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Is this bolt strong enough for my coil over shock mount?

After mocking this up, I am taking a second look at it. Of course I will have to buy the right length, but will this 1/2" bolt (maybe 5/8) sustain driving without causing stress and bending? I am more concerned about the top mount as the bottom I will be using a 3/4 diameter bolt. If this mount set up is not good, ill have to make up a mount to "straddle" the coil instead. Thank you!2013-04-04_08-57-49_779.JPG
 
My coil overs are mounted with a 5/8" bolt on both the top and bottom.

Jim
 
Mike: I have a similar setup on the back of my '27. I used a grade 8 1/2" bolt and have no issues for about 7 years now. If its fully shouldered like you are showing, i don't see an issue. Carry on!:thumbsup:
 
My main concern was due to the length/leverage of this mounting type causing extra stress on the bolt. Thanks for the great info! Ill go with a grade 8 and keep an eye on it juat incase. Thanks again! Mike
 
A grade 8 in a single shear configuration would be plenty. I like the the 5/8's idea for a heavier car. Its not needed though, though if it were in a double shear, ie, a bracket on each side of the shock....I'd use a 5/8's.
If your gonna use the 1/2, use a shouldered grade 8 bolt, make sure the shouldered area doesn't have any sharp edges, chamfer all your bushings and holes lightly, to prevent cutting into the bolt. And torque the bolt to the nut for maximum strength....grade 8 polyloks....
 

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