To pin or not to pin left V8 motor mount????

Discussion in 'General Maverick/Comet' started by Cruzin Illusion, Mar 8, 2015.

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  1. Cruzin Illusion

    Cruzin Illusion Enigma

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    Was getting everything ready to put in my 363 stroker and was wondering if I should drill and pin the left side motor mount?

    What are your thoughts? Will it cause major vibration issues?
     
    Cruzin Illusion, Mar 8, 2015
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  2. Bryant

    Bryant forgot more than learned

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    definitely do it.
     
    Bryant, Mar 8, 2015
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  3. rthomas771

    rthomas771 Member

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    Pin them. When I pinned my Falcon mounts I didn't crank down real tight on the bolt/nut. This gave the rubber enough room to do it's thing.
     
    rthomas771, Mar 8, 2015
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  4. JoeB

    JoeB Member

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    Please school me in pinning the mounts, to decrease stresses on the rubber? Increase shear strength? Pin what to what?
     
    JoeB, Mar 8, 2015
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  5. Crazy Larry

    Crazy Larry Member

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    Don't they already have pins? Mine do.
     
    Crazy Larry, Mar 8, 2015
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  6. bmcdaniel

    bmcdaniel Senile Member

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    Some come like that, some don't. Just drill a hole all the way through the mount and put 5/16 bolt in there with a nylon locking nut or use a regular nut with Loctite. Don't torque it down tight, leave just a little slop.
     
    bmcdaniel, Mar 8, 2015
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  7. Cruzin Illusion

    Cruzin Illusion Enigma

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    I have been looking for a set that are pinned and can not find a set. I purchased a set of NOS mounts that show them with the pins on ebay. When they arrive they did not have the pins.
     
    Cruzin Illusion, Mar 8, 2015
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  8. Cruzin Illusion

    Cruzin Illusion Enigma

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    Also would you pin both sides or just the left mount?
     
    Cruzin Illusion, Mar 8, 2015
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  9. 55crownvic

    55crownvic Member

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    So, we are talking about the motor mounts, one half attached to the motor, the other half attached to the frame, correct?

    When the two halves come together, run a bolt thru the holes but dont tighten that bolt? Werent they tightened from the factory? Just wanting to be clear on this.
     
    55crownvic, Mar 8, 2015
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  10. RMiller

    RMiller My name is Rick

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    It ties the two halves together so if the rubber fails the engine will not lift off the frame pads under acceleration or deceleration. You are basically adding a bolt like the one in this picture.

    [​IMG]
     
    RMiller, Mar 8, 2015
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  11. groberts101

    groberts101 Member

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    you'll only need to pin the one side as there is no physical way the other could fail in the same dramatic "hood clearancing" manner.
     
    groberts101, Mar 9, 2015
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  12. Bryant

    Bryant forgot more than learned

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    just to help clarify, the engine twists when you accelerate. this twist stretches the drivers side motor mount and trys to pull it apart. i have found that about 400 hp will rip the parts store replacement mounts in half quickly. so putting a bolt through the mount will keep it from stretching and ripping the mount apart. also the limiting the amount the motor can move in the chassis means more power transferred to the ground.
     
    Bryant, Mar 9, 2015
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  13. JoeB

    JoeB Member

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    Engine mount failure insurance...got it...
    Thanks
     
    JoeB, Mar 9, 2015
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  14. Rasit

    Rasit Member

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    How bout counter-clockwise reverse burn outs!!:drool::drool:
     
    Rasit, Mar 9, 2015
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  15. groberts101

    groberts101 Member

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    lol.. "Rockfords" don't count. Not enough traction to do the same damage.

    But maybe.. just maybe.. if Dad ever decides to enter the demolition derby with it?... doing both sides would probably be best.
     
    groberts101, Mar 9, 2015
    #15
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