Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Farmall & IHC Tractors Discussion Forum
:

Super C Head Stud Question

Welcome Guest, Log in or Register
Author 
Duane WI

09-08-2006 10:00:14




Report to Moderator

I have been having problems keeping the head gasket from leaking on my Super C. I retorqued the head a year ago and the studs were really loose. It started leaking again this year so I pulled the head to replace the gasket and the studs were loose again. So in addition to a new head gasket I want to replace all of the studs. I went to my Case IH dealer and the price of new studs are $12 each. But his book also listed a head bolt and they are $4 each. It looks like it was done both ways. Is this right? Will the bolts work in place of the studs?

[Log in to Reply]   [No Email]
Andy Martin

09-09-2006 06:14:13




Report to Moderator
 Re: Super C Head Stud Question in reply to Duane WI, 09-08-2006 10:00:14  
Did you retorque after torqueing each time?



[Log in to Reply]  [No Email]
Stan(VA).

09-08-2006 20:50:50




Report to Moderator
 Re: Super C Head Stud Question in reply to Duane WI, 09-08-2006 10:00:14  
I have seen this problem on several motors also, even after re-torquing they still back off. IH switched over from studs to bolts at either the 100/200 or 130/230 tractors(looked this up before but didn't memorize it). The studs are 1/2" dia coarse thread at the block, and fine thread at the nut. You can buy the bolts at the dealer or just buy 1/2" grade 8, hex bolts (seems like either 5 or 6 inches long?) at a hardware store. After removing the studs, clean out the holes with a tap and test the bolt length in each hole to see when the bolt starts to bottom out (with head in place). My experience is that a few would need 1 or 2 flat washers to allow a proper torque w/o bottoming out (the factory ones are an odd length like 5-3/4" rather than 6" commonly available). When you find what's necessary I just use that number of washers on each for consistancy. Last thing is that the flat washers on one of the front bolts (and poss one of the back bolts?) interfere with the valve cover so you need to grind a flat on one side of those washers until they clear.
Hope that helps, Stan(VA).

[Log in to Reply]  [No Email]
rktown

09-08-2006 10:33:41




Report to Moderator
 Re: Super C Head Stud Question in reply to Duane WI, 09-08-2006 10:00:14  
you might also try McMasterCarr, or ARP at a speed shop. The ARP catalog has a discussion concerning bolts vs studs.



[Log in to Reply]  [No Email]
teddy52food

09-08-2006 10:32:35




Report to Moderator
 Re: Super C Head Stud Question in reply to Duane WI, 09-08-2006 10:00:14  
Are you retightening the nuts after warm-up?I have never had any come loose yet. Reset the valves after retorqueing.



[Log in to Reply]  [No Email]
Red Dave

09-08-2006 10:21:46




Report to Moderator
 Re: Super C Head Stud Question in reply to Duane WI, 09-08-2006 10:00:14  
I'm curious, did you use any kind of sealer on the threads when you put the studs into the block, and how many foot/pounds did you torque the head to? I haven't run into a problem with the head studs loosening.



[Log in to Reply]  [No Email]
Duane WI

09-08-2006 10:40:15




Report to Moderator
 Re: Super C Head Stud Question in reply to Red Dave, 09-08-2006 10:21:46  
The first time I had a problem about a year ago I simply retorqed the studs. It hardly took any torque at all to get them moving. I bought this tractor about 6 years ago and it was supposed to have been recently overhauled so I just figured no one had retorqed the head after it got warmed up. The head gasket stopped leaking and everything was fine until a few weeks ago when it started leaking again. So this time I pulled the head and again the studs hardly took any torque to get them moving. Out of the 9 studs I only had to lean on 1 or 2 of them. I would guess that it only took 20 or 30 ft lbs to back most of them off. The studs are still in the block and I don't see any signs that they are working loose from the block. I just fiqured that maybe the studs are streching and getting fatigued. But I sure don't want to spend $108 on new studs if I don't have to. But I also want this to be fixed and done.

[Log in to Reply]  [No Email]
Red Dave

09-08-2006 11:41:11




Report to Moderator
 Re: Super C Head Stud Question in reply to Duane WI, 09-08-2006 10:40:15  
I generaly don't disturb the studs in the block.

I would make sure the threads are clean, even wire brush them and spray with solvent. Then lightly oil them and wipe the oil off with a clean rag. That should be sufficient lubricant. Run the nuts on and off the studs to be sure that there is no binding that would give a false torque reading.

Torque the head to 80 ft/lbs. Start with the center studs and work evenly to the ends. I usually put about half the torque on the first time through, them 3/4 or so, then go to full torque. Install the rocker arm assembly and set the valve lash at .016/.017 cold. Start the tractor and let it warm up thoroughly. Shut it down and as soon as your hands can stand the tempurature, pull the valve cover and rocker arm assembly off and re-torque the head to 80 ft/lbs. Then replace the rocker arm assembly and set the valves at .014 while it is still warm.

Check your head gasket, the last few I've put on have "sealant and re-torque required" stamped right on them.

That's what I do and it seems to be working for me.

Good luck!

[Log in to Reply]  [No Email]
El Toro

09-08-2006 10:20:26




Report to Moderator
 Re: Super C Head Stud Question in reply to Duane WI, 09-08-2006 10:00:14  
You could try Fastenal for new studs. How are the threads in the block? You may need helicoils if the threads are worn. I wouldn't know why you couldn't use bolts, a lot of cars have used them. Hal



[Log in to Reply]  [No Email]
Janicholson

09-08-2006 10:54:06




Report to Moderator
 Re: Super C Head Stud Question in reply to El Toro, 09-08-2006 10:20:26  
The only reason I can think of is that the threads are not the same pitch on the head end of the stud compared to the block end. (if I remember correctly) thus the torque specification Would be different to achieve the same applied bolt stretch. A guess might be 5 to 10% more torque than spec to allow for the course thread. What is your take on it? JimN



[Log in to Reply]  [No Email]
El Toro

09-08-2006 15:25:44




Report to Moderator
 Re: Super C Head Stud Question in reply to Janicholson, 09-08-2006 10:54:06  
My concern would be the threaded tapped holes in the block. The threads may be worn, stretched or stripped and may be a problem when torquing the head. I would take a good look to see if some helicoils are needed. Your figures are probably
close enough.Hal



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy