04-11-2009, 06:17 PM
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Senior Club Cobra Member
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Join Date: Jun 2007
Location: Covington,
wa
Cobra Make, Engine: Superformance # 532, 466 BB, 560HP
Posts: 3,027
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Not Ranked
Quote:
Originally Posted by JCoop
I finished replacing all shock bushings and sleeves on the QA1s on my car. I also replaced all the 12mm bolts with the appropriate 1/2" hardened bolts with no threads in the stress zone. (I had to cut the bolts as they were too long with this spec). I also bored out the mounting bracket holes to 1/2". The result is a different riding car. It rides drum tight with no rattles, and turn in is very precise at "lively" speeds, with just a hint of understeer that disappears and corrects as soon as I let off the throttle. If I were to do it over, though, I think I'd opt for the more expensive but precise heim end rod bearings that are available to replace the bushings. In addition to absolutely no slop, it forgives some of the not-so-precise alignment of the upper and lower mounting brackets.
All in all, a worthwhile weekend's worth of work...
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When you say "....hardened bolts..." you are not referring to grade 8 bolts are you? |