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    Author Topic: Hood lifts up and shakes at speed  (Read 2433 times)

    Offline 1971Challenger

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    Hood lifts up and shakes at speed
    « on: July 15, 2006 - 09:41:55 AM »
    Hello Everyone,

    My first post! looks like a good board indeed, ok so now my issue:

    I have a 71 Challenger whos hood starts to lift up from the the drivers side edge and comes up a got 1-2 inches at 100+mph (it starts to eek up around 70ish)
    also the front of the hood (where the latch is) shakes/vibrates rather quickly. I'm afaid this thing is gonna let go and thats gonna be ugly to say the least (i had hood smash let go a few years ago on an audi, it was bad)

    So why does this hood rise up? hood springs weak? I though about adding those hood pin's allthough not correct for the car, its beat the alternative.
    I also had to lift and loose to Rustang last night b/c the hood was comming up, now that reason to fix it right there!

    Also the hood never sits right on the drivers side, its seems up a little, but this is minor to the hood lift & shake.

    Pics attached..

    Cheers!,
    //Tom
    71 Challenger
    727 Slap
    360cid/380hp crate
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    "Understeer" is when you hit the fence with the front of the car. "Oversteer" is when you hit the fence with the rear of the car. "Horsepower" is how fast you hit the fence. "Torque" is how far you take the fence with you.


    Offline Bullitt-

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    Re: Hood lifts up and shakes at speed
    « Reply #1 on: July 15, 2006 - 10:29:21 AM »
    Welcome to the board 1971Challenger, I believe your problem is not springs but worn pivots, my hood does the same thing all the time, I can push down on the rear to get it straight but soon as I open & close it the rear stays up, mine was caused by an accident which sprung the hinges.  :bigshades:
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    Wade  73 Rallye 340..'77 Millennium Falcon...13 R/T Classic   Huntsville, AL
    Screwed by Photobucket!

    Offline 1971Challenger

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    Re: Hood lifts up and shakes at speed
    « Reply #2 on: July 15, 2006 - 11:10:32 AM »
    Hmm Interesting,

    Yes, my hood does the exact same, when I come to a stop I can push it back down and it looks normal, and if I open/close the hood it sticks up, but again can push it back down where it stays until I get going on the highway.

    What/where are the pivots? are you refering to the hood latch assby. where the hood springs connect and bolts to the hood? these dont look like I can do anything to them or can I?  Do I need new hood hinges?


    Any idea about the front of the hood shaking at speed? I think this is amplified by the hood starting to raise and air getting under it and buffeting (sp?)
    Logged
    "Understeer" is when you hit the fence with the front of the car. "Oversteer" is when you hit the fence with the rear of the car. "Horsepower" is how fast you hit the fence. "Torque" is how far you take the fence with you.

    Offline Ravage

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    • 1974 318 'Cuda
    Re: Hood lifts up and shakes at speed
    « Reply #3 on: July 15, 2006 - 11:21:41 AM »
    This one has me curious too ,every time I close my hood I push one side down and pull the other up.It'll stay put untill the next time I open/close it.Also ,when I pull the release on my hood it sticks ,and I push it back down and pull the release a second time and it opens right up.Sometimes a good "Fonzie" hit will open it the first time.
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    "I flipped off a box of kittens once..." (Tycho on being evil)

    Offline Bullitt-

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    Re: Hood lifts up and shakes at speed
    « Reply #4 on: July 15, 2006 - 02:38:48 PM »
    What I am calling pivots are the parts of the hinge where it articulates. I have seen a website for someone who rebuilds them, pretty expensive, I don't believe this is something we can do for ourselves. I have purchased a used pair in hopes that they will be OK for $100.00 I have seen a few go for less & more.
    As far as the shaking there are some rubber pieces down the side of the fender that may be missing or the screw-in adjusters could just need raising.  :dunno:
    Try running it on up to about 150 & see if the problem goes away!  :grinyes:

    RAVAGE, I can't imagine why you would have one corner going down unless it is just out of adjustment. The hinges have slotted mounting holes that allow you to move it back & forth at the bottom or top or both, others here I'm sure have more experience & can probably tell you just what to do & hopefully that will fix the other side.  :clueless:
    « Last Edit: July 15, 2006 - 02:53:00 PM by bullitt99 »
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    Wade  73 Rallye 340..'77 Millennium Falcon...13 R/T Classic   Huntsville, AL
    Screwed by Photobucket!

    Offline EVIL72

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    Re: Hood lifts up and shakes at speed
    « Reply #5 on: July 15, 2006 - 02:53:16 PM »
     Mine does the same thing on the drivers side, it drives me nuts when I'm on the freeway. I'm going to go with hood pins, but I'd still like to get the hinges fixed.
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    ROB
    1972 Dodge Challenger 340ci
    1970 Pro Street Duster (Under Construction)

    Offline Bullitt-

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    Re: Hood lifts up and shakes at speed
    « Reply #6 on: July 15, 2006 - 02:57:35 PM »
    just found this,   not bad price compared to what I've seen
    http://ll.hemmings.com/pdfs/SMSAutoR230074.PDF
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    Wade  73 Rallye 340..'77 Millennium Falcon...13 R/T Classic   Huntsville, AL
    Screwed by Photobucket!

    Offline Ravage

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    • 1974 318 'Cuda
    Re: Hood lifts up and shakes at speed
    « Reply #7 on: July 15, 2006 - 03:27:14 PM »
    My car has all kinds of sillyness going on ,I'm going to be an cuda expert by the time I finish my "simple" paint job  :working:
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    "I flipped off a box of kittens once..." (Tycho on being evil)

    Offline Bullitt-

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    Re: Hood lifts up and shakes at speed
    « Reply #8 on: July 15, 2006 - 03:30:05 PM »
    Quote from: Ravage on July 15, 2006 - 03:27:14 PM
    My car has all kinds of sillyness going on ,I'm going to be an cuda expert by the time I finish my "simple" paint job  :working:
        I"m seening it like a mile long row of dominoes KNOCK JUT ONE OVER & THERE YA GO
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    Wade  73 Rallye 340..'77 Millennium Falcon...13 R/T Classic   Huntsville, AL
    Screwed by Photobucket!

    Offline Challenger6pak

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    Re: Hood lifts up and shakes at speed
    « Reply #9 on: July 16, 2006 - 06:46:56 PM »
    SMS restores hinges.  This post may help.
    http://www.cuda-challenger.com/cc/index.php?topic=22266.0
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    1969 Sport Satellite H code convertible, 1970 Cuda 440+6, 1970 Challenger R/T 440+6, 1970 Challenger 383 R/T auto, 1970 Challenger R/T 383 4 speed,1971 Challenger convertible.

    Offline 1971Challenger

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    Re: Hood lifts up and shakes at speed
    « Reply #10 on: July 16, 2006 - 09:10:57 PM »
    Thanks, I will have to check them out.

    Did you guys (or anyone?) put hood pins in b/c you though the hood might meet your windsheild? I hate to point them on b/c there are not correct not to mention drilling holes in my good Rally hood. But I'm worried it might let go.

    Attached are the pics of my old audi that let go.
    Logged
    "Understeer" is when you hit the fence with the front of the car. "Oversteer" is when you hit the fence with the rear of the car. "Horsepower" is how fast you hit the fence. "Torque" is how far you take the fence with you.

    Offline Carlwalski

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    Re: Hood lifts up and shakes at speed
    « Reply #11 on: July 16, 2006 - 09:31:23 PM »


    That was my main reason. I've seen some pretty bad photos of cars with hoods up against the windscreen.

    Not pretty and for cheap it's a safe precaution.  :thumbsup:
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    1970 Dodge Challenger R/T
    White, License Plate, 0A-5599
    540ci Aluminium Hemi, F.A.S.T EFI
    TF-727 Gear Vendor OD, Dana 60

    Offline Judgester

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    • Mid-Life Crisis Relief
    Re: Hood lifts up and shakes at speed
    « Reply #12 on: July 17, 2006 - 05:44:06 AM »
    Hi Tom,

    I agree with other posts pointing to the hinge pins as the problem. I am at the final stages of a complete resto on my '70 Challenger. The hood would not sit correctly or even return to the same position without a lot of persuasion. I am using a shop that only does MOPAR muscle restorations. They sent the hinges out for a rebuild and now they are perfect. If you want the name of the hinge rebuild shop let me know.

    Jim
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    Offline 1971Challenger

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    Re: Hood lifts up and shakes at speed
    « Reply #13 on: July 17, 2006 - 06:41:41 AM »
    Hi Jim,

    your 70' is looking good!

    Sure, if/when you get a chance I'll take the hinge rebuild place info..

    Cheers,
    //Tom
    Logged
    "Understeer" is when you hit the fence with the front of the car. "Oversteer" is when you hit the fence with the rear of the car. "Horsepower" is how fast you hit the fence. "Torque" is how far you take the fence with you.

    Offline EvilTwinATX

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    Re: Hood lifts up and shakes at speed
    « Reply #14 on: July 17, 2006 - 07:52:03 AM »
    yes, please. I am starting to put mine back together pretty soon and need to get mine redone.

    Brent
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