[DeTomaso] Shift Happens - Broken Motor Mount Bolt

Scott Mead Photography scott at scottmeadphotography.com
Mon May 14 14:12:48 EDT 2018


Larry, that's the crazy thing - only the one bolt has sheared. My guess is
that when the engine was last installed on Maui, the mechanic re-used the
original bolts and snapped it (over torqueing it).  The bolts are grade 5
(three lines).

-----Original Message-----
From: Larry Stock [mailto:larrys at panteraparts.com] 
Sent: Monday, May 14, 2018 11:04 AM
To: Scott Mead Photography; 'De Tomaso List'
Subject: Re: [DeTomaso] Shift Happens - Broken Motor Mount Bolt

There should be 2 bolts Scott, so I assume you sheared the other one also.
Since you so good with that camera, shoot me a photo of the other side as
well, I¹d like to see what the bolt heads indicate what grade of bolts you
had in there. Factory came with grade 5, and after Radial tires were
invented and installed the true nature of the difference of a monocoque vs
Unibody became evident with the shearing of the grade 5 bolts with the
engine being engineered as stressed member of the chassis. The fix has
been to use grade 8 or higher to keep that engine as a stressed member
brace of the chassis design. More Grip, more stress.

Larry

On 5/14/18, 10:47 AM, "DeTomaso on behalf of Scott Mead Photography"
<detomaso-bounces at server.detomasolist.com on behalf of
scott at scottmeadphotography.com> wrote:

>   Hi Everyone -
>
>
>   I was under the car this weekend, diagnosing my paperweight of an A/C
>   system, when I noticed something a little unnerving: The right-front
>   motor mount bolt had sheared off in the block, and the motor had
>   shifted. With the hole in the motor mount no longer lining up with bolt
>   remnants, there's no way I can "easy out" the bolt. Aside from pulling
>   the engine/ZF, can I take out the other bolt, loosen the bolts on the
>   other side and (using a block of wood under the oil pan), jack the
>   engine up a bit to re-align or remove the motor mount to extract the
>   bolt? Are there any other options I haven't thought of?
>
>
>   Thanks,
>
>
>   Scott (caretaker of 5638)
>
>
>
>   SMP-Slogo
>
>   PO Box 1190
>
>   Lake Arrowhead, CA 92352
>
>   T: 626-660-8075
>
>   E: scott at scottmeadphotography.com
>
>   W: www.scottmeadphotography.com
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