Quote:
Originally Posted by cn90
oldskewel is correct,
I have removed the bolt many times and compare it against a brand-new bolt.
There is no deformity of the old bolt from repeated tightening and loosening.
In other words, the old bolt does not length when compared with a brand-new bolt.
The fact that a bolt is angle-tightened does not mean it is a "use-once-and-discard" type of bolt.
This has been a funny thread, especially if read by BMW or indy mechanics, as they do not replace these bolts.
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The key is the torque process when it includes the statement to no reuse the bolts. But let's assume it is a standard bolt. Why does (not why do you think, not an opinion or guess) BMW state not to reuse the bolts?
It's not about what is the right decision. I certainly acknowledge I don't know the answer. This certainly is not standing on ceremony. It is about what information one uses to make the correct decision. I am challenging responses that are based on false premises and input that cannot be extrapolated to a conclusive decision. There has never been a trained bolt expert that is behind the decision to reuse the bolts. It always boils down to---most people do, BWW and Indie techs reuse them so it's OK. I think the decision to reuse the bolts would be the same without any input one way or the other---it is entirely cost driven.
I agree with what was said earlier---until we have an explanation directly from BMW the debate will continue--we still don't know why the statement or what happens if we ignore the instruction. IMO that information is the only information that is or can get to a conclusive answer. Please hurry, I have my X5 up on stands to change diff ratios so plate will be coming off.
It was fun for awhile. I enjoyed some of the comments. Ya'll be happy to hear I now think this is frustrating, irritating, meaningless, a waste of time, beating a dead horse and a bunch of other stuff like that. I'm glad to have provided at least some of you some laughs.