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Swampthing sprung a leak...

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  • #16
    Thanks Randy
    1980 XS650G Special-Two
    1993 Honda ST1100

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    • #17
      Ben, I know you said no valve cover leak, but that's where most of them will show up if it's leaking on the left side. Especially in that U-shaped area around plug #2. Get a flashlight and look in where the #2 spark plug is and see if it's getting wet in there. It likes to blow through the head, hit the #1 or #2 carb holder, and drip down right onto that top fin of the cylinders where the head meets the cylinders. The way the motor sits, and most lean on sidestand, it'll run down around and drip at the front there looking like a head gasket. BUT... a leaky cam chain tensioner can make it up and through there the same way.

      Poor Randy is shaking his head at what's become of his beauty..
      Try your hardest to be the kind of person your dog thinks you are.

      You can live to be 100, as long as you give up everything that would make you want to live to be 100!

      Current bikes:
      '06 Suzuki DR650
      *'82 XJ1100 with the 1179 kit. "Mad Maxim"
      '82 XJ1100 Completely stock fixer-upper
      '82 XJ1100 Bagger fixer-upper
      '82 XJ1100 Motor/frame and lots of boxes of parts
      '82 XJ1100 Parts bike
      '81 XS1100 Special
      '81 YZ250
      '80 XS850 Special
      '80 XR100
      *Crashed/Totalled, still own

      Comment


      • #18
        Originally posted by trbig View Post
        Ben, I know you said no valve cover leak, but that's where most of them will show up if it's leaking on the left side. Especially in that U-shaped area around plug #2. Get a flashlight and look in where the #2 spark plug is and see if it's getting wet in there. It likes to blow through the head, hit the #1 or #2 carb holder, and drip down right onto that top fin of the cylinders where the head meets the cylinders. The way the motor sits, and most lean on sidestand, it'll run down around and drip at the front there looking like a head gasket. BUT... a leaky cam chain tensioner can make it up and through there the same way.

        Poor Randy is shaking his head at what's become of his beauty..
        I know you're joking but I do not appreciate the humor...
        I'll look where you said in the a.m. right now I'm dealing with a sick pet...so that takes precedence...
        1980 XS650G Special-Two
        1993 Honda ST1100

        Comment


        • #19
          Originally posted by trbig View Post
          Ben, I know you said no valve cover leak, but that's where most of them will show up if it's leaking on the left side. Especially in that U-shaped area around plug #2. Get a flashlight and look in where the #2 spark plug is and see if it's getting wet in there. It likes to blow through the head, hit the #1 or #2 carb holder, and drip down right onto that top fin of the cylinders where the head meets the cylinders. The way the motor sits, and most lean on sidestand, it'll run down around and drip at the front there looking like a head gasket. BUT... a leaky cam chain tensioner can make it up and through there the same way.
          well its dry as bone in there...not the valve covers.....


          1980 XS650G Special-Two
          1993 Honda ST1100

          Comment


          • #20
            Paid MLew a visit to help me pin down the source of this leak...the verdict is ...head gasket...
            1980 XS650G Special-Two
            1993 Honda ST1100

            Comment


            • #21
              OK, where is the oil coming from? The only place there is oil that is sealed by the head gasket is in the cam chain tunnel and that isn't under pressure.

              Where from the head gasket is it coming from?
              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


              • #22
                Originally posted by BA80 View Post
                OK, where is the oil coming from? The only place there is oil that is sealed by the head gasket is in the cam chain tunnel and that isn't under pressure.

                Where from the head gasket is it coming from?
                looks to me although Mark didnt say clearly but it seems to be on the backside of the motor under the carbs...BTW we checked all the head bolts and they are in spec...
                Randy had this motor apart in a rebuild about 3 yrs ago...
                Last edited by madmax-im; 04-27-2014, 04:06 PM.
                1980 XS650G Special-Two
                1993 Honda ST1100

                Comment


                • #23
                  The cam chain tunnel is in the center, front and rear. Be sure it isn't just the oil transfer tube copper gasket on the banjo bolt that connects it to the head. That's just above where the head gasket seals the cam chain tunnel. In between #2 and #3 carbs right by where the throttle cable sheath mounts.

                  It's hard to get to and hard to see but try and get in there with a wrench and tighten it. The tube runs up between #3 and #4 carbs and bends over to the center.
                  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


                  • #24
                    Originally posted by BA80 View Post
                    The cam chain tunnel is in the center, front and rear. Be sure it isn't just the oil transfer tube copper gasket on the banjo bolt that connects it to the head. That's just above where the head gasket seals the cam chain tunnel. In between #2 and #3 carbs right by where the throttle cable sheath mounts.

                    It's hard to get to and hard to see but try and get in there with a wrench and tighten it. The tube runs up between #3 and #4 carbs and bends over to the center.
                    Mark said he has the same leak on his bike so he is sure its the head gasket...but I will check it out...he was in there with some mirrors on a telescoping wand so he got a pretty good look back there...
                    1980 XS650G Special-Two
                    1993 Honda ST1100

                    Comment


                    • #25
                      Just trying to save you some time and money. It's free to tighten a bolt.
                      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


                      • #26
                        Originally posted by BA80 View Post
                        Just trying to save you some time and money. It's free to tighten a bolt.
                        Thanks Greg ..it is appreciated...i would really love it to be the culprit...a head gasket job is a major surgery and I wouldn't consider doing that unless the blow by is significant and at this point in time it is not...
                        1980 XS650G Special-Two
                        1993 Honda ST1100

                        Comment


                        • #27
                          I'm sure I've said this before but that's what it was on Doc's bike when we were sure it was a head gasket leak.
                          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


                          • #28
                            Originally posted by BA80 View Post
                            I'm sure I've said this before but that's what it was on Doc's bike when we were sure it was a head gasket leak.
                            I cant tell you how much i hope you're right......I mean those gaskets are what 3 yrs old???
                            1980 XS650G Special-Two
                            1993 Honda ST1100

                            Comment


                            • #29
                              Doesn't add up. For oil to seep from the center tunnel to outboard of cyl #1 it would have to get by cyl #2 AND that head would have to be really loose, which would mean lots of blow-by across cylinders and rough running.

                              From 1000 miles away. I'm going with oil pipe. Even though those crush washers were renewed 3 yrs ago. I HAVE seen ruptured / cracked oil pipes do that.

                              There is also the oil pressure gauge connection to the sender there between the carbs and the head. I put braided Teflon line in there but one of the banjo's could be weeping?

                              It's going to take more than a mirror to figure this out, but there are some ideas from the guy who built this.
                              Former owner, but I have NO PARTS LEFT!

                              Comment


                              • #30
                                well I just tried to look in depth and i still cannot see where any oil has traveled to where i see it leaking...since i dont really know squat about the oil lines and such...theres a 99.9% chance that you get to see it in person in the next 19 days or so...
                                1980 XS650G Special-Two
                                1993 Honda ST1100

                                Comment

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