Page 1 of 3 1 2 3 LastLast
Results 1 to 10 of 28

Thread: SHO Head bolts

  1. #1
    SHOBiz's Avatar
    Join Date
    Jul 2008
    Location
    Wylie, Texas
    Posts
    3,577

    SHO Head bolts

    Can they be reused?
    The manual says no reuse, but it has been wrong in the past.
    They are about $10 a pop.


  2. #2
    JKR1300's Avatar
    Join Date
    Jan 2006
    Location
    St Louis & 6mm LotO
    Posts
    497
    +1
    6
    I'm surprised it says you can't reuse them. Every watercraft that I've worked on the bolts were reusable. I've only worked on 2 strokes though

  3. #3
    THE PLATE MAN JIM'S PERFORMANCE's Avatar
    Join Date
    Nov 2005
    Posts
    6,194
    +1
    536
    Quote Originally Posted by SHOBiz View Post
    Can they be reused?
    The manual says no reuse, but it has been wrong in the past.
    They are about $10 a pop.
    If they are stretch to yield bolts then you can not reuse them.

  4. #4
    SHOBiz's Avatar
    Join Date
    Jul 2008
    Location
    Wylie, Texas
    Posts
    3,577
    That's what I was thinking, stretch... I ordered some anyway. Just a holdup now...

  5. #5
    It's not the destination, it's the journey!! Rip'nTear SHO's Avatar
    Join Date
    Apr 2008
    Location
    Ft. Lauderdale
    Posts
    4,573
    Why get new head bolts when you can slap a Cylinder Head Stud Kit on there? Especially with the resources you have and the power you obviously like to make, you'll get better fatigue strength, better alignment, and more accurate tightening and clamping force for improved head gasket life, and less 'block-distortion' after the head is torqued down..

    That's why motors r bored and decked with this special deck plate in place (this is Riva's custom-made plate for the SHO). The plate simulates the 'pulling' forces of the tightened head sitting on top......then when the block is bored and honed, these other forces that can distort bores of the block are taken into account and compensated for....
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	DSC00859.JPG 
Views:	48 
Size:	1.31 MB 
ID:	176883   Click image for larger version. 

Name:	DSC00860.JPG 
Views:	51 
Size:	1.31 MB 
ID:	176884   Click image for larger version. 

Name:	DSC00865.JPG 
Views:	46 
Size:	1.31 MB 
ID:	176885  

  6. #6
    SHOBiz's Avatar
    Join Date
    Jul 2008
    Location
    Wylie, Texas
    Posts
    3,577
    That's the next stage about this time in 2011
    That's when the insides get replaced.

    BTW, were you ever able to get any $ numbers for doing the engine work?

  7. #7
    Take the time to smile sirbreaksalot's Avatar
    Join Date
    Jun 2007
    Location
    Brisvegas
    Posts
    4,158
    +1
    600
    Quote Originally Posted by Rip'nTear SHO View Post
    Why get new head bolts when you can slap a Cylinder Head Stud Kit on there? Especially with the resources you have and the power you obviously like to make, you'll get better fatigue strength, better alignment, and more accurate tightening and clamping force for improved head gasket life, and less 'block-distortion' after the head is torqued down..

    That's why motors r bored and decked with this special deck plate in place (this is Riva's custom-made plate for the SHO). The plate simulates the 'pulling' forces of the tightened head sitting on top......then when the block is bored and honed, these other forces that can distort bores of the block are taken into account and compensated for....
    We call it TORQUE PLATE bore and hone sprocess
    ( over here in OZZY land)

  8. #8
    I wanna go fast perk_1405's Avatar
    Join Date
    Nov 2009
    Location
    winnabow, nc
    Posts
    202
    Quote Originally Posted by Rip'nTear SHO View Post
    Why get new head bolts when you can slap a Cylinder Head Stud Kit on there? Especially with the resources you have and the power you obviously like to make, you'll get better fatigue strength, better alignment, and more accurate tightening and clamping force for improved head gasket life, and less 'block-distortion' after the head is torqued down..

    That's why motors r bored and decked with this special deck plate in place (this is Riva's custom-made plate for the SHO). The plate simulates the 'pulling' forces of the tightened head sitting on top......then when the block is bored and honed, these other forces that can distort bores of the block are taken into account and compensated for....

    all quality machine shops use this method... plate honing

  9. #9
    txgp1300r's Avatar
    Join Date
    Apr 2006
    Location
    Dallas , Texas
    Posts
    3,382
    +1
    165
    Remember the old dotsun cars/trucks , they had one time use only head bolts..out of curiosity when you get your new bolts measure them with micrometer and see if they are the same length as old ones.

  10. #10
    It's not the destination, it's the journey!! Rip'nTear SHO's Avatar
    Join Date
    Apr 2008
    Location
    Ft. Lauderdale
    Posts
    4,573
    Quote Originally Posted by perk_1405 View Post
    all quality machine shops use this method... plate honing
    yip.....

    It's always good to understand the rationale why......

Page 1 of 3 1 2 3 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. 10 TIPS ON TIGHTENING HEAD BOLTS!!!
    By RX951 in forum Yamaha How To & FAQs
    Replies: 13
    Last Post: 12-05-2008, 06:43 PM
  2. Head bolt length after head is shaved???
    By jgustman in forum Yamaha PWC Performance (2-stroke)
    Replies: 23
    Last Post: 06-11-2008, 10:03 AM
  3. head bolt torque specs
    By DaGoblinEatR in forum Yamaha PWC Performance (2-stroke)
    Replies: 2
    Last Post: 10-21-2006, 11:43 PM
  4. Head Bolts
    By JKR1300 in forum Yamaha PWC Performance (2-stroke)
    Replies: 2
    Last Post: 10-20-2006, 03:34 PM
  5. stock head bolts
    By titi0314 in forum Yamaha PWC Performance (2-stroke)
    Replies: 4
    Last Post: 04-29-2006, 03:46 PM

Posting Permissions

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