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Discussion Forum
:

Advisable to re-torque head?

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David A

02-08-2001 07:22:49




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My Super A has some oil seepage at the head gasket. It's not causing any operational problem, I just like to keep a clean engine.
Should I try to re-torque the head before going into more work? I'd hate to crack something or strip a head bolt and cause big trouble. Thanks




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David A, torque spec?

02-09-2001 05:53:35




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 Re: Advisable to re-torque head? in reply to David A, 02-08-2001 07:22:49  
Thank you all for your thoughts on this. After considering all, my plan is to carefully take a torque wrench to it and see if any are way loose. If they are close, I'll leave it.

By the way, I should have asked originally, what's the torque spec for a C113 engine? I have some A books, and many 140 books, but I've not seen a torque table.
Thanks



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REA

02-08-2001 14:37:34




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 Re: Advisable to re-torque head? in reply to David A, 02-08-2001 07:22:49  
Hi David: I can't see why another 5-10 lbs torque wouldn't be alright. Like Wardner said it may have loosen up through the years? You can get a good idea what is happen when you get the valve cover off. If the studs look good re-torque it. Just re-torque to the manual. Bob



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Red Dave

02-08-2001 08:15:38




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 Re: Advisable to re-torque head? in reply to David A, 02-08-2001 07:22:49  
Has the head been off recently? If the head hasn't been disturbed, and just started leaking on it's own, after being OK for a number of years then I'm skeptical retorqueing is the answer. If however, the head was off then I'd think retorqueing after a few heat up/cool down cycles is a good idea. If you don't go over factory specs on the torque and follow the recommended tightening order it shouldn't break anything.

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Wardner

02-08-2001 09:52:30




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 Re: Re: Advisable to re-torque head? in reply to Red Dave, 02-08-2001 08:15:38  
FWIW I retorqued the heads on my IH 6.9 diesel after 105,000 miles. I added 10 lbs to the specified torque prior to adding a Hypermax turbo.



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Wardner

02-08-2001 10:49:39




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 Re: Re: Re: Advisable to re-torque head? in reply to Wardner, 02-08-2001 09:52:30  
I forgot to mention that I also retorqued the head on a newly purchased 400. There were no leaks but the headbolts were loose. The engine has never been apart but the headbolts all needed about 1/2 turn.



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David A

02-08-2001 08:26:34




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 Re: Re: Advisable to re-torque head? in reply to Red Dave, 02-08-2001 08:15:38  
Red Dave and F14,
The head has not been off for at least 35 years. I bought this tractor last Nov. It's been seeping for awhile from all the crude accumulated. After getting things clean I can see it's coming from the head seam and not the valve cover. Just enough to slightly dampen the seam on the manifold side, a little more on the plug side. No evidence of water in the oil or oil in the water.

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Red Dave

02-08-2001 08:37:56




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 Re: Re: Re: Advisable to re-torque head? in reply to David A, 02-08-2001 08:26:34  
David, I agree F14 on this. If that head has been on for 35 years, I'd be hesitant to get on it and start cranking. There are a few really good, experienced guys on here and I'm interested in hearing what they think too.



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F14

02-08-2001 08:14:49




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 Re: Advisable to re-torque head? in reply to David A, 02-08-2001 07:22:49  
Are you sure it's coming from the head gasket? Could it be coming from the valve cover?

I'd be hesitant to mess with the headbolts on it unless the head has been off recently. If it hasn't been touched for 40 years, I'd be afraid it would make the situation worse.

Then again, I'm not enough of a mechanic to be sure. It'll be interesting to see the comments from the professional wrench-heads.

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David A

02-08-2001 08:27:49




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 Re: Re: Advisable to re-torque head? in reply to F14, 02-08-2001 08:14:49  
F14, Thanks. See above under Red Dave.



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