Miata Alignment/Chamber Bolt Dimensions: Grassroots Motorsports forum: Grassroots Motorsports Magazine

Dec. 2, 2011 4:55 p.m. JohnyHachi6 Reader

Anyone have one of the A-arm eccentric alignment bolts on hand from an NA miata? Wondering what the inserted length (flange to end of threads) and max diameter (for hole clearance) is.

I have a lowered 280zx that is going to need a set of these to take out the rear toe and I don't want to have to enlarge the existing holes in the bushing sleeves to fit the 300zx bolts if there's something smaller that will fit.

Thanks!
Dec. 2, 2011 9:15 p.m. mith612 Reader

If Keith et al hasn't chimed in by then, I will measure the ones I have on hand tomorrow
Dec. 2, 2011 10:43 p.m. JohnyHachi6 Reader

Awesome - Thanks.
Dec. 3, 2011 9:28 a.m. Keith SuperDork

I'm at Thunderhill for the 25, so I'm no help on this one right now.
Dec. 3, 2011 12:16 p.m. mith612 Reader

So the picture should be pretty self explanatory. Overall insertion depth is 95 mm. Due to the slot in the bolt that the eccentric cam rides in, you have a useable depth from 55 to 78 mm. The bolt itself is just under 12 mm the entire length.
Dec. 3, 2011 2:52 p.m. JohnyHachi6 Reader

In reply to mith612:

Thanks a ton - much appreciated.

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