From an engineering perspective, bolts are so much inferior to studs on a cylinder head. When torquing a bolt, you damage it because it turns inside the hole, leading to rotational stress, on top of the pulling force. Studs are different, they don't turn, and hence suffer only longitudinal stress.
I was referencing my statement from a practical
point of view _ give me bolts over studs any day of the week.
As an example with some 46 studs in RR's 6 cylinder engine, even with the torsional stress of a bolt, it would have so much better just from a serviceability stand point.
Even back in the late 40's, metallurgy was developed enough where bolts would have worked very well, especially in the "6" engine because the head was so shallow.
Or an over engineered distributor with duel points on an engine that red-lines at 4200 rpm ?
Engineers botch things too, the early 6 cylinder engine had 5/16th studs in them _ they weren't thick enough.
They were replaced with 3/8th studs later on. (not sure when ?)
And when it comes to engineering, I also look at things from a practical perspective.
I've worked on engines since I was a kid, and I've come across some real head shakers over the years; why was this engineered this way, what were they thinking ?
Or maybe engineers knew better and the bean counters try to save a few penny's by using cheap plastic parts, but this is a RR we're talking about; spare no expense right ?
Or maybe not _ when engineers design a crank with sludge traps on them to make sure it gets good and plugged with stuff.
Or an overly complex dampener that gets plugged up with sludge because there was no way for new oil to enter the device.
Even when it comes to Rolls Royce, why were metal and asbestos head gaskets used in their Turbo R engines, surely they must have known that those types of gaskets would not stand the combustion pressures of an engine with a turbo ???
I don't have much faith in engineers...
Have a look here at approximately 4:41 here, note the bolts
holding the head down, they're Torx head too, or from as best as I can tell. They're not even using studs on the rods either.
Also note the use of MLS head gaskets too.
I guess it took them a while to get it right...