This is just a quick way of stopping the exhaust manifolds on water cooled bikes constantly shaking loose. I found that even with decent loctite the bolts would still loosen up eventually and getting the manifold on with the engine in the bike was the stuff of nightmares.
So with the tops cut off a pair of M6 stainless bolts i threaded the new studs into the exhaust manifold mounting holes making sure they bottomed out before tightening them up with some good grade loctite (see the post about inlet manifold studs for more details).
With that done the manifold slides easily over the studs and is held on with a pair of Nyloc nuts. its much easier getting a socket in there to do them up as well vs wrestling around with an allen key.
Added bonus in that the chance of stripping the hole out in the barrel is much less, and if the thread on the stud breaks you can just weld a bar onto the stud and twist it out (the heat of the welding will loosen up the loctite)
I havent had any temperature related problems with the nylocs yet but if i do there's plenty of alternatives like split beam locknuts and glenloch nuts amongst others.
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