Results 1 to 14 of 14

Thread: eyebolts for seatbolts in stock mount points?

  1. #1
    Join Date
    Feb 2003
    Posts
    1,106

    Default

    i am debating getting eyebolts and snap-in's for the lap portion of belts.

    did some googling for 12mm and fine thread 1.25 pitch and not having much luck.

    should i make some by turning down a larger SAE and adding the threads or should i just punt on using the stock mount points?

    the stock mount points look stronger than a typical eyebolt with a larger "fender" washer.

    tia, tom
    1985 CRX Si competed in Solo II: AS, CS, DS, GS
    1986 CRX Si competed in: SCCA Solo II CSP, SCCA ITA, SCCA ITB, NASA H5
    1988 CRX Si competed in ITA & STL

  2. #2
    Join Date
    Dec 2001
    Location
    St. Louis, MO
    Posts
    1,215

    Default

    Try a 7/16 20 and see what happens...

    The stock mounting location may "look stronger" but be sure that they're in the proper spot in relation to your seat. Typically they become too far back and too high once a race seat goes in.

    Punt the washers in the kits and break out the 12ga or 1/8" plate and make some real "washers"
    Scott Rhea
    Izzy's Custom Cages
    It's not what you build... It's how you build it
    Performance Driven LLC
    Neon Racing Springs

  3. #3
    Join Date
    May 2005
    Location
    Staying off the walls
    Posts
    1,049

    Default

    Good luck finding the M12 x 1.25 as just trying to find socket heads fasteners in fine thread can be a bit challenging over here.

    Try Fastenal and you might luck out.

    I'm usinig my stock mounts and yes they are a bit back there but at 6'2" in an RX-7 so am I.


    Tom Sprecher

  4. #4
    Join Date
    May 2006
    Location
    Springdale, AR
    Posts
    112

    Default

    Drill the hole out to 1/2", stick the eye bolt thru and put a LARGE washer and nut on the other side. "So simple a cave man could do it"

  5. #5
    Join Date
    May 2001
    Location
    IT.com "First Loser" Greensboro, NC USA
    Posts
    8,607

    Default

    Many "metric" cars use the 7/16 NF thread on seatbelt bolts. I'd check and make sure that doesn't work before getting too carried away.

    K

  6. #6
    Join Date
    Jan 2003
    Location
    Los Lunas, NM, USA
    Posts
    682

    Default

    Many "metric" cars use the 7/16 NF thread on seatbelt bolts. I'd check and make sure that doesn't work before getting too carried away.

    K
    [/b]
    My Datsun did.
    Ty Till
    #16 ITS
    Rocky Mountain Division
    2007 RMDiv ITS champion

  7. #7
    Join Date
    May 2005
    Location
    Staying off the walls
    Posts
    1,049

    Default

    My 1st gen RX-7 does.
    Tom Sprecher

  8. #8
    Join Date
    Aug 2005
    Posts
    1,717

    Default

    My '97 BMW does... but then again maybe it might not be a good example as it was built in the part of the Fatherland know as South Carolina

    James
    STU BMW Z3 2.5liter

  9. #9
    Join Date
    Jan 2001
    Location
    Ashton, MD, USA
    Posts
    169

    Default

    All cars for the US market use the 7/16th fine by Federal law
    "Bad" Al Bell
    ITC #3 Datsun 510
    DC Region MARRS Series

  10. #10
    Join Date
    Sep 2001
    Location
    hampden,ma.usa
    Posts
    3,083

    Default

    All cars for the US market use the 7/16th fine by Federal law
    [/b]
    well i just learned something new. any idea when that took effect?
    dick patullo
    ner scca IT7 Rx7

  11. #11
    Join Date
    Jan 2001
    Location
    Ashton, MD, USA
    Posts
    169

    Default

    well i just learned something new. any idea when that took effect?
    [/b]
    No, but based on the cars I have seen, I would not be suprised if it was when seatbelt mounts were first required 1963?
    "Bad" Al Bell
    ITC #3 Datsun 510
    DC Region MARRS Series

  12. #12
    Join Date
    Apr 2002
    Location
    Hubertus, WI, USA
    Posts
    821

    Default

    All cars for the US market use the 7/16th fine by Federal law
    [/b]
    You sure about that? Are you saying all cars built for the US market, or all cars built in the US?

    I&#39;ll double check tonight when I get home, but I swear my factory Honda OEM bolts for my seat belts were metric <_< (1984 Civic)
    2002 Cen-Div ITC Champ
    (Converted to G-Prod in 2003)
    (Bumped to H-Prod in 2008)
    2008, 2011 HP Cen-Div Champ
    2011 HP National Champ

  13. #13
    Join Date
    Mar 2001
    Location
    Connecticut
    Posts
    7,381

    Default

    FMVSS (Federal Motor Vehicle Safety Standards) 209, regulating seat belt assemblies, requires "...seat belt assembly anchorages that do not require anchorage nuts, plates, or washers...shall have 7⁄16–20 UNF–2A or 1⁄2–13UNC–2A attachment bolts or equivalent metric hardware." I would imagine most manufacturers choose to go with the SAE standard rather than buck the trend and have to prove compatibility with metric.

    Yes, I have a copy. Yes, it&#39;s probably on the InterWeb...

  14. #14
    Join Date
    Feb 2003
    Posts
    1,106

    Default

    ....equivalent metric hardware....[/b]
    i am convinced mine are M12 by 1.25 fine thread. my guess is that the metric equivalent may just refer to the grade of the bolts. and if 7/16 or 1/2" diameter are okay, the 12mm is right between those.

    i will look at the geometry of the stock location vs. the recommended angle of the belt supplier to see if it should be changed.

    1985 CRX Si competed in Solo II: AS, CS, DS, GS
    1986 CRX Si competed in: SCCA Solo II CSP, SCCA ITA, SCCA ITB, NASA H5
    1988 CRX Si competed in ITA & STL

Bookmarks

Bookmarks

Posting Permissions

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