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  • This doesn’t look good...

    Was riding along when bike lost power. Rear cylinder dead. Got home after work and temped rear exhaust coming out of rear cylinder and reading was very low. Opened her up to see what was up and noticed the intake rocker arm on rear cylinder was not rotating enough to open/close intake valves. Got to lifter and lifter case and found this...

  • #2
    99 Roadstar with a lil over 10k mikes. Transmission recall had not been performed so took it to a local shop to have completed. While in there had them upgrade the oil pump gear per what I read around here. Recent oil change too. Mobil 1 V-twin synthetic.

    Comment


    • #3
      Cam looksnok from that Pic.. Lifter bad. Probably replace both cams and lifters as a set... Odd thing to have happen on a Road Star
      LET'S RIDE

      Comment


    • #4
      Thoughts on the lifter case? Anyone think I could clean that up and reuse? Or does it appear to need to be replaced?

      I saw an article or two on valve lifters from the local auto parts store. Good to run those versus OEM?

      When I look around the net for OEM cams I am seeing around $400 to $500 a set. Yikes! Is there no way to replace just the rear cylinder cam or do they have to be maintained as a set ( not to mix a new one with a "used" one)? Thoughts?

      I am open to all suggestions!

      Comment


      • #5
        Originally posted by Lug Nut View Post
        Odd thing to have happen on a Road Star
        Actually it is common. Old oil or wrong oil for a Roadie will cause this quite easily. I know it has been beaten to death on here, buy using oil without sufficient zddp (zinc) in it wreaks havoc on flat tappets and the flat tappet cams. It's just as simple as that.


        Originally posted by tovarman2 View Post
        Thoughts on the lifter case? Anyone think I could clean that up and reuse? Or does it appear to need to be replaced?

        I saw an article or two on valve lifters from the local auto parts store. Good to run those versus OEM?

        When I look around the net for OEM cams I am seeing around $400 to $500 a set. Yikes! Is there no way to replace just the rear cylinder cam or do they have to be maintained as a set ( not to mix a new one with a "used" one)? Thoughts?

        I am open to all suggestions!

        Have you drained the oil yet and cut open the oil filter to see if there are metal shavings in it? I'd be willing to bet there is metal in the oil and the filter. If so, there are metal shavings throughout the engine and in the oil tank. Not a good situation.

        Comment


        • #6
          I have not. Just discovered issue this morning and am not running bike. I was intending to replace the cams and lifters. Drain oil change filter. Run bike for a bit. Change oil and filter again. Pray.

          Comment


          • #7
            I was interested in others opinions. Own a few motorcycles over the years. Never had anything like this happen with any of my other bikes.

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            • #8
              I bought the bike used. Don’t have much info from PO as he was no longer "available" to ask questions.

              Comment


              • #9
                Two words; Flat tappets. PO probably was using cheap ass oil with low ZDDP content.

                Just an observation and some food for thought.

                There are many blogs out there about flat tappet cams and their appetite for zinc and phosphorus and all of Yamaha’s big pushrod V twins use them.

                https://www.bobistheoilguy.com/forum...e-2016.296170/

                Comment


                • #10
                  Originally posted by Bikerron View Post
                  Two words; Flat tappets. PO probably was using cheap ass oil with low ZDDP content.

                  Just an observation and some food for thought.

                  There are many blogs out there about flat tappet cams and their appetite for zinc and phosphorus.

                  https://www.bobistheoilguy.com/forum...e-2016.296170/
                  I use mobil 1 twin 20w 50 is that good or should I use something different? I dont want this happening to me.

                  Comment


                  • #11
                    It’s what many of us on here use and it’s got the numbers I can appreciate.

                    Comment


                    • #12
                      Originally posted by Bikerron View Post
                      It’s what many of us on here use and it’s got the numbers I can appreciate.

                      Ok just making sure. I made a post about handbags. Not alot of people have chimed in. Any advice you could give. 14 and up bags

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                      • #13
                        Got the cams replaced as well as the lifters. Found a lifter case used on EBay and replaced the gouged up one. Got it all back together and have put about 150 miles on it so far.

                        Comment


                        • Doc_V
                          Doc_V commented
                          Editing a comment
                          Congratz, that's got to feel good.

                        • D-Fresh
                          D-Fresh commented
                          Editing a comment
                          Kudos to you, not a quick or easy fix.

                      • #14
                        I was worried starting it all up the first time!!!

                        The info posted on this site is extremely helpful.

                        I also just added a Barons jet kit and K&N filter. I ran the 170 main and am planning to drop to the 167.5. I think that’s right...or whatever the smaller jet is in the kit. I’ll start there.

                        Anyways rode it today and it did pretty well. Just think it’s a bit rich...

                        Comment


                        • Horsehammerr
                          Horsehammerr commented
                          Editing a comment
                          Rich don't hurt , maybe a mile or two on miles per gallon .

                        • Chromepony
                          Chromepony commented
                          Editing a comment
                          That's right...better to run it a little fat than a little lean.

                      • #15
                        Congrats on the fix up!

                        Comment


                        • #16
                          Amazing... These bikes can go 200k-300k with normal maintenance and no issues... And a bike with only 10k miles wipes cam and lifters (probably due to wrong oil)... Sucks.
                          LET'S RIDE

                          Comment


                          • roadiemort
                            roadiemort commented
                            Editing a comment
                            Yes that and the Dunning Kruger effect.

                        • #17
                          Glad you got it back on the road.
                          Did you by chance check the oil pressure after you put it back together?

                          Comment


                          • #18
                            I did not. Should I? I think I should....

                            start it running and crack open the oil line on left side of bike, right? Oil everywhere = good pressure and just a drip means an issue...if I remember reading correctly. Idling at 850 to 900 RPM...

                            BTW....what is redline for these 1600s? How do you know aside from hooking up an aftermarket tach?

                            Comment


                            • #19
                              Running Kruger. I got it...

                              Comment


                              • #20
                                Dunning. Damn autocorrect

                                Comment


                                • Bikerron
                                  Bikerron commented
                                  Editing a comment
                                  Stock 1600s are rev limited to 4,250, but an ECM from a (‘04-‘07) carbed 1700 will take it to 4,750. Plug n play.

                                  The FI bikes went back to 4,250.

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