We're not doing anything new here. Mazda added these braces to the miata in
later years.
Here's one on a 1994 miata. The braces stiffen chassis, reduce noise, and improve
handling.
This sounds good. I wanted one for my 1990. It turns out that the holes are
already there.
The plans from this came from the miata.net forum. Here's all it is.
The angle iron needed to be cut to 18"
Then per the miata.net article, I drilled two 5/16" holes on 16 5/8 "
centers.
In later years, Mazda welded in threaded bosses for the subframe brace. We
have
to fish the bolts through the frame. A lock washer is needed on the bolt.
.
Here's the bolt poking out. Here's the bar getting attached. There's a second
lock
;washer under the nut.
And we're all done. The next step is a brace for the rear.
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April 5, 2002