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Thread: Trunk lid torsion bar adjustment

  1. #1
    Join Date
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    Trunk lid torsion bar adjustment

    Help!
    Need to adjust the trunk lid torsion bars to handle the increased weight of the trunk lid liner. Have installed 2 lids and am worried about decapitating me and my wife! Can anyone tell me how to adjust the bars? Appreciate it.
    Thanks,
    GordonB
    2003 MM DBP (BLUE) (300B) w/Lt Flint (Hers); htd seats, 6 CD. PCM s/w level CRD1.
    Mods:Trunk Liner from Decklid Designs, Sunroof (ASC Model 840), McGard wheel locks, Godshead badges--steering & grill (fm Ron), Mac/Marty's Fender Badges, Silverstar Headlights, FLM accs--rear spoiler, door edge guards & trunk organizer. Bob White graphics. KB Dead Pedal & Polished Alum. Pedals. M&Z rear cntrl arms. DR (Addco) rear sway bar (24mm). Pro-Gard rear close-out panel. TCE Perf. braided SS brake lines.
    Born 5/22/03 and adopted 7/21/03. One of 328 DBP for 2003 out of 7838. Build seq. nbr: 7500 of 7838. Color seq. nbr: 282 of 328.

    2004 DTR MM w/Lt Flint (His) with htd seats, 6 CD, Fact. Sunroof; born 6/15/04, adopted 7/8/04; one of 980 DTR for 2004 out of 3213. Upgraded same as Blue MM. Build seq. nbr: 3165 of 3214. Color seq. nbr: 973 of 980.

    Other cars: '00 'Vette Coupe (Nassau Blue). '14 Vette Coupe (Lime Rock Green)
    Car Clubs: MBCC

  2. #2
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    I think there's a special tool for this job but it's not that dangerous with a 12" crescent wrench and a pair of pliers. Just add one notch to one side and see if that's enough, then add one to the other if you need more oomph, and so on.

  3. #3
    Take all the stuff out of your trunk and hop in. Bring a flash light, a pry bar, and put something over the latch, say, a towel? Something thick so the trunk doesn't close carrying it's owner. I know we have those "Oh Shi!t I'm Locked In A Trunk" handles, but ya never know and I'm not about to risk it. Now those bars are much easier to move, but it'll still take some elbow grease depending on how fast you want the lid to open.

    Good Luck

  4. #4
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    Jason and David,
    Thank you for both of your suggestions. I'll try them shortly and report back.
    GordonB
    2003 MM DBP (BLUE) (300B) w/Lt Flint (Hers); htd seats, 6 CD. PCM s/w level CRD1.
    Mods:Trunk Liner from Decklid Designs, Sunroof (ASC Model 840), McGard wheel locks, Godshead badges--steering & grill (fm Ron), Mac/Marty's Fender Badges, Silverstar Headlights, FLM accs--rear spoiler, door edge guards & trunk organizer. Bob White graphics. KB Dead Pedal & Polished Alum. Pedals. M&Z rear cntrl arms. DR (Addco) rear sway bar (24mm). Pro-Gard rear close-out panel. TCE Perf. braided SS brake lines.
    Born 5/22/03 and adopted 7/21/03. One of 328 DBP for 2003 out of 7838. Build seq. nbr: 7500 of 7838. Color seq. nbr: 282 of 328.

    2004 DTR MM w/Lt Flint (His) with htd seats, 6 CD, Fact. Sunroof; born 6/15/04, adopted 7/8/04; one of 980 DTR for 2004 out of 3213. Upgraded same as Blue MM. Build seq. nbr: 3165 of 3214. Color seq. nbr: 973 of 980.

    Other cars: '00 'Vette Coupe (Nassau Blue). '14 Vette Coupe (Lime Rock Green)
    Car Clubs: MBCC

  5. #5
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    Quote Originally Posted by Rider90
    Take all the stuff out of your trunk and hop in. Bring a flash light, a pry bar, and put something over the latch, say, a towel? Something thick so the trunk doesn't close carrying it's owner. I know we have those "Oh Shi!t I'm Locked In A Trunk" handles, but ya never know and I'm not about to risk it. Now those bars are much easier to move, but it'll still take some elbow grease depending on how fast you want the lid to open.

    Good Luck
    What makes you think the bars are easier to move when the trunk is closed ??
    The Torsion bars act as a counterbalance for the trunk lid so it stays open.

    So if they are under tension when the trunk is open,
    what makes you think they aren't when the trunk is closed?
    How else would you be able to lift the trunk lid with just a finger?

    When the trunk is closed, that's when the greatest amount of torsion is on the bars.
    Pete...


    2k04 BLACK Mercury Marauder 300A #810 of 3223
    DOB 10/31/2003
    DOP 1/2/2004
    2k19 AGATE FORD Edge ST with Performance Brakes
    DOB 12/11/2018
    DOP 6/19/2019

    Water Wetter, K&N AirCharger/Drycharger, SS Inserts,
    SilverStar 9007SU, WeatherTech WeatherFlectors, Steering Wheel Badge,
    AutoMeter Gauges (Oil Press, Voltmeter, and Trans Oil Temp),
    ASC 840 VSS Sunroof, Kenwood KFC-C6879ie x4, COBRA Fender Badges,
    Z&M Rear Control Arms, FORD GT Coil Covers,
    Gorilla Lock Lugs all around, Decklid Designs Trunk Lid Liner,
    SCT Xcalibrator2 (Innovative Interceptors) w/Lidio's (Alternative Automotive) Marauder 3.55 tuning,
    4R75W by Fred Brown's Performance Transmission, tuned to match Lidio's tune,
    DG Motorsports Carbon Fiber Radiator Cover, Zack's Badgeless Grille,
    Accel 140034-8 Coil Packs, Granatelli Motorsports Coil-On-Plug wires
    Even though I walk through the valley of the shadow of rice,
    I will fear no turbo for displacement is with me.

  6. #6
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    MENINBLK is right, do it with the lid all the way up. Just watch out for it to want to come down when you take the tension off one of the rods.

  7. #7
    I guess my brain is getting dusty. I did this on my 99 CVPI a couple years ago, oh well, best of luck with the change and keep us posted.

  8. #8
    Join Date
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    IIRC Carfixer Recommended an Old Serpentine Belt to do the job.
    '15 F250 CC 4WD 6.7L PSD
    '11 CVLX
    '05 E55 AMG
    '91 350SD Turbodiesel
    '97 Land Cruiser/78 Land Cruiser





  9. #9
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    Quote Originally Posted by wchain
    IIRC Carfixer Recommended an Old Serpentine Belt to do the job.
    I had a problem with my lid wanting to chop my head off on windy days after the spoiler was put on.

    The old belt trick was EXACTLY what Claude(carfixer) did when he adjusted mine.



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  10. #10
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    Quote Originally Posted by wchain
    IIRC Carfixer Recommended an Old Serpentine Belt to do the job.
    And what goes on the other end of the belt, a mule ?

    Someone has to have a TOOL for this.
    The last thing I want to do is drive up to St. Thomas and steal it.
    Pete...


    2k04 BLACK Mercury Marauder 300A #810 of 3223
    DOB 10/31/2003
    DOP 1/2/2004
    2k19 AGATE FORD Edge ST with Performance Brakes
    DOB 12/11/2018
    DOP 6/19/2019

    Water Wetter, K&N AirCharger/Drycharger, SS Inserts,
    SilverStar 9007SU, WeatherTech WeatherFlectors, Steering Wheel Badge,
    AutoMeter Gauges (Oil Press, Voltmeter, and Trans Oil Temp),
    ASC 840 VSS Sunroof, Kenwood KFC-C6879ie x4, COBRA Fender Badges,
    Z&M Rear Control Arms, FORD GT Coil Covers,
    Gorilla Lock Lugs all around, Decklid Designs Trunk Lid Liner,
    SCT Xcalibrator2 (Innovative Interceptors) w/Lidio's (Alternative Automotive) Marauder 3.55 tuning,
    4R75W by Fred Brown's Performance Transmission, tuned to match Lidio's tune,
    DG Motorsports Carbon Fiber Radiator Cover, Zack's Badgeless Grille,
    Accel 140034-8 Coil Packs, Granatelli Motorsports Coil-On-Plug wires
    Even though I walk through the valley of the shadow of rice,
    I will fear no turbo for displacement is with me.

  11. #11
    Join Date
    Feb 2003
    Location
    SW Florida
    Posts
    1,585
    Quote Originally Posted by MENINBLK
    And what goes on the other end of the belt, a mule ?
    It will certainly give you a good workout without a doubt.



    It was time for a new signature .....

    Here it is .....

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  12. #12
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    The best way I've found to adjust trunk torsion springs is to take a 10 or 11mm deep socket on a 6" extension (3/8" drive) and slip it over the end and CAREFULLY move the rod to the next notch. Sometimes you may have to adjust both sides. This setup will not twist like a wrench will.
    1965 FALCON WAGON
    1967 RANCHERO
    1968 MUSTANG GT FASTBACK
    2004 300B MARAUDER TRILOGY #127
    Retired 2003 300A MARAUDER
    NEW ADDITION! 1968 Shelby GT 350

  13. #13
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    Quote Originally Posted by frdwrnch
    The best way I've found to adjust trunk torsion springs is to take a 10 or 11mm deep socket on a 6" extension (3/8" drive) and slip it over the end and CAREFULLY move the rod to the next notch. Sometimes you may have to adjust both sides. This setup will not twist like a wrench will.
    This I am willing to try.
    I can do it with either a breaker bar, or a socket wrench I have
    that locks onto the socket.
    Pete...


    2k04 BLACK Mercury Marauder 300A #810 of 3223
    DOB 10/31/2003
    DOP 1/2/2004
    2k19 AGATE FORD Edge ST with Performance Brakes
    DOB 12/11/2018
    DOP 6/19/2019

    Water Wetter, K&N AirCharger/Drycharger, SS Inserts,
    SilverStar 9007SU, WeatherTech WeatherFlectors, Steering Wheel Badge,
    AutoMeter Gauges (Oil Press, Voltmeter, and Trans Oil Temp),
    ASC 840 VSS Sunroof, Kenwood KFC-C6879ie x4, COBRA Fender Badges,
    Z&M Rear Control Arms, FORD GT Coil Covers,
    Gorilla Lock Lugs all around, Decklid Designs Trunk Lid Liner,
    SCT Xcalibrator2 (Innovative Interceptors) w/Lidio's (Alternative Automotive) Marauder 3.55 tuning,
    4R75W by Fred Brown's Performance Transmission, tuned to match Lidio's tune,
    DG Motorsports Carbon Fiber Radiator Cover, Zack's Badgeless Grille,
    Accel 140034-8 Coil Packs, Granatelli Motorsports Coil-On-Plug wires
    Even though I walk through the valley of the shadow of rice,
    I will fear no turbo for displacement is with me.

  14. #14
    Join Date
    Mar 2003
    Location
    ST. AUGUSTINE FL BY WAY OF NC
    Age
    60
    Posts
    765
    You're right, I stand corrected. There is not enought clearance to the trunk floor w/ the extension but i just tried it w/ a ratchet and a 10mm deep scoket and it worked.
    1965 FALCON WAGON
    1967 RANCHERO
    1968 MUSTANG GT FASTBACK
    2004 300B MARAUDER TRILOGY #127
    Retired 2003 300A MARAUDER
    NEW ADDITION! 1968 Shelby GT 350

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