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KTL KTL is offline
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Join Date: Sep 2000
Location: Frankfort IL USA
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Note in the picture Evan posted where the shock "cap" was welded in a few places. It's not uncommon for the coilover to try & punch thru the top of the mount.

Rear crossmember, tower damage pics (from coliovers)

You can see in the above link that the RSR style pieces are an important part of the coilover conversion. But you also really really really need to plate-reinforce the actual crossmember itself where it butts up against the frame rails in the engine bay. This member was not designed to carry the forces that the coilovers put into it. So you have to beef up that joint alot.

Also keep in mind that the frame rails around the shock tower/engine bay are not heavily supported. So coilovers put a pretty big load on them and create some flex. That's why dedicated race cars put the rear "legs" of the cage down onto those frame rails because doing so accomplishes two things. 1) it gives the legs a solid place to land and 2) it provides additional frame rail support by transferring the force from the coilovers into the cage main hoop.
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Kevin L
Present: '86 Carrera, '79 911SC widebody conversion rolling racecar shell
Past: '87 Carrera
Old 01-31-2014, 12:46 PM
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