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hi,
i decided to go this way, because i didn´t found any place to mount the hinge. there is not enough room, not enough material for threads (exept M3,M4). the good side is, that there is not enough room for bending either.
more i am concerned about damage by vibrations. the stock parts are more or less all mounted in rubber.
today i found +12 stripped threads on the K2 cylhead.
to eliminate the thread issue on the camtower screws, i replaced all 4 (middle) M6 screws with studs. the studs do have a M8 thread screwed in the aluhead, and on the other end do have a M6 thread. the camtowers are the modern ones with holes for fixation of the rocker arms. to mount these shafts it was necessary to cut the shafts in two and to take care that the inner half will be possible to be mounted from the camchainsprocket side.
i like this way of strengthening the fixation of the camtowers much more than welding and drilling the camcover. there are no valve springs on this earth to strip the 8mm threads. mounting camshaft, chain, rocker arms is more tricky, however.
mec
@TG: can you give me more infos on the endurance race, link, please?
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thanks for the idea of doing the studs for the cam towers mec. i finally ended up heli-coiling all the holes in my k4 head to the m6 thread but when i build the big motor next year i'm going to do the studs like you did. where did the studs come from or were those something custom made by you?