excessive clacking/ticking

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  • bo-vice
    Member
    • Apr 2010
    • 44
    #1

    excessive clacking/ticking

    i know m20's are ticky bastards butttt.... this seems a bit much.

    I CHECKED THE VALVE CLEARANCES and they all seem exactly to spec. Car isnt blowing any smoke, and no check engine light.. what else would be causing this racket?

    heres a close up..

    https://www.youtube.com/watch?v=uesNXuM4acQ


    and here's about 10 feet away..sounding like a WW2 jeep

    https://www.youtube.com/watch?v=YtQrvcB2pJY


    what should i look into first??

    thanks
    Tags: None
    • AndrewBird
      The Mad Scientist
      • Oct 2003
      • 11892
      #2
      Perhaps a crack in the factory exhaust manifolds? Exhaust leaks will often sound very clackety.

      What did you set the valve clearances to? How did you set them?

        Comment

        • e30davie
          E30 Mastermind
          • Apr 2016
          • 1788
          #3
          What did you set your valve clearances too? and what is your method?

          I found the m20 clearances a pain to adjust compared to other engines. took me quite a few goes to get the hang of it. Very easy to think you have it right, then you tighten it up and its too damn loose when you check it again.

            Comment

            • MrBurgundy
              R3V Elite
              • Mar 2012
              • 5294
              #4
              Did you use the spring tool when you adjusted the clearance?



              Sent from my iPhone using Tapatalk
              Current Collection: 1990 325is // 1987 325i Vert // 2003 525i 5spd // 1985 380SL // 1992 Ranger 5spd // 2005 Avalanche // 2024 Honda Grom SP // 2024 Yamaha XSR700 // 2024 Jeep Gladiator Rubicon

                Comment

                • e30davie
                  E30 Mastermind
                  • Apr 2016
                  • 1788
                  #5
                  this thing?

                  http://www.pelicanparts.com/More_Info/TOL-3013.htm

                  I never heard of it before googling just then.

                  that thing worth while? wonder if its any different to just attaching a spring on the end of an allen key.

                    Comment

                    • Blach178
                      Noobie
                      • Jan 2017
                      • 5
                      #6
                      I would take a look on your rockers. and adjust the valves one more time.
                      remember to adjust on valve stem.

                      ive ones had a friend sounding like that. Rockerarm on cyl 6 on exhaust snapped.
                      Last edited by Blach178; 04-21-2017, 08:13 AM.
                      Don't hang with your head, if you stand in a pile of shit :neutral:

                        Comment

                        • digger
                          R3V Elite
                          • Nov 2005
                          • 5912
                          #7
                          almost seems like the frequency is too low to be valves, sounds like something happening once per rpm like a fan hitting the shroud etc hopefully not something worse
                          89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

                          new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

                            Comment

                            • jeffnhiscars
                              R3V OG
                              • Jun 2011
                              • 6010
                              #8
                              Anyone else thinking wrist pin or piston slap ?
                              Seat Shocks....I have passed the baton to John Christy from Ninestitch. Email John or Garrett at ninestitch1@gmail.com

                              https://www.r3vlimited.com/board/sho...86#post4944786
                              Alice the Time Capsule
                              http://www.r3vlimited.com/board/showthread.php?t=360504
                              87 Zinno Cabrio barn find 98k and still smells like a barn. Build thread http://www.r3vlimited.com/board/show...20#post3455220

                                Comment

                                • TobyB
                                  R3V Elite
                                  • Oct 2011
                                  • 5163
                                  #9
                                  I was thinking Cummins....

                                  Yeah, that ain't right. All I got is to try the mechanic's stethoscope,
                                  and see if you can figure out where it's coming from.

                                  Sticking valve?
                                  It doesn't get nastier with a throttle snap- open, so it might not
                                  be piston or rod... but...

                                  It sounds like the land cruiser after it wiped a cam lobe-
                                  but that's a cam-in-block engine....

                                  t
                                  now, sometimes I just mess with people. It's more entertaining that way. george graves

                                    Comment

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