Hearing your valves going out of specs

Discussion in 'Thumpers' started by meat popsicle, Jul 16, 2004.

  1. meat popsicle

    meat popsicle Ignostic

    Joined:
    Feb 9, 2004
    Oddometer:
    14,552
    Location:
    Circumlocution Office of Little Dorrit
    Recently someone mentioned that some racers had said they could tell by listening to the bike warming up that their valves were going out of specs and needed adjustment.

    If this is true then it would be VERY VERY helpful (I assume) to many people here to try and convey that information. I am posting this in thumpers because I am most interested in thumpers (KTM LC4s to be precise).

    :ear
    #1
  2. creeper

    creeper Still alive...

    Joined:
    Dec 13, 2003
    Oddometer:
    10,718
    Location:
    Puget Sound
    Meat, meat, meat... What the hell are we gona' do with you? Is moto-hypocondria contagious?

    I think you'd have to go ALOT of miles without a valve adjustment before you could "hear" loose rockers...
    #2
  3. meat popsicle

    meat popsicle Ignostic

    Joined:
    Feb 9, 2004
    Oddometer:
    14,552
    Location:
    Circumlocution Office of Little Dorrit
    Its not something I think about every time I start the bike wise guy... :jive

    but in situations where one might push the envelope - it would be great to have a "field" check, to know if trouble is coming. :stoned
    #3
  4. creeper

    creeper Still alive...

    Joined:
    Dec 13, 2003
    Oddometer:
    10,718
    Location:
    Puget Sound
    :nod
    #4
  5. meat popsicle

    meat popsicle Ignostic

    Joined:
    Feb 9, 2004
    Oddometer:
    14,552
    Location:
    Circumlocution Office of Little Dorrit
    that little jive guy cracks me up :D

    BEER FRIDAY! Sup. just brought beers around! :freaky
    #5
  6. Rad

    Rad Done riding

    Joined:
    Sep 24, 2001
    Oddometer:
    12,174
    A noisy valve is a happy valve :nod

    Beware of da quite valve :lol3
    #6
  7. meat popsicle

    meat popsicle Ignostic

    Joined:
    Feb 9, 2004
    Oddometer:
    14,552
    Location:
    Circumlocution Office of Little Dorrit
    Ahhh, our first clue!

    I have heard noisy (bad) valves on cars, kinda unmistakable once you know what you are hearing. Is that what I will hear on the bike when it starts connecting with the seat? When it goes the other way (stays open) will It start to get other symptoms? Maybe like pre-ignition or such?

    Has this been discussed before?
    #7
  8. Mack

    Mack Gone, but never forgotten. RIP, Mack...

    Joined:
    Sep 7, 2002
    Oddometer:
    3,797
    Location:
    Austin, Texas USA Native Oregonian
    Jimmy can sense it, seat of the pants bike response wise, noise was not mentioned, though hard starting was.
    #8
  9. meat popsicle

    meat popsicle Ignostic

    Joined:
    Feb 9, 2004
    Oddometer:
    14,552
    Location:
    Circumlocution Office of Little Dorrit
    Ah ha! It was you Mack! Well, maybe yo mentioned that before. I suppose that seat-o-da-pants response feeling would be difficult to convey in words... (and for a bike-o-chondriac like me it might be really difficult eh creeper)

    What about that hard starting business? Dare I enquire?
    #9
  10. zippy

    zippy Southside of the Sun Supporter

    Joined:
    Dec 16, 2003
    Oddometer:
    2,576
    Location:
    St Pete
    good one. Yes hard starting very good sign it's time for a valve check. Follow the manuals intervals for checks. Now when you run out of adjustment and the valves have recessed into the head that's a distinct sound.
    #10
  11. Jeff620RXC

    Jeff620RXC Been here awhile

    Joined:
    Apr 11, 2004
    Oddometer:
    567
    Location:
    Hutchinson, KS USA
    On the LC4's the valves usually get tighter not looser. Right?
    I've read if they get tighter and tighter they are quiet right up until...it is too late....clunk!
    #11
  12. creeper

    creeper Still alive...

    Joined:
    Dec 13, 2003
    Oddometer:
    10,718
    Location:
    Puget Sound
    Oh... wait... I can hear my right EX. tightening up... and... :eek1 I can hear the left IN. loosening!!! :eek1 :eek1 You know... if you hold the bike up to your ear, you can hear the oce.... Hey, does Austria have an ocean?
    Of course you can only hear this shit when the bike is not running, cause when it is... you couldn't hear a fuckin' thing over all the other normal racket.

    Sorry, this is the funniest unintentionally funny thread in quite awhile.

    Go ahead, call me an asshole, I probably deserve it :bash

    Creep
    #12
  13. meat popsicle

    meat popsicle Ignostic

    Joined:
    Feb 9, 2004
    Oddometer:
    14,552
    Location:
    Circumlocution Office of Little Dorrit
    Why can everyone be almost serious about this but you creeper? :cob

    Just kidding, thanks for the vote of confidence on the LC4, I thought it was more reliable than some here seem to believe. Jebzus, the way some talk about the oil change you think it required splitting the case! Once I saw it :snore no prob. Thanks Tom (Moore and Sons in Santa Cruz)! :thumb

    Seems that Mack da Knife and Jeff420RXC post's seem to agree that there is little blatant warning... so I guess its just something that comes with experience. :augie
    #13
  14. Drif10

    Drif10 Accredited Jackass

    Joined:
    Jun 12, 2003
    Oddometer:
    50,727
    Location:
    Gates of Moscow
    That's because creep was dropped on his head too many times as an adult..
    Practice, practice, practice. Spend a lot of time with a machine, paying critical attention to it in all regimes, and you'll know when it ain't right. For you to be able to develop that rapport, it is essential for it to be properly and accurately tuned first, otherwise you have no accurate baseline from which to reference.

    Used the johnson method for valve adjustments and it worked okay, but it was a pain. Now I'm doing it by feeler, works much better.
    #14
  15. Ostrich

    Ostrich Jaded and Happy

    Joined:
    Jun 23, 2002
    Oddometer:
    8,731
    Location:
    Fresneck or Bust Baby!
    I have to gift to tell, but the catch is: you have to bring your bike to Fresno so I can thrash around on it for an hour. After an hour of riding I should be able to tell. If not, I may have to ride another hour and repeat until I can make a diagnosis. :nod What are friends for? :beer
    #15
  16. Ostrich

    Ostrich Jaded and Happy

    Joined:
    Jun 23, 2002
    Oddometer:
    8,731
    Location:
    Fresneck or Bust Baby!
    Asshole. :1drink Wow, I really do feel better. :nod
    #16
  17. Drif10

    Drif10 Accredited Jackass

    Joined:
    Jun 12, 2003
    Oddometer:
    50,727
    Location:
    Gates of Moscow
    ooohh...can I play?

    Creeeeeeper, you're an asshole.

    :lol3

    I like this game!

    Creeper is an asshole. Extremely assholish. A consummate asshole. Assholio.

    Good game! :thumb

    Next player?
    #17
  18. dagwood

    dagwood Banned

    Joined:
    Aug 25, 2003
    Oddometer:
    35,395
    Location:
    Vancouver, Not! BC...
    Like the Asshole said. How the hell can you hear a valve with all the other racket going on? I get the funniest looks at stop signs with people stairing at my motor like it's gonna blow up.
    Or is it my ass they're stairing at? :huh

    When in doubt? check em. not that big a deal really and the more times you do it the easier it gets. Just get all OCD on it and go to town. :lol3
    #18
  19. creeper

    creeper Still alive...

    Joined:
    Dec 13, 2003
    Oddometer:
    10,718
    Location:
    Puget Sound
    Creeper is not only an asshole but a right wanker, a fucktard, an asshat, and poor excuse for a human being as well.... lets get him! :nod

    Not Creeper... somebody else, but not Creeper... honest
    #19
  20. Drif10

    Drif10 Accredited Jackass

    Joined:
    Jun 12, 2003
    Oddometer:
    50,727
    Location:
    Gates of Moscow
    Got that schizophrenia under control I see, ya creep.
    #20