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This has always bothered me. Waynes book states 23.5 ft-lbs, retorque after 500 miles. The Clymer book states 23 ft-lbs. No mention of retightening. Haynes book states 21 ft-lbs, no mention of retightening. Andersons Porsche 911 Performance Handbook states 25 ft-lbs for steel studs and 29 ft-lbs for Dilavar, no mention of retightening. The factory manual states 11 ft-lbs, then 90* turn, no mention of retightening. The local dealership tech believes Porsche manual should be followed, no retightening of nuts. I believe Porsche used some intelligent engineers over the years and might be the best route to take. Perhaps it is different for built engines pushed hard with higher horsepower, but can anyone give me a reason on a standard rebuild to use a different method than the factory manual?
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