Benefits to studs opposed to bolts

[talontsi01]

I'm just wondering what, if any, kind of advantage there is to having studs opposed to bolts on something like an exhaust manifold.

 

[luv2rallye]

The constant heating and cooling stresses the bolt/stud (and can make more brittle) so it would break much easier during disassembly. So a stud which does not have to be unscrewed is the much much better choice (even though it costs more).

 

[TMCRacing]

Studs provide a more even torque and do not distort the cylinder like a bolt.

 

[RamenPride]

makes it easier to put on (ie. you can slide it onto the studs instead of holding it while threading in a bolt). the head is aluminum, so it also lessens the chance of stripping the threads when tightening a bolt.