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Power Strokes
6.7 Aftermarket
6.7 Twin Turbo Setup
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[QUOTE="Wayne, post: 1091233, member: 863"] I have no idea what processes anyone else uses to ensure the bottom end stays together. The cap bolts are torque to yield, but I couldn't find anywhere in the instructions that the bolts must be replaced. I just don't feel comfortable re-using bolts that have already been stretched. In the assembly process, it calls for a bearing clearance check involving a full running torque assembly, disassembly, bearing clearance inspection, and final reassembly. The bolts originally supplied with the new ford short block were used for all sequences except for final installation for peace of mind despite no call for replacement in the manual. Considering the rod and main bearings are press fit, and do not have any tangs to keep them from spinning, we believe the design could have contributed to the bearings spinning. With as bad as the failure was on the "old" engine, we can't be totally certain of the cause of failure, so we're doing what we can with available components to avoid a repeat engine failure. Cases are rare, but I've seen mostly stock trucks that have spun mains. We're short blocking one at the dealership right now under factory warranty with that exact failure. [/QUOTE]
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