high mileage motor. done at 4000 rpm

Be careful of the thread pitch. Those stamped steel nut-serts in the lower A-arm break easy.
 
Be careful of the thread pitch. Those stamped steel nut-serts in the lower A-arm break easy.

I lost those things years ago. I'm running good 'ol hardware store Grade 10.8 metric, welded to the arm with the head on the top side (threads down), with nylock nuts holding the T-bar on.
 
I lost those things years ago. I'm running good 'ol hardware store Grade 10.8 metric, welded to the arm with the head on the top side (threads down), with nylock nuts holding the T-bar on.

They're surprisingly cheesy. Not much material involved.
 
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