[DML] Modified Trailing Arms For 1/2" Bolts
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[DML] Modified Trailing Arms For 1/2" Bolts

This should definitely cause some wailing & gnashing of teeth:

I just modified #2508's trailing arms and bushings for 1/2" diameter bolts (removed slightly more than 1/64" of material). Big snub washers have to be enlarged as well. Stock shims slip right over a 1/2" bolt no problem, as do the serrated lock washers. 

1/2" bolts open many more possibilities than do 12mm. Bare minimum I will install Grade 9's (3.5% stronger than Grade 12.9, 20% stronger than OEM). I also am going to try to find fractional Inconel 718's (same material as Toby's bolts). Whatever gets installed will have proper hex heads rather than socket heads (Grade 9 heads are much taller than standard heads, about the same size as a nut). It's easier to find zinc or cadmium plated 1/2" bolts in TAB lengths than 12mm. And they're less expensive too (TAB length Grade 9's are about $7 per bolt). 

Bill Robertson


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