The Ford Barn

jg61hawk · 04-29-2022, 06:33 PM

I posted previously about removing the head on a old guys car...
https://www.fordbarn.com/forum/showthread.php?t=312505

4 studs came out with the nuts. We ordered all new studs. My plan is to replace ONLY the ones that came out. I can also use the old ones. The questions are:

Do the studs have a torque value...or just double nut and tighten?

Is there a problem mixing old and new studs?

Any other comments are welcome.

old ugly · 04-29-2022, 08:23 PM

i feel lucky if a stud comes out when trying to remove the nuts. it makes it easier to remove the head.
i reuse the studs if they are in good shape. not rusted or pitted from rust. if the treads are good. if there is no twist to the stud. no galling from the stud remover. you have to be comfortable with them not breaking when you torque down the head.

i like to screw the stud in as deep as it will go, usually about the full the length of the course threads, and only snug. i like to think that i can easily remove the stud if needed. i don't toque or tighten the head studs down super tight.
that is what i do but i don't know what the rule is.

there is nothing wrong with changing them all but millions of them have been reused successfully.

so if in doubt change them out.

just my opinion. and stuff that works for me.

burner31 · 04-29-2022, 08:30 PM

Just my opinion, but I would pull them all, change them all...since you have them
Just snug them them down, no torque

old ugly · 04-29-2022, 08:50 PM

no problem with mixing old with new.
to ad to what i said you don't need to remove all the studs unless you are boring the engine or if there is an issue with the existing studs . but if you decide you want a new set in there be careful you don't break them trying to remove them.
inspect them to make sure they are sound if leaving them.
it is not a lot of fun removing broken studs

sometimes its better to leave sleeping dogs lay.

1931 flamingo · 04-30-2022, 08:21 AM

55 lbs in 2-3 sequences, probably re-check in a 100 ,miles.
Paul in CT

Phil Brown · 04-30-2022, 12:09 PM

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I would change all of the old studs out because you have them and they should all pull-up or streach the same when you torque the head on. DO NOT torque the studs into the block Thats a great way to crack the block at the stud hole because your only getting tight due to bottoming in the hole or running out of thread. I run them to full thread (by hand) then back off 1/2 turn. When you torque the head nuts it pulls the stud straight up to tighten, not a rotation to tighten the threads.
A little anti-seze on the block side stud threads and the next guy doing the work will be your new best freind.

old31 · 05-01-2022, 07:48 AM

I am with Phil on this 100%.

That is what I always do.

GRutter · 05-01-2022, 07:53 AM

You "could" re-use the studs, but I wouldn't. And ALWAYS change the nuts.

04-29-2022, 06:33 PM	#1
jg61hawk Senior Member Join Date: Oct 2014 Location: Central New Jersey Posts: 428	Head Studs..Question I posted previously about removing the head on a old guys car... https://www.fordbarn.com/forum/showthread.php?t=312505 4 studs came out with the nuts. We ordered all new studs. My plan is to replace ONLY the ones that came out. I can also use the old ones. The questions are: Do the studs have a torque value...or just double nut and tighten? Is there a problem mixing old and new studs? Any other comments are welcome.

04-29-2022, 08:23 PM	#2
old ugly Senior Member Join Date: Aug 2021 Location: alberta canada Posts: 607	Re: Head Studs..Question i feel lucky if a stud comes out when trying to remove the nuts. it makes it easier to remove the head. i reuse the studs if they are in good shape. not rusted or pitted from rust. if the treads are good. if there is no twist to the stud. no galling from the stud remover. you have to be comfortable with them not breaking when you torque down the head. i like to screw the stud in as deep as it will go, usually about the full the length of the course threads, and only snug. i like to think that i can easily remove the stud if needed. i don't toque or tighten the head studs down super tight. that is what i do but i don't know what the rule is. there is nothing wrong with changing them all but millions of them have been reused successfully. so if in doubt change them out. just my opinion. and stuff that works for me. __________________ old ugly my mom would have told me. "these things are here to test us"

04-29-2022, 08:30 PM	#3
burner31 Senior Member Join Date: Dec 2014 Location: Shawnee, Ok Posts: 3,479	Re: Head Studs..Question Just my opinion, but I would pull them all, change them all...since you have them Just snug them them down, no torque __________________ Keith Shawnee OK '31 SW 160-B

04-29-2022, 08:50 PM	#4
old ugly Senior Member Join Date: Aug 2021 Location: alberta canada Posts: 607	Re: Head Studs..Question no problem with mixing old with new. to ad to what i said you don't need to remove all the studs unless you are boring the engine or if there is an issue with the existing studs . but if you decide you want a new set in there be careful you don't break them trying to remove them. inspect them to make sure they are sound if leaving them. it is not a lot of fun removing broken studs sometimes its better to leave sleeping dogs lay. __________________ old ugly my mom would have told me. "these things are here to test us"

04-30-2022, 08:21 AM	#5
1931 flamingo Senior Member Join Date: May 2010 Location: new britain,ct 06052 Posts: 9,428	Re: Head Studs..Question 55 lbs in 2-3 sequences, probably re-check in a 100 ,miles. Paul in CT

04-30-2022, 12:09 PM	#6
Phil Brown Senior Member Join Date: May 2010 Location: Santee Calif. Posts: 638	Re: Head Studs..Question Sponsored Links (Register now to hide all advertisements) I would change all of the old studs out because you have them and they should all pull-up or streach the same when you torque the head on. DO NOT torque the studs into the block Thats a great way to crack the block at the stud hole because your only getting tight due to bottoming in the hole or running out of thread. I run them to full thread (by hand) then back off 1/2 turn. When you torque the head nuts it pulls the stud straight up to tighten, not a rotation to tighten the threads. A little anti-seze on the block side stud threads and the next guy doing the work will be your new best freind.

05-01-2022, 07:48 AM	#7
old31 Senior Member Join Date: Jan 2016 Posts: 2,460	Re: Head Studs..Question I am with Phil on this 100%. That is what I always do.

05-01-2022, 07:53 AM	#8
GRutter Senior Member Join Date: Sep 2017 Location: Mint Hill, North Carolina Posts: 386	Re: Head Studs..Question You "could" re-use the studs, but I wouldn't. And ALWAYS change the nuts.