85 V-Max sounds- not the good kind...

Discussion in 'Motor' started by Firerider, Aug 26, 2017.

Help Support VMAX Motorcycle Forum by donating:

  1. Aug 26, 2017 #1

    Firerider

    Firerider

    Firerider

    Active Member

    Joined:
    Apr 23, 2011
    Messages:
    33
    Likes Received:
    0
    Location:
    nanaimo
    Started hearing a metallic rubbing sound from engine. Like something rubbing against a case cover or ?. Thought it may be the water pump but the noise is coming from the other side. Does not knock when started but after running a few minutes starts low and gets louder as it runs. If I blip the throttle it goes away and then returns after a couple of seconds. With my stethoscope the only place I can hear it is on the left front exhaust pipe. Scraping sound with ticks about every second. Any ideas what this may be.. Would valve shims make such a sound?
     
  2. Aug 26, 2017 #2

    Traumahawk

    Traumahawk

    Traumahawk

    Well-Known Member

    Joined:
    Dec 12, 2011
    Messages:
    7,607
    Likes Received:
    0
    Location:
    Lawton, OK
    Can you post a video?
     
  3. Aug 26, 2017 #3

    jdeitz1979

    jdeitz1979

    jdeitz1979

    Well-Known Member

    Joined:
    Apr 22, 2015
    Messages:
    791
    Likes Received:
    0
    Location:
    Auburn
    I doubt a valve shim would be heard like you're describing. I'd guess if on that side of the engine, maybe a bolt from the one way bearing came out, but like trauma said, post a video


    Sent from my iPhone using Tapatalk
     
  4. Aug 26, 2017 #4

    Bill Seward

    Bill Seward

    Bill Seward

    Well-Known Member

    Joined:
    Mar 24, 2007
    Messages:
    2,602
    Likes Received:
    3
    Location:
    Holland NY
    Give the exhaust header a tap with a hammer. Sometimes the inner pipe comes loose after the welds corrode. Sounds all kind of weird. If it's loose, you'll know it. My 85 did it after about 60,000 miles. I had a friends bike do exactly the same thing.

    I fixed the rattle on both bikes by giving the pipe a good whack with a ball pein hammer, to dent the outer pipe enough to pinch the inner pipe and stop it from rattling.

    A while later, I replaced the offending header pipe.
     
  5. Aug 26, 2017 #5

    jdeitz1979

    jdeitz1979

    jdeitz1979

    Well-Known Member

    Joined:
    Apr 22, 2015
    Messages:
    791
    Likes Received:
    0
    Location:
    Auburn


    I forgot all about that. I remember reading that once. I often forge the tubes are double walled


    Sent from my iPhone using Tapatalk
     
  6. Aug 27, 2017 #6

    Firerider

    Firerider

    Firerider

    Active Member

    Joined:
    Apr 23, 2011
    Messages:
    33
    Likes Received:
    0
    Location:
    nanaimo
    Thanks. I'll check the pipe theory tomorrow and see if I can figure out the video thing as well.
     
  7. Aug 27, 2017 #7

    Fire-medic

    Fire-medic

    Fire-medic

    Well-Known Member

    Joined:
    Mar 25, 2011
    Messages:
    8,664
    Likes Received:
    14
    Location:
    Miami Florida
    So another Canadian (British Columbia) rider, eh? Welcome. You'll need to post the video to a web-sharing site, I recommend photobucket...:rofl_200:
    Not really! Anyone else but.

    I'll have a local IPA, whose do you recommend? [​IMG][​IMG]

    Is your VIN listed in the 1985 registry? If not, what are the last 4 numbers of the VIN? Does the steering head decal say the bike is for the USA market?


     
  8. Aug 27, 2017 #8

    Firerider

    Firerider

    Firerider

    Active Member

    Joined:
    Apr 23, 2011
    Messages:
    33
    Likes Received:
    0
    Location:
    nanaimo
    The bike is listed in the site registry and is an early (0339) number. Don't see anything regarding for USA market on the decal but it does have a small round CANADA TRASNPORT decal above the steering head decal.
     
  9. Mar 12, 2018 #9

    Firerider

    Firerider

    Firerider

    Active Member

    Joined:
    Apr 23, 2011
    Messages:
    33
    Likes Received:
    0
    Location:
    nanaimo
    Thanks Bill. I pulled the header pipe off and it is cracked about 1-2 inches down the inner pipe. I'll be looking for a replacement header pipe. I was thinking of using JB Weld to temporarily patch it and see if the noise goes away. Thanks again...
     
  10. Mar 16, 2018 #10

    ash chewy

    ash chewy

    ash chewy

    New Member

    Joined:
    Mar 16, 2018
    Messages:
    1
    Likes Received:
    0
    Location:
    lake wales
    Hello all. I'm brand new to this forum. Looking forward to learning from everyone's expertise. My story is 2 weeks ago I purchased a 98 vmax in extremely good condition cosmetically. only 5700 miles. Owner really took car of it. Problem was the engine was locked seized. I have never worked on a motorcycle but I have always been the guy who fixes everything :punk: It has taken me 3 days but I now have the case opened. 1 piston bearing on the crank has worn a descent size grove in the crank. that piston is broken and the rod was bent 180 degrees. Both cylinder sleeves took all the damage and destroyed. Some impact to the case between cylinders but that damage shouldn't affect anything. Should I buy another case or repair this one? I'm assuming the sleeves can be replace and either repair the crank of swap it out. If I have put this in the wrong thread it's because I just join and can't start a new thread yet....I think

    thanks all:biglaugh:
     
  11. Mar 16, 2018 #11

    Fire-medic

    Fire-medic

    Fire-medic

    Well-Known Member

    Joined:
    Mar 25, 2011
    Messages:
    8,664
    Likes Received:
    14
    Location:
    Miami Florida
    It's junk, buy a used one, there are guys here who will have them.
     
  12. Mar 16, 2018 #12

    vwaxxed

    vwaxxed

    vwaxxed

    Well-Known Member

    Joined:
    Aug 3, 2016
    Messages:
    76
    Likes Received:
    0
    Location:
    Wichita, KS

    Yep, it's junk. I'd just buy a known good used one. Sean has a good runner that I pulled from an 85 for him that I believe was priced pretty reasonably and he can ship it to ya.


    Shoot him an email at one2dmax@aol.com
     
  13. Mar 16, 2018 #13

    D-Max2012

    D-Max2012

    D-Max2012

    Well-Known Member

    Joined:
    Oct 25, 2012
    Messages:
    1,185
    Likes Received:
    0
    Location:
    NJ
    Hello, Chewy Welcome to the forum.

    Just a little heads up.
    You're right. You might want to open your own thread about your issue.
    If you post your issue on another persons thread, you may not get answered. Not because no one cares, but it's difficult to answer multiple questions on a single subject header, like this one is called "85-Vmax Sounds- not the good kind".
    That's basically called Hijacking someone else's thread, :)
    Choose Home, New Topic, and enter the title, and description of the issue..

    Again, Welcome aboard..

    Good luck with that problem.
     

Share This Page

arrow_white