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Motor Mounts-'66 GT350 (Autocross Video!)

Discussion in '1965-1970 Shelby Mustang GT350 & GT500' started by lashss, Oct 5, 2006.

  1. Oct 5, 2006 #1
    lashss

    lashss Well-Known Member

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    I was at a local, impromptu autocross last night:

    YouTube - Shelby GT350 at "Cool Car Night"

    It wasn't bad as far as dark, parking garage autocrosses go. :)

    Anyways...during one of the runs, I noticed a lack of power and smelled coolant. I shut the motor off and coasted to a stop. I saw that one of the fan blades cut into radiator and shredded it like mozzarella.

    The rad was mounted securely and didn't seem to have moved. the fan was mounted securely and the blades were straight...except the one. The drive belt was still on and perfectly aligned. Could drivetrain movement have been severe enough to have moved the fan into the radiator's path?

    Thanks,
    LS
     
    lashss, Oct 5, 2006
    lashss, Oct 5, 2006
    #1
  2. Oct 6, 2006 #2
    Ranger Jerry

    Ranger Jerry Well-Known Member

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    LS, when I was reading your thread I had a bit of deja vu. At our last CECA track event of the season I had the same experience. I have (had) a Griffith radiator on my 65 fastback, the motor has 66 motor mounts. I was down shifting after a long straight away, the fan touched the radiator curling the ends and wedging it to stop against the radiator. Steam and the smell of anti-freeze and burning fan belt came immediatley after. After cleaning the engine compartment all of the same observation were made that you did. At home I noticed the driver side motor mount is split in two. With the weight of the motor on it you can hardly see it. There was enough of a forward shift for the fan to touch the radiator which is slightly thicker then a stock one. Check all the bolts and rubber parts on your mounts, engine and transmission with the weight off them. I'm going to replace my motor mounts with heavy duty polyurathane ones, and of coarse I'll be buying a new radiator. You know what they always say "YOU GOT TO PAY TO PLAY" Let me know what you find on yours? Good luck!
    Ranger Jerry
     
    Ranger Jerry, Oct 6, 2006
    Ranger Jerry, Oct 6, 2006
    #2
  3. Oct 7, 2006 #3
    Charley

    Charley Well-Known Member

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    Real common for the left side to break. I just had it happen on my 66 GT350 track car. On the new one I drilled a hole and put a 5/16" bolt with a nylock nut thru it so it can still stretch the rubber but not enough to come apart. In other words the bolt is not tight.
     
    Charley, Oct 7, 2006
    Charley, Oct 7, 2006
    #3
  4. Oct 7, 2006 #4
    jimk351c

    jimk351c Active Member

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    Washington D.C.? Where was this?
     
    jimk351c, Oct 7, 2006
    jimk351c, Oct 7, 2006
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  5. Oct 18, 2006 #5
    lashss

    lashss Well-Known Member

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    Top secret location near Tysons Corner. The cops came at 9pm and told us we were making too much noise.

    I was just giving someone a ride and thought about how much I love this '66. It is truly an impressive and awesome machine. The best part about it was giving some of the Fast and Furious chimps a ride and having them blown away by how flat and neutral the car handled and how powerful the brakes were.

    It was also near 80 degrees that night...I love October in Washington, DC.

    LS
     
    lashss, Oct 18, 2006
    lashss, Oct 18, 2006
    #5
  6. Oct 21, 2006 #6
    jimk351c

    jimk351c Active Member

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    Wow, not so far from me. Interesting.
     
    jimk351c, Oct 21, 2006
    jimk351c, Oct 21, 2006
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  7. May 18, 2008 #7
    lashss

    lashss Well-Known Member

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    Any recommendations on motor mounts?

    Prothane seems like a reputable manufacturer. I need a set of urethane pieces.

    Thanks,
    LS
     
    lashss, May 18, 2008
    lashss, May 18, 2008
    #7
  8. May 19, 2008 #8
    Jerry_Moss

    Jerry_Moss Well-Known Member

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    Hi Lashss

    Nice car!
    If you drive a car like this a ployuretane motor and transmission
    mounts is a must. My oprinion. Don´t forget the loss of power
    because of soft mounts. Thats why real race cars weld their
    engine in stiff so they don´t even move a pit! :thumbup:

    Bye Jerry
     
    Jerry_Moss, May 19, 2008
    Jerry_Moss, May 19, 2008
    #8
  9. May 19, 2008 #9
    lashss

    lashss Well-Known Member

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    Jerry, thanks...leaning that way.

    Thank you for the compliments...love this old wreck!

    LS
     

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    lashss, May 19, 2008
    lashss, May 19, 2008
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