60 head studs

(quoted from post at 13:30:39 09/01/14) How tight do head studs need to be on a 60?
I T manual doesn't say unless I missed it.
I couldn't find an exact number either in the text, so I used the recommended torque values in the table in the back for 5/8 inch studs. Figuring 60% yield for a B7 or grade 5, it would be 150 ft-lb. This also correlates to a 7/16" stud @ 75 ft-lb and I've done hundreds of those. Maybe someone has a more exact number, but that's what I used.
 
On page 4 of my IT manual (JD-10), head torque for all versions of the model 60 is listed as 150 lbs./ft.
 
Yea...on page 4 its saying 150 ft lbs but that is for torquing the head down, im talking about just the stud bolts in the block
 
I can't see any reason you would need more than 40 ft. lbs. on the studs themselves, I would NOT torque them to even 100 as they only need to be seated fully and the real fastening pull comes from the head nuts later at 150 ft lbs. Not in the book so common sense fills in here.
 
Kinda what I was thinking, I know when I removed them they were not real right, came right out with stud remover
 
Lucky you, smart guy put yours together for sure. Mine came apart with 400 ft lbs and a rifle shot sound. Cracks in cylinder radiating from every head stud boss and couldn't be welded without making even more cracks each time they tried. Gave up after 3 tries with same story and brought it home. 3 large bottles of Bar's leak only thing that allows me to run my 44 A.
 
The end of the stud that goes into the block is cut with an interference fit, meaning the threads are not cut as deep. Turn them back into the block as far as you are comfortable with. Some will go in easy and some will fight you every step of the way. If you try to bottom every one it is then very likely you could split the block out through the threads. Put some no. 3 Permatex or other good sealer on the threads and turn them in with a stud driver or double nuts on the studs without forcing them past the point of comfort. Some will naturally be longer than others but that won't hurt anything. Mike
 
Ok thanks, I took the head, block and manifold to the machine shop this morning, the block has a pretty good ring Groove so it will get bored and new pistons, I was gonna take parts off my donor tractor but decided to just overhaul this one
 

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