[TR] TR4 Motor Mount replacement and potential redesign

[Bob Labuz]

Will,

Do you have the engine torque bar installed on the carb side of the 
lower engine to prevent too much twisting?

This bar  and rubber buffer prevents the engine from turning too much to 
the psgr side during acceleration.

Bob

On 03/20/2014 02:27 PM, Will Daehler wrote:
> So my eight year old motor mounts failed after just eight years. Getting
> the replacement (TR4A style) ones installed was such a bitch! It was
> awkward to line up the studs into the holes, and even more awkward to get
> the nuts started. I swore many bad words. And certainly don't want to ever
> do that again.
>
> I had time to look at the failure mechanism of the old motor mounts. The
> construction consists of an upper metallic piece, a rubber mid-section, and
> a lower metallic piece.
>
> It seems like the weight of the engine puts the rubber into sheer, and the
> mount tears apart. Looking at the failed mounts from the side, the upper
> stud no longer is in line with the lower stud. They are now laterally
> offset. Still parallel though.
>
> The improved design (in my head) is to box in the rubber on the two open
> sides with more metal. That way the rubber would have to fight harder to
> sheer itself to death.
> Comments?
>
> Will Daehler
> 63 TR4 Powder Blue