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Valves nice and bent, just the way I like them... :mad:

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  • #1

    Valves nice and bent, just the way I like them... :mad:

    Well, I left slack between the intake cam sprocket and exhaust cam sprocket, they got out of time and I bent up all my exhaust valves...New heads are in on Thursday.

    For the record, there should be ANY slack between the crank sprocket, the intake sprocket, and the exhaust sprocket, right? Also, I should be pressing in on the guide runner where the CCT is to make sure it doesn't jump a tooth, right?

    Best part is I've done this successfully 2 times before this.





    78 E - 2to1 exhaust, dynatek coils, special headlight [SOLD!]
    79 F - gas tank refurb, headgasket change, straight pipes, late model carbs, virago lowering shocks, special headlight and gauges, TC fuse block, GSXR-1100 carbs (WIP)


    "May my tires not fail me, nor my engine grow cold"
    Tags: None
  • #2
    Wow! and those aren't just bent a little, those are bent pretty good it looks like!
    Nathan
    KD9ARL

    μολὼν λαβέ

    1978 XS1100E
    K&N Filter
    #45 pilot Jet, #137.5 Main Jet
    OEM Exhaust
    ATK Fork Brace
    LED Dash lights
    Ammeter, Oil Pressure, Oil Temp, and Volt Meters
    Green Monster Coils
    SS Brake Lines
    Vision 550 Auto Tensioner

    In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

    Theodore Roosevelt

    Comment

    • #3
      That just sucks! I feel for you, dude.
      Living to EXcess.
      1978 XS1100E Canadian, Cartridge emulators, NOS heavy duty fork springs,
      Showa rear shocks, ACCT, Jardine 4-2 spaghetti pipes.
      1979 XS1100F Canadian, stock exhaust. Top end rebuild in progress.

      Comment

      • #4
        It happens to the worst of us, lol. I definitely learned a lot of lessons since then.
        1979 XS1100F
        2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.

        Comment

        • #5
          I have no idea how 3 out of 4 even got bent. I didn't even turn the crank more than 180 degrees before I felt the binding...I don't know what's wrong with me. For some reason I'm having the hardest time getting the timing right.
          78 E - 2to1 exhaust, dynatek coils, special headlight [SOLD!]
          79 F - gas tank refurb, headgasket change, straight pipes, late model carbs, virago lowering shocks, special headlight and gauges, TC fuse block, GSXR-1100 carbs (WIP)


          "May my tires not fail me, nor my engine grow cold"

          Comment

          • #6
            Been there my self. When I first got my 78E I bent the valves then got a replacement head and promptly bent those valves also. I then decided I needed to read ALL the manual

            Good luck with the replacement (I'm sure you will do better than I did)
            Ty

            78 XS1100E - Now in Minnesota
            80 XS1100LG - The Punisher
            82 XJ1100 - Current project - The Twins
            82 XJ1100 - Wife's Bike - The Twins
            82 XJ1100 - Daughter's Bike
            72 Suzuki TS125 - Daughter's Bike
            72 Yamaha Mini JT2 - Youngest Daughter's bike (She wants a bigger one now)

            Comment

            • #7
              I'm getting even more frightened of switching to an ACCT every time this happens to someone.
              Living to EXcess.
              1978 XS1100E Canadian, Cartridge emulators, NOS heavy duty fork springs,
              Showa rear shocks, ACCT, Jardine 4-2 spaghetti pipes.
              1979 XS1100F Canadian, stock exhaust. Top end rebuild in progress.

              Comment

              • #8
                Originally posted by Orange4 View Post
                I'm getting even more frightened of switching to an ACCT every time this happens to someone.
                I'm hoping one of the gurus will speak up and say something about the tension. It seems like there shouldn't be any slack between the intake and exhaust when you install the CCT but the manual has no mention of it.
                78 E - 2to1 exhaust, dynatek coils, special headlight [SOLD!]
                79 F - gas tank refurb, headgasket change, straight pipes, late model carbs, virago lowering shocks, special headlight and gauges, TC fuse block, GSXR-1100 carbs (WIP)


                "May my tires not fail me, nor my engine grow cold"

                Comment

                • #9
                  Originally posted by D0wn5h1ft View Post
                  I'm hoping one of the gurus will speak up and say something about the tension. It seems like there shouldn't be any slack between the intake and exhaust when you install the CCT but the manual has no mention of it.
                  The only slack should be on the front side of the chain so that the tensioner can can take up the slack when it is doing its job.
                  Nathan
                  KD9ARL

                  μολὼν λαβέ

                  1978 XS1100E
                  K&N Filter
                  #45 pilot Jet, #137.5 Main Jet
                  OEM Exhaust
                  ATK Fork Brace
                  LED Dash lights
                  Ammeter, Oil Pressure, Oil Temp, and Volt Meters
                  Green Monster Coils
                  SS Brake Lines
                  Vision 550 Auto Tensioner

                  In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

                  Theodore Roosevelt

                  Comment

                  • #10
                    Originally posted by D0wn5h1ft View Post
                    I'm hoping one of the gurus will speak up and say something about the tension. It seems like there shouldn't be any slack between the intake and exhaust when you install the CCT but the manual has no mention of it.
                    No way! Speak up about the right way to do it, jinx myself and bend MY valves?!

                    What were you trying to do, just check/reset the stock tensioner or add an automatic tensioner?

                    If you did all of the things you mentioned and the cam chain still fell off or skipped teeth you may need a new cam chain along with the new valves.

                    .
                    -- Scott
                    _____
                    ♬
                    2004 ST1300A: No name... yet
                    1982 XJ1100J: "Baby" SS Brakes, '850 FD, ACCT
                    1980 XS1100G: "Columbo" SS Brakes, '850 FD, ACCT
                    1979 XS1100SF: "Bush" W.I.P.
                    1979 XS1100F: parts
                    2018 Heritage Softail Classic 117 FLHCS SE: "Nanuk" It's DEAD, it's not just resting. It is an EX cycle.
                    ♬

                    Comment

                    • #11
                      What's weird Gabe is that I was REALLY STUPID when I bent my valves, and even ran the engine knowing something was amiss (I was very ignorant regarding the mechanicals of the bike then), and my valves were nowhere near as bent as your's.

                      Orange4- The right way is to not do anything without knowing exactly what's going on, or what ur getting urself into. I felt confident on the procedure and went ahead with it. However, when I hit a certain point (dots not aligning), I was ignorant on how to proceed. Instead of stopping and asking for help and waiting for a response as Rasputin and Greg, and a few others advised, I instead went ahead and did the wrong thing resulting in four bent intake valves.

                      When I tried it again, I had a better understanding of what exactly was going on, and all went smooth for the most part (with the exception of my timing bolt shhoting through my ignition cover, lol). Learning lesson was patience pays off.
                      1979 XS1100F
                      2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.

                      Comment

                      • #12
                        Also, doing the ACCT mod with the valve cover off is a must. Put on C, swap-out, swap-in, hand-rotate three or four times, and all should be well.
                        1979 XS1100F
                        2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.

                        Comment

                        • #13
                          Originally posted by IanDMacDonald View Post
                          What's weird Gabe is that I was REALLY STUPID when I bent my valves, and even ran the engine knowing something was amiss (I was very ignorant regarding the mechanicals of the bike then), and my valves were nowhere near as bent as your's.

                          Orange4- The right way is to not do anything without knowing exactly what's going on, or what ur getting urself into. I felt confident on the procedure and went ahead with it. However, when I hit a certain point (dots not aligning), I was ignorant on how to proceed. Instead of stopping and asking for help and waiting for a response as Rasputin and Greg, and a few others advised, I instead went ahead and did the wrong thing resulting in four bent intake valves.

                          When I tried it again, I had a better understanding of what exactly was going on, and all went smooth for the most part (with the exception of my timing bolt shhoting through my ignition cover, lol). Learning lesson was patience pays off.
                          That's what happens when the exhaust sprocket jumps a few teeth. The only two situations where bent valves SHOULD occur from slight timing deviations is either from intakes opening too soon or exhausts closing too late (what happened to me). Correct me if I'm wrong.

                          Ian made a good point when we were texting earlier. The manual says to install the cam chain guide AFTER you install the CCT but in reality it should be placed in there BEFORE to prevent slack from being artificially put in the cam
                          chain.
                          Last edited by D0wn5h1ft; 06-03-2014, 02:20 PM.
                          78 E - 2to1 exhaust, dynatek coils, special headlight [SOLD!]
                          79 F - gas tank refurb, headgasket change, straight pipes, late model carbs, virago lowering shocks, special headlight and gauges, TC fuse block, GSXR-1100 carbs (WIP)


                          "May my tires not fail me, nor my engine grow cold"

                          Comment

                          • #14
                            Well, if I remember correctly, it's hard to install the bridge after you put the chain back on the sprockets and bolt them down. I believe Don made the point on that, which I followed.
                            1979 XS1100F
                            2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.

                            Comment

                            • #15
                              The good side...........least got a good plug-burn on that first cyl. shown.
                              81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

                              Comment

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