Oh I was planning on doing so regardless, but I'm just trying to figure out if there's any other reason the bolts would be backing out besides a stretched/worn bolt.I'd change them out just to see if it was the old bolts. Just a few more bucks for some new bolts.
I'm thinking this is what likely happened as many know my tranny's and engine have been in and out of my car more than myself.The 330Ci and M3 use exactly the same flywheel bolts, and with my 330Ci they had to be replaced every time they were loosened.
One other issue I've seen is where bolts are over-torqued, and they are forced into plastic deformation resulting in the bolt coming loose. Once you stretch a metal, and it experiences plastic deformation, it does not return to it's original shape, and tensile strength is reduced.
I did not but the tranny was taken out exclusively to tighten them so I'm sure they were, it's also possible I suppose that it was a clutch plate bolt and not a flywheel bolt. The os giken has like 16 bolts.Did you personally torque or see them torqued? And to what value?