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Thread: Motor Mounts

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  1. #1
    Charter Member #43
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    Motor Mounts

    I am rebuilding my 496's and re-doing my bilge. On the front motor mounts I noticed the nuts are lower on the starboard side of each motor by 1/2 inch - but on the motor itself the motor mount brackets are flat/level. Anybody with a 496 notice if the front mounts are the same height?

  2. #2
    Charter Member #11 IrishTornado's Avatar
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    Re: Motor Mounts

    I remembering mine being like that. I know the 496 seems to be different than any other motor.

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    Re: Motor Mounts

    Thanks... You put an end to some serious stress.

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    Re: Motor Mounts

    I would highly recommend checking the alignment and make any adjustments necessary. It may have been out of alignment to begin with. It is quite common for the mounts to be uneven. The reason being is the motor mounts in the boat may not be the same height, due to the layup of the boat or if they are through bolted mounts, just not installed excactly the same. When the boat was initially rigged the alignment would have been set to account for this by adjusting the nuts and locking them in place. They also work loose quite often and the engine gets out of alignment.

    Bob Lloyd
    Full Throttle Marine

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    Re: Motor Mounts

    I have the 496 installation manual coming in the mail.

    How can I check engine alignment? I have Stellings boxes.

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    Charter Member #11 IrishTornado's Avatar
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    Re: Motor Mounts

    Quote Originally Posted by Keith342 View Post
    I have the 496 installation manual coming in the mail.

    How can I check engine alignment? I have Stellings boxes.
    Not sure on that one. I'd be calling Stellings before you run it though. I'm sure there is a way to do it. Actually if you didn't move the locknuts it should still be the same.

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    Re: Motor Mounts

    Quote Originally Posted by IrishTornado View Post
    Not sure on that one. I'd be calling Stellings before you run it though. I'm sure there is a way to do it. Actually if you didn't move the locknuts it should still be the same.
    Stellings was no help. They tell you to align it with the Merc gauge then put their coupler back on.

    The problem with not moving the locknuts is that I think they vibrated to this position... so they might be wrong.

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    Charter Member #11 IrishTornado's Avatar
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    Re: Motor Mounts

    How can you use a Mercury gauge to install a box that you have to remove the engine to install? If thats the case it sounds to me like you have alot of extra work to do to align a motor.

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    Charter Member #11 IrishTornado's Avatar
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    Re: Motor Mounts

    What did you end up finding out on this Keith? Honestly I find it hard to believe that the locknuts moved, but I suppose it is possible? I'm curious to see what you found out cause I know of 2 other people running the Stellings box. I'm sure it's definately not as big of a issue with alignment not being correct on a Stellings as it is a Imco, but it still can't be good for the carrier bearing and ujoints in that shaft.

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