Decided to take on the ol' base gasket leak...
Close
    
    
Results 1 to 10 of 10
Like Tree12Likes
  • 1 Post By bcazko
  • 2 Post By YamTW87
  • 1 Post By YamTW87
  • 3 Post By Purple
  • 3 Post By elime
  • 1 Post By RaZed1
  • 1 Post By elime

Thread: Decided to take on the ol' base gasket leak...

  1. #1
    Junior Member bcazko's Avatar
    Join Date
    Jun 2019
    Location
    chicago
    Posts
    11

    Decided to take on the ol' base gasket leak...

    Bought a 2007 with 12k miles and a base gasket leak. After much contemplation, I've decided I'm too broke to go to a mechanic and I've got no choice but to take it head on myself! I've got little to no mechanical experience but I think if I take my time and ask questions when I'm confused, I should be ok. I'll be replacing my stock sprockets with 14/47 and putting in an x-ring chain as well. Is there any other recommended maintenance, or parts to replace while I've got the engine disassembled?

    Thanks guys!
    Fred likes this.

  2. #2
    Senior Member YamTW87's Avatar
    Join Date
    Mar 2017
    Location
    Greece
    Posts
    157
    You can try to retighten the headbolts to specified torque before disassembling.
    I may fix your leak.
    Last edited by YamTW87; 10-26-2019 at 10:15 PM.
    CJ7Pilot and elime like this.
    2007 Suzuki V-Strom 650

  3. #3
    Junior Member bcazko's Avatar
    Join Date
    Jun 2019
    Location
    chicago
    Posts
    11
    Quote Originally Posted by YamTW87 View Post
    You can try to retighten the headbolts to specified torque before disassembling.
    I may fix your leak.
    Do you happen to know the torque specs for the head bolts? also: Is it recommended to back off the bolts before retorquing? Or torque them to spec from where they’re currently sitting. I read you can’t get an accurate torque reading unless u loosen them first, is this true?

  4. Remove Advertisements
    TW200Forum.com
    Advertisements
     

  5. #4
    Senior Member YamTW87's Avatar
    Join Date
    Mar 2017
    Location
    Greece
    Posts
    157
    You are right,back them off first,but just slightly.
    Here are the torque specs.
    cyl.JPG
    Last edited by YamTW87; 10-27-2019 at 09:22 PM.
    Fred likes this.
    2007 Suzuki V-Strom 650

  6. #5
    Junior Member Prairierider's Avatar
    Join Date
    Jul 2017
    Location
    S.E. South Dakota
    Posts
    21
    At 12000 miles you should consider a new cam chain and slipper. (if you take it apart for the gasket)
    1999 TW200, 2001 KAWASAKI KLR650, 1980 HONDA XR200, HONDA1982 XR200 IN CR250 FRAME, HONDA ATC200X, 1975 HONDA CT90

  7. #6
    Junior Member bcazko's Avatar
    Join Date
    Jun 2019
    Location
    chicago
    Posts
    11
    Quote Originally Posted by YamTW87 View Post
    You are right,back them off first,but just slightly.
    Here are the torque specs.
    cyl.JPG
    Thanks a lot!

  8. #7
    Super Moderator Purple's Avatar
    Join Date
    Mar 2015
    Location
    Ynys Môn
    Posts
    4,641
    Back 'em off a bit (diagonaly), then re-torque (again, diagonaly)

    This releases the tension lock between the metals that can give you a false torque reading ....
    jtstdub, YamTW87 and cateyetech like this.
    (Warning - Forum may contain nuts) ...... Hidden Content

    TW200 - 1998 - Japanese import - 7000 miles on the clock - TW225 Special Edition 2007
    - Hidden Content

  9. #8
    Senior Member elime's Avatar
    Join Date
    Jul 2010
    Location
    San Jose, CA
    Posts
    7,001
    If it were me, I would take the bolt completely out and clean the underside of the head of the bolt, the washer, and the top of the head. Lube it, put it back in, and re torque it. I would do it one at a time and when done I would go back and re torque the bolts again. It won't take long.

    When you re torque the bolts, if you see oil squishing out of the base gasket chances are excellent you have solved the leaking problem. If you don't see oil squishing out it still might work, about a 50/50 chance.

    Report back what happens so that we all may learn from your experience.
    admiral, Fred and Scooterbrained like this.
    Long live the internal combustion engine!

  10. #9
    Senior Member RaZed1's Avatar
    Join Date
    Oct 2015
    Posts
    299
    Re-torquing often helps, the root cause of the problem is uneven machining between the case halves. If you remove the jug you'll probably be able to feel a slight ridge where the cases meet. My first TW had a slight leak, I sanded the ridge down when I had the jug off to put a wiseco piston in, along with a new gasket and the problem vanished. My second one did not have this problem, and when I had the jug off the halves lined up almost perfectly. I could feel the very slightest little ridge with my fingernail but it was much smaller than the first one. Seems like mostly luck of the draw, variances in manufacturing, of if your bike was assembled after the friday afternoon sake break at the factory.
    Scooterbrained likes this.

  11. #10
    Senior Member elime's Avatar
    Join Date
    Jul 2010
    Location
    San Jose, CA
    Posts
    7,001
    Any updates?
    Scooterbrained likes this.
    Long live the internal combustion engine!

Sponosred Links

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Tags for this Thread