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  1. #1
    Insane SVT Poster Steve2050's Avatar
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    Less clunk with 14mm bolts(pics)

    Got these 14mm IRS bolts from WS6JJP(John). I became sick of the clunking in the rear and decided to give the bolts a try.

    Compare the stock 12mm to the 14mm that should have been installed from Ford
    [IMG][/IMG]

    Place jack stand under car to support and gently support the IRS with jack
    [IMG][/IMG]

    Bolt comes out so easy as if doesn't even belong there
    [IMG][/IMG]

    Finally done and it took about 1.5hrs total including taking pics and a beer or two. Next time it would take half the time.
    [IMG][/IMG]

    Much less clunking than before but not entirely gone. It was worth it to do for the negligible cost IMO. Probably need all bushings replaced with delrin and it will be near perfect.
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  2. #2
    DRACULA'S COUNTRY 04redfireRO's Avatar
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    cool man.so where can i get a set?

    also they gonna fit trough the original holes or i have to enlarge them??
    Last edited by 04redfireRO; 04-11-2009 at 08:26 AM.

  3. #3
    Insane SVT Poster Steve2050's Avatar
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    I got them from a member here (WS6JJP) but Ford and Lethal also stock them. You do not have to enlarge the bolt holes. Easy and cheap mod

  4. #4
    Rabid Photog traktrbeam's Avatar
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    Sub for where to buy.



  5. #5
    Car Czar OH3Cobra's Avatar
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    having trouble gauging the exact location - any more pics? or arrows? Thanks!
    03 Mineral Grey Vert Lemoned #527
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  6. #6
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    Quote Originally Posted by oh3cobra View Post
    having trouble gauging the exact location - any more pics? Or arrows? Thanks!
    +1

  7. #7
    Insane SVT Poster Steve2050's Avatar
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    This is from the driver side. Bolt is located just forward of the rear tire. I didn't have to move the exhaust to get the bolt out.
    [IMG][/IMG]

  8. #8
    SVT God TERMIN8TR's Avatar
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    WS6JJP and I did mine last year too. Big difference

  9. #9
    Crazy SVT Poster Blown10thCobra's Avatar
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    I'm looking at the MM Low Profile IRS bolts on Lethal right now but it doesn't say if they're 14MM, anyone know? I'd hate to get them here only to find out they're still a 12MM


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  10. #10
    Insane SVT Poster Steve2050's Avatar
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    Quote Originally Posted by Blown10thCobra View Post
    I'm looking at the MM Low Profile IRS bolts on Lethal right now but it doesn't say if they're 14MM, anyone know? I'd hate to get them here only to find out they're still a 12MM
    These are the ones from Lethal. Low profiles bolts are the are for the rear of IRS.
    Maximum Motorsports 03-04 Cobra 14mm IRS Subframe Mounting Bolt [M14-109Bolt] : Lethal Performance, Performance parts for Ford Mustangs

  11. #11
    Crazy SVT Poster Blown10thCobra's Avatar
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    So the front bolt is the one that had the sizing issue, the rear size is ok other than needing the low profile bolt for wider tires?

  12. #12
    CARPE DIEM JetmechF16's Avatar
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    Quote Originally Posted by Blown10thCobra View Post
    So the front bolt is the one that had the sizing issue, the rear size is ok other than needing the low profile bolt for wider tires?
    exactly
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  13. #13
    Crazy SVT Poster trmin8ter03's Avatar
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    Thanks for the write up, I never knew exactly where that bolt was located but heard a lot about it.

  14. #14
    SVT God forcefedcobra's Avatar
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    just order ac427cobra's (bruce) full bushing kit and 14mm bolts in one shot. There will always be a little drive slop but you'll cure 99% of it and also 99% of wheel hop.
    2013 boss 302
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  15. #15
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    Not all Cobras have the wrong bolts.

  16. #16
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    I have been waiting to do my irs bushings and 14mm bolts. Thanks for the pics

  17. #17
    Crazy SVT Poster Blown10thCobra's Avatar
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    Quote Originally Posted by JetmechF16 View Post
    exactly
    Thanks for the clarification




    I'm ordering the 14MM bolts and low-profile bolts tonight. As soon as I get some money freed up I'll be buying the bushing kit as well

  18. #18
    Crazy SVT Poster 03SBGT's Avatar
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    Quote Originally Posted by Juruense View Post
    Not all Cobras have the wrong bolts.
    Yep. I remember when I first bought my Cobra and had it down at the dealership doing a couple of diff warranty things. I asked them to make sure I had the 14mm IRS bolts. I even made sure that they checked by asking them about it twice. At first they said they couldn't really tell....then did some checking out told me they were the 14mm ones.

    I would give that about a coin flips chance of being correct. Who knows if they actually checked or even knew what they were talking about.

    I have done a bunch of the bushing mods, diff brace, low profile IRS bolts. Pretty much everything except the DSS Level 5's.

    I will have to check one of these days myself to see what is down there. Thanks to the poster for posting this thread and pics of where those are located.
    Last edited by 03SBGT; 04-11-2009 at 08:24 PM.
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  19. #19
    Easy Going MFNG 03cobra#694's Avatar
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    Quote Originally Posted by Juruense View Post
    Not all Cobras have the wrong bolts.
    Interesting!I`ll be checking this today.Thanks
    Quote Originally Posted by 03SBGT View Post
    Thanks to the poster for posting this thread and pics of where those are located.
    +1

  20. #20
    SVT God hotcobra03's Avatar
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    14mm bolts

    ive read that you can check bolts with a wrench on threads...but if its only on some cobras,what was the reason?

    wrong bolts first?

    ran out of bolts,than used 12mm?

    my question,,what number cobra are you?

    im #1815 aug 02


    than clunk is less,wheel hop is less...how about tire spin and side to side wiggle...ive got this problem and its bugging me...anytime you try to go faster,wheels spin,,and yes thats with trying to feather it,,with new tires i get about a week of no spinning,,

    ive got 373`s...also im using the new bfg sport

  21. #21
    SVT God hotcobra03's Avatar
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    qoute on pinks

    Quote Originally Posted by Blown10thCobra View Post
    I'm looking at the MM Low Profile IRS bolts on Lethal right now but it doesn't say if they're 14MM, anyone know? I'd hate to get them here only to find out they're still a 12MM
    cant stop laughing ,,(20 cars) my buddy was a ricer,,took me 5yrs to get him to switch,,he now drives a 01Lightning,,

    hes now a full blown adult

  22. #22
    SVT God TERMIN8TR's Avatar
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    Quote Originally Posted by hotcobra03 View Post
    ive read that you can check bolts with a wrench on threads...but if its only on some cobras,what was the reason?

    wrong bolts first?

    ran out of bolts,than used 12mm?
    the assembly line operators were having a very hard time inserting the 14mm bolts and the engineers ok's the use of the 12mm bolts from what i understand.

  23. #23
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    In hindsight clearly the wrong decision!

  24. #24
    Insane SVT Poster Steve2050's Avatar
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    This is en easy and inexpensive fix. I'm glad to help out any SVTP members as I've learned tons here about these cars.

  25. #25
    Crazy SVT Poster dezzracer's Avatar
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    yea, ,my clunk is pretty much gone after installing the 14 ml bolts.

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