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heybusdriver
Long Time User
Joined: 25 Nov 2000
Posts: 817
Location: Surrey B.C. Canada
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 Posted: Tue Jan 15, 2013 10:10 am Post subject: head studs |
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I've never had to deal with head studs before only head bolts, I'm going to be replacing my head gasket , only being able to work on it a few minutes at a time due to the cold weather. On my head bolts , I've never used anything just put them on and torqued them down and then re-torqued after getting hot. Is there anything different I should do with the studs? What about putting never seize on the studs, would that be advisable or not?
I want to get this thing done ASAP , to get it out of my hair. I've got other work I want to get done on my loader tractor , i.e. put in new axle pin , radius rods , spindle bearings and before putting the loader back on, check growling transmission bearing.
Stan
9N 222933
2N with 8N motor 8N345567
8N 146710
8N 179555
8N 197904
8N 199000
8N 254079
8N 362039
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souNdguy
Tractor Guru
Joined: 20 Aug 2002
Posts: 47815
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| Posted: Tue Jan 15, 2013 11:08 am Post subject: Re: head studs |
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as a general rule.. studs and bolts that go into dry / blind holes, .. i put in dry.
studs and bolts that go into water jackets.. i put on with thread pucky.
studs that hold nuts in hot place like the manifold.. I like to use neverseize to help out the next guy.. who may be me :)
head gasket on an N only takes minutes.. so shouldn't be a time issue.. 
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ZANE
Tractor Guru
Joined: 10 Aug 1998
Posts: 9915
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| Posted: Tue Jan 15, 2013 11:24 am Post subject: Re: head studs |
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The torque for the nuts and the bolts on the head retainers are differnet. Lot less torque for the nuts because they are fine threads.
I don't know the torques or the difference but I do know they are different and it is very important not to overtorque the nuts especially.
Maybe somebody will chime in and give the torque specfications.
Zane
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JCinKY
Regular
Joined: 01 Aug 2012
Posts: 287
Location: Glendale KY
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| Posted: Tue Jan 15, 2013 12:59 pm Post subject: Re: head studs |
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| ZANE wrote: | (quoted from post at 12:24:40 01/15/13) The torque for the nuts and the bolts on the head retainers are differnet. Lot less torque for the nuts because they are fine threads.
I don't know the torques or the difference but I do know they are different and it is very important not to overtorque the nuts especially.
Maybe somebody will chime in and give the torque specfications.
Zane |
I believe head stud nut torque is 45-55. While head bolt torque is 60-75. All my head bolts went into water jacket, used anti-sieze in good proportion. No leaks whatsoever...yet.
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old
Tractor Guru
Joined: 12 Mar 2000
Posts: 50449
Location: Lake of the Ozarks area of MO
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| Posted: Tue Jan 15, 2013 1:14 pm Post subject: Re: head studs |
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As per the I-T FO-4 manual torque spec is 50-55lbs/ft on nuts and 65-70 on cap screws as per paragraph 21. Such question is why I keep a pile of manuals on my desk
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souNdguy
Tractor Guru
Joined: 20 Aug 2002
Posts: 47815
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| Posted: Tue Jan 15, 2013 3:38 pm Post subject: Re: head studs |
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yer corner bolts were wet?
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Hobo,NC
Tractor Guru
Joined: 14 Jun 2007
Posts: 10611
Location: Sanford, NC
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| Posted: Tue Jan 15, 2013 6:01 pm Post subject: Re: head studs |
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| JCinKY wrote: | (quoted from post at 00:59:17 01/16/13) | ZANE wrote: | (quoted from post at 12:24:40 01/15/13) The torque for the nuts and the bolts on the head retainers are differnet. Lot less torque for the nuts because they are fine threads.
I don't know the torques or the difference but I do know they are different and it is very important not to overtorque the nuts especially.
Maybe somebody will chime in and give the torque specfications.
Zane |
I believe head stud nut torque is 45-55. While head bolt torque is 60-75. All my head bolts went into water jacket, used anti-seize in good proportion. No leaks whatsoever...yet. |
anti-seize on a head bolt 
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JCinKY
Regular
Joined: 01 Aug 2012
Posts: 287
Location: Glendale KY
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| Posted: Wed Jan 16, 2013 9:37 am Post subject: Re: head studs |
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Apologies...corners were dry all others were wet. I did use anti-seize on the head bolts since I had it laying around. Did not want to drive the 30 minutes to town; its thick, sealed em up, and will be easy to remove next time.
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JMOR
Tractor Guru
Joined: 13 Aug 2007
Posts: 12674
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| Posted: Wed Jan 16, 2013 2:05 pm Post subject: Re: head studs |
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| JCinKY wrote: | | (quoted from post at 13:37:58 01/16/13) Apologies...corners were dry all others were wet. I did use anti-seize on the head bolts since I had it laying around. Did not want to drive the 30 minutes to town; its thick, sealed em up, and will be easy to remove next time. |
Not to worry.........scanning the archives will turn up posting reporting the number of 'blind' holes from 0, 1,2,3, to 7. And now since your head has 4 'corners', the future search will reveal 0, 1, 2, 3, 4, 7!!!!
Just like the Internet...find any answer you are looking for. 
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