Well after writing a scathing letter to my dealer customer relations manager, they talked to me about the wheel hop issue and the 14 mm vs 12 mm IRS bolt issue. I gave them part numbers for the 14 mm bolts and explained to them about the 14 mm holes in the frame and even showed them the pics of a worn set of 12 mm bolts that were posted here a while back. They agreed to examine the stock 12 mm bolts for wear to see if this may be a contributor to the wheel hop.
They removed the stock 12 mm bolts and they found no wear indications. I have the bolts and can see no indications of major movement within the frame holes. They replaced the bolts with the 14mm bolts, part # W704939-S426, and the nuts, part # N801670-S100. The 14 mm bolts fit right into my Maximum Motorsports IRS bushings. I still have hop so these are not the cure all, but I did not expect them to be.
I don't know how much further I'm going to go to try to reduce the hop. I'm considering rear coilovers and thats about it. Just thought I would give a heads up that the 12 mm bolts may not be as big an issue as rumored.
The total cost to me: $18.64 for the Ford bolts and nuts, labor and car rental covered under warranty......
They removed the stock 12 mm bolts and they found no wear indications. I have the bolts and can see no indications of major movement within the frame holes. They replaced the bolts with the 14mm bolts, part # W704939-S426, and the nuts, part # N801670-S100. The 14 mm bolts fit right into my Maximum Motorsports IRS bushings. I still have hop so these are not the cure all, but I did not expect them to be.
I don't know how much further I'm going to go to try to reduce the hop. I'm considering rear coilovers and thats about it. Just thought I would give a heads up that the 12 mm bolts may not be as big an issue as rumored.
The total cost to me: $18.64 for the Ford bolts and nuts, labor and car rental covered under warranty......