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Did some repairs...Down to 4 problems... I think

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  • #16
    Did some repairs...Down to 4 problems... I think

    found 3 of the pickup coil wires in need of repair... soldered...

    HELPED A LOT!!!!

    also changed plugs...snipped the ends of coil wires...die electric greased connectors at both ends or NGK 90' at plugs...

    Changed oil and filter, Rotella 15w40

    snipped fuse holder clamps off in favor of in line holders, had a few on hand, plan to update the fuse box later, want to get running correctly first

    last ride had a problem with an exhaust pipe falling off, bungee cord and guy wire did the trick for the moment, will be putting on the Harley MUFFLERS this week
    and also low battery, I had the charger hooked up all week,

    NOW I have 4 problems I think...

    #1. lower end hesitation around 2k rpm, mostly under light accel
    #2. High end, FALLOUT. won't really let me go over 5500 rpm
    #3. Might be a charging issue, headlight dims when brake lights up, also if using highbeam turn signals won't blink
    #4 WICKED WICKED front end BOUNCE above 70 mph

    Will say that the power, is much better. Pretty smooth in 3rd & 4th gear all the way from 2000 to 5000 - 5500 rpm
    Smooth @ 30 - 35 mph in 5th gear
    I did manage to reach almost 80 mph after a little coaxing and a lot of highway (approx 2 miles) WOW that front end NEEDS ATTENTION, also later

    I'd better explain the hesitation better, under descent acceleration it's kinda sluggish...but...if I ease back on throttle, and ease back into it...and then get after the throttle... all I'll say is, HOLD ON! SHE GOES!

    Not planning on any adjustments until after I see how she runs after the mufflers are installed. I know that will bring my back pressure back in specs, and make tuning ALOT easier.

    But KINDA stumped
    1980 XS11 Special aka The Monster
    "My life used to be a Soap Opera, until I realized something, I own the network."
    My Photo Bucket

    Comment


    • #17
      I tried to scan some of your earlier posts to see just what work you've already done.
      I seem to recall that you have a new battery, so you'll definately need to check charging.
      if the bike sat for a while, tires may have flat spots, hence the bounce.
      Hard to diagnose the engine probs till the exhaust is fixed.
      "Damn it Jim, I'm a doctor, not a mechanic!' ('Bones' McCoy)

      Comment


      • #18
        Yeah, you might as well wait until your exhaust system is modified. Check the header under heat shield (by the pegs) for cracks. 5th gear at 35mph is about 2300 rpms or so. If it is smooth I guess your pilot circuits are clear. The experiences that I have had, if the bike gags when the throttle is turned quickly, but excelerates well when eased into the throttle, it may be too rich. Alternatively, if the bike makes does not gag but does not excelerate well when the throttle is turned quickly, it may be too lean.
        Skids (Sid Hansen)

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

        Comment


        • #19
          Hey Renegade,

          I merged your other thread that had most of the history of what you've done with the bike, so that folks can better follow what you've done, as well as what has been suggested, etc.! It would be best to keep replying in THIS THREAD for continuity of diagnosis and treatment!

          After reading your previous notes, I noted about the POD filters that you had initially installed. Then you fixed the pickup coils, have rigged some mufflers, but it still falls at 5K rpm!

          Have you seen the threads about the pods? Some of them have a prominent lip on the mounts that can obstruct the airflow at the carb inlets, and cause Xsive richness, or the vacuum slides not being able to rise properly, etc.! You can do a quick test and remove them for a quick run to see if that helps the rpms get up over the 5-6k barrier.

          IF so...then you'll either need to get some other pods, or do the LOWES velocity stack mod I posted about, or a variation using parts from the old air box IF you still have it? Let us know what you find!
          T.C.
          T. C. Gresham
          81SH "Godzilla" . . .1179cc super-rat.
          79SF "The Teacher" . . .basket case!
          History shows again and again,
          How nature points out the folly of men!

          Comment


          • #20
            Okay, here are a couple of threads with photos on pod filters, velocity stacks, etc.!

            UNIPOD filters and velocity stacks from OEM box .

            Discussion about Cone Pod filters and LOWES velocity stack fix .

            T.C.
            T. C. Gresham
            81SH "Godzilla" . . .1179cc super-rat.
            79SF "The Teacher" . . .basket case!
            History shows again and again,
            How nature points out the folly of men!

            Comment


            • #21
              more info

              I did see the pod air filter problem....took the filter off the mount, leaving it on the carb, yes only 1 carb, didnt seems to interfere, but I'll take them all off today, just to make sure

              I should say the bike will go over 5-6k rpm sitting on the stand

              starting to think I have a slide problem but...not sure

              I think I may also have a vacuum leak some where... kinda hard to hear with the helmet on and the loud exhaust not to mention the wind, it kinda sounds like a tiny whistle while gaining speed.

              I will bet I'll be able to hear it better after the mufflers are on.

              also 3rd gear full throttle range is pretty good,

              haven't really tried 4th or 5th full range except on the highway, but that BOUNCE kinda worries me, it doesn't start til around 65, but gets WORSE above 70, made me forget how the motor was running!!!!!!!!

              Can't tell you all, how much you've helped!
              MANY THANKS, John

              Also, NO I don't have the stock airbox, the PO had removed it in favor of some UGLY black foam pods
              Last edited by renegade_xs11g; 06-24-2007, 12:47 PM.
              1980 XS11 Special aka The Monster
              "My life used to be a Soap Opera, until I realized something, I own the network."
              My Photo Bucket

              Comment


              • #22
                Well, I took the air filters off

                In 1 word, well maybe 2, HOLY SH*T.

                we're on to something, I had to force myself to let go of the throttle! I'm STILL SMILING

                and that was a 40 mile trip in the car (dropped the monster off a my boss's shop for theexhaust work), and taking down 60 feet of fence to widen my driveway, dinner and a shower, STILL CAN'T STOP SMILING

                3rd gear, 7500 rpm,
                the gauge next to it was a blurr, I think it read 70 plus.

                but now the lower end is suffering, WHAT THE HECK?
                1980 XS11 Special aka The Monster
                "My life used to be a Soap Opera, until I realized something, I own the network."
                My Photo Bucket

                Comment


                • #23
                  Re: Well, I took the air filters off

                  Originally posted by renegade_xs11g

                  but now the lower end is suffering, WHAT THE HECK?
                  Lack of mufflers/back pressure, and really feeling the affects of the air flow=lean! You could try turning the pilot screws out a 1/2 turn each, but you'll probably need to go to some larger main jets anyways if you haven't already done so! Glad you found the filter obstruction problem was the cause of your limited rpms!
                  T.C.
                  T. C. Gresham
                  81SH "Godzilla" . . .1179cc super-rat.
                  79SF "The Teacher" . . .basket case!
                  History shows again and again,
                  How nature points out the folly of men!

                  Comment


                  • #24
                    Here we go again, more questions.

                    mufflers have been installed. I put the pods back on for the 40 mile trip home. stopped abour 20 miles out and took just the filters off, (leaving the rubber on the carb), see pics,



                    I looked close, doesn't seem to be a restriction



                    Still having acceleration issues. As I mentioned earlier, I can hear a vacuum leak, (wow, this thing is quiet now, much easier to hear)
                    best described as a little chirping, kinda like a grasshopper.

                    Also, sluggish, (imagine a 4 bbl ROCHESTER carb on a V-8) sounds a little boggy, and like it needs an accelerator pump,

                    No more firing issue, definetly a carb thing,

                    Ya know I do believe I'm taming this wild beast

                    on more pic, these are the pods
                    1980 XS11 Special aka The Monster
                    "My life used to be a Soap Opera, until I realized something, I own the network."
                    My Photo Bucket

                    Comment


                    • #25
                      Try one more time without the rubber on the carbs. Looking at the pics, I see a problem when the pods are installed. You can try and move them "back" just a little on the carb, and see if it helps.
                      The rest WILL be carb tuning. Play with your jets, and the afterburner WILL light up!!
                      Ray Matteis
                      KE6NHG
                      XS1100 E '78 (winter project)
                      XS1100 SF Bob Jones worked on it!

                      Comment


                      • #26
                        forgot 1 thing

                        it runs best around 4K RPM, and the HOLD ON factor is AWOL

                        Thanks for the advise diverray, I'll try that.

                        I don't see the problem, but wouldn't be suprised, (blind in 1 eye, can't see with the other)
                        1980 XS11 Special aka The Monster
                        "My life used to be a Soap Opera, until I realized something, I own the network."
                        My Photo Bucket

                        Comment


                        • #27
                          The air inlet port for the vacuum diaphrams are mostly blocked off from what I can see in the pics. That would be the curved port on the top of the carb inlet.

                          Comment


                          • #28
                            Ok, I see what your eyeball'n but the filter rubber is at least 1/4 inch longer than the end of the carb body,

                            I need more practice with the digital camera, sorry!

                            New update tho, had it running I can see that #1 diaphram is lagging behind, and drops instantly when throttle is released

                            gonna take the carbs off again, getting pretty good at it,
                            gotta see what the he** is go'in on!
                            went shopping and finally found a can of plasti-dip, it's YELLOW, What is THAT gonna look like on the carb holders,
                            LOL I may take pictures
                            Last edited by renegade_xs11g; 06-30-2007, 06:18 PM.
                            1980 XS11 Special aka The Monster
                            "My life used to be a Soap Opera, until I realized something, I own the network."
                            My Photo Bucket

                            Comment


                            • #29
                              Doubting Thomas!

                              Hey Ray and John,

                              Renegade DID remove them completely before upon my suggestion, and he DID get the afterburner affect he was looking for. But then he's put the filter mounts back on!

                              Disbeliever!! If thy pod filters offend thee, then pluck them and cast them out! Or do like we showed, put some form of velocity stack between the mounts and the carbs, and you'll get your arm jerk back!
                              T.C.
                              T. C. Gresham
                              81SH "Godzilla" . . .1179cc super-rat.
                              79SF "The Teacher" . . .basket case!
                              History shows again and again,
                              How nature points out the folly of men!

                              Comment


                              • #30
                                ok here's the sequence of events...

                                last saturday I managed a ride after repairing the pickup wires the weekend before last,
                                Sunday I took the filter off, all of them and the mounts too,
                                ARM JERK, AFTERBURNER, whatever ya call it was back
                                all of the above was done before muffler intalll
                                left bike at the boss' shop all week
                                The mufflers were installed THIS morning, along with the filters, on the way home I took the filters only off, not the rubbers,
                                afterburner won't light, I HAVEN'T tried no rubbers yet
                                1980 XS11 Special aka The Monster
                                "My life used to be a Soap Opera, until I realized something, I own the network."
                                My Photo Bucket

                                Comment

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