                  Colder than normal for this time of year in Michigan
                  79 1100 SF Carmine Red stock
                  85 Honda v65 Magna
                  70 Yamaha HS1 90cc twin Californian Orange
                  02 Road King (retirement gift)
                  First bike-s 2-1967 Yamaha YM2C Big Bear Scramblers

                  Comment


                  • #24
                    Running great now

                    carbs dialed in .Took pics of timing marks as not to second guess myself if something did not seem right. I can look at the pics and at least verify the timing is spot on .
                    Vance
                    79 1100 SF Carmine Red stock
                    85 Honda v65 Magna
                    70 Yamaha HS1 90cc twin Californian Orange
                    02 Road King (retirement gift)
                    First bike-s 2-1967 Yamaha YM2C Big Bear Scramblers

                    Comment

                    Working...
                    X