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Last Post 17 Sep 2011 11:55 AM by  SMSupercoupe
Motor mount question
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SMSupercoupe
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Posts:195


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10 Sep 2011 02:55 PM

    15.10.J reads:

    Engine mounts may be replaced, but must attach in the factory
    location(s) without additional modification or changes. Engine posi-
    tion may not be changed. Hydraulic shock type rear engine locators,
    or bobble struts, may be replaced by manufacturer’s performance
    part or aftermarket replacement part. This part must retain factory
    dimensions and attachment points, including factory design. (Ex-
    ample: If factory locator/bobble strut is gas or hydraulic piston type,
    replacement part must be gas or hydraulic piston type.) If one or
    more non-OE engine mounts are used, 15.10.K does not apply and
    a torque suppression device may not be used.

    I'm guessing the "including factory design" bit excludes replacing a 2-piece cast iron motor mount with a tubular steel, 1-piece mount, but there's no harm in getting other opinions. This question particularly concerns the Spohn motor mounts for the 4th-gen F-body (see here http://www.spohn.net/shop/1998-2002...ounts.html ). What's the community interpretation regarding these parts?

    djsilver
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    Posts:187


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    10 Sep 2011 11:17 PM
    I believe the pronoun "this design" refers to the bobble strut description in the previous sentence that are typically found on FWD cars. The reference to a "torque suppression device" is from section K. that allows you to use either a torque suppression device "or" non-oem motor-mounts but not both. That said, I think the rule allows you to replace the motor mounts but I don't see where you'd be allowed to replace the "stands" that they're mounted on. Do yours look something like this picture? http://i287.photobucket.com/albums/ll159/veee8/013-1.jpg
    SMSupercoupe
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    Posts:195


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    10 Sep 2011 11:26 PM
    Yes, that's the stock design. It didn't occur to me that the lower half of the mount might not be considered part of the motor mount, though you may be right.
    djsilver
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    Posts:187


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    10 Sep 2011 11:35 PM
    I think you can probably find someone that makes a solid metal piece that replaces the mount itself and be legal, but I think you're stuck with the stand that it's mounted on.
    Marshall Grice
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    Posts:303


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    12 Sep 2011 10:34 AM
    seems to me that everything between the motor and the subframe would be considered motor mount. I don't see why you can't do the tubular mounts.
    SMSupercoupe
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    Posts:195


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    16 Sep 2011 05:56 PM
    Any other opinions?
    01 FS Z28
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    Posts:1160


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    17 Sep 2011 03:39 AM
    I know a guy that can help, for about $60...... and no legality issues either. :)
    SMSupercoupe
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    Posts:195


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    17 Sep 2011 11:55 AM
    I'll get in touch with you, Sam. Thanks.
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