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 Post subject: Re: 'water on the head', no not that one, the cylinder head!
PostPosted: Mon Sep 09, 2019 5:12 am 
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Posts: 58
Location: Kirkby-in-Ashfield, Notts, UK
Incidently, what do you recommend to be the torque setting for the head nuts then? :)

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Chris Blood
TC1472,TC2686,TC4245,D-type D0407


 
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 Post subject: Re: 'water on the head', no not that one, the cylinder head!
PostPosted: Mon Sep 09, 2019 5:24 am 
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Location: Saucier, MS
Chris...all of the torque settings can be found here: http://www.mg-tabc.org/library/torque.htm


 
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 Post subject: Re: 'water on the head', no not that one, the cylinder head!
PostPosted: Mon Sep 09, 2019 10:52 am 
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Location: Southern California
What a mystery we have here. If it were me, I would take the head off and try to find where it was coming from. Perhaps the engine builder would be willing to help with this since he assembled it.

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 Post subject: Re: 'water on the head', no not that one, the cylinder head!
PostPosted: Tue Sep 10, 2019 2:20 am 
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The factory torque recommended for head studs is 50#, which is the limit of the materials they used - fairly soft. Even at that there can be considerable stretch, causing uneven torque.

The ARP head studs I have made and sell, of superior materials and with rolled threads, are torqued to 60#, and are much used on racing engines with high stress. See mgtrepair.net for details.

Tom Lange
MGT Repair


 
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 Post subject: Re: 'water on the head', no not that one, the cylinder head!
PostPosted: Thu Sep 12, 2019 1:02 pm 

Posts: 16
Chris. It is always possible that a piece of crud - or even swarf from the machining - may have fallen out of the head while it was being fitted. I have had this happen and had to clean everything and start again. If I hadn't noticed it then a similar problem might have occurred. Your engine builder may have unfortunately missed something simple like that.

I remember collecting a block from Cotterell engineering in Clay Cross who were supposed to have cleaned it following a rebore. Accidentally, the block tipped over in the back of my car and a pile of scarf fell out. Of course they were sorry but it shouldn't have happened.


 
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 Post subject: Re: 'water on the head', no not that one, the cylinder head!
PostPosted: Fri Sep 13, 2019 11:51 am 
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Location: Kirkby-in-Ashfield, Notts, UK
Hi Ray, good to hear from you. I suspect this wont be the issue as any muck wont cause water to be drawn up ALL 10 head studs.
On a positive note; I have bled the brakes today, greased throughout and sorted the steering to enable me to drive a little more safely out there. I've only gone around about 2 miles slowly but ... I think the problem is reseeding as the engine beds down ... going for a 4-5 mile drive tomorrow. Having not been on the road since late 60's I'll driving with more than a slight trepidation. Oh, and as this is an 'oily-rag' restoration but more like a resurrection!

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 Post subject: Re: 'water on the head', no not that one, the cylinder head!
PostPosted: Sat Sep 14, 2019 10:54 am 
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Location: Kirkby-in-Ashfield, Notts, UK
Just had a thought; thinking about the other forum question about engine differences between TC and TD. Well, I knew my TC1472 had a replacement engine as its stamped on a square plaque stating so. However, I did think it was a TC one but I now realize its not, its a TD so ... is it possible even though I have had a new gaskets, would it be feasible to suggest that a TC head gasket on a TD block/head may create the scenario of water capillary action up the threads?

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 Post subject: Re: 'water on the head', no not that one, the cylinder head!
PostPosted: Sat Sep 14, 2019 11:53 am 
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Posts: 799
Location: Southern California
It would make no difference. The water holes don't come anywhere near the head studs. I suppose if there was a LOT of corrosion then perhaps that could be an issue, but mixing heads and blocks shouldn't have any effect. Here is a photo of a banana hole (TC / early TD) head.


Attachments:
File comment: MG TC Head
tc-head.jpg
tc-head.jpg [ 87.86 KiB | Viewed 14 times ]

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