crankcase studs

[ogrilp400]

No idea Bruce. I remember going into an alloy steel supplier back in the seventies and asking for 5/16" wire. He asked how many yards I wanted and that was that.

 

[clevtrev]

I was only talking the horizontal ones in the cases, which get seen. Head studs already made of an en material.

In my case EN57...... Stainless. Head studs, that is. Crankcase studs are EN 58 BM.

 

[johnmead]

What do you torque the case studs/bolts to when putting the cases together?

John Mead

 

[chankly bore]

Do 'em up 'til they strip, then slacken 'em off half a turn! No torque figures were given, but same as for 8mm bolts would be a start. Most important is to clean out all the crap from the blind holes and make sure there are no raised bits on the jointing faces. then snug them down with lubricant or anti-galling goo and recheck them all after getting the motor good and warm, then again at 1000 miles.What ever you do, never mill the jointing faces to restore flatness or you'll stuff the cylinder bore registers. I've seen this happen and it is not pretty.