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M Coupe LTW build
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12-10-2018, 08:56 PM
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Michael9218
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Drives: 2007 Z4 M Coupe
Join Date: Oct 2012
Location: Woodstock, GA
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Motor mounts
Finished up the motor mounts and successfully test fit the motor and trans.
After a LOT of measuring, I decided 3.25" is as far as I can go without the need to cut structural sheet metal. Just not worth it for 1/2" to 3/4" I could get for the effort. 3.25" fits like it was meant to be that way!
To make the motor mounts I started by making a jig of the old mounts. To that jig, I mounted a bolt forward the 3.25" I want to move the motor back. I opted to use 3/16" plate for the base and feet. The arms are 1"x2"x1/8" rectangle tube. I gusseted with 3/16" plate where I felt it needed it. Each mount only weighs 1 pound more than the aluminum mounts. Hopefully these mounts will be stout enough. I believe they'll be stronger than the cast aluminum mounts. If they do fail, steel tends to bend where the cast aluminum mounts just snap.
Learning to weld, so no critique of the welds...
And now some before and after showing the fitment in the chassis.
Now with the motor in the car and the trans supported with a floor jack, I'll fabricate the trans mount.
Appreciate
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