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doruk1981



Member Since: 15 Aug 2022
Location: Aargau
Posts: 96
Switzerland 2002 Defender 110 Td5 SW Coniston Green
Head job and Hylomar
Hi,

I've started reassembling the refurbished engine. I checked the manual and the other sources and could not see if we should - or if it is recommended - to use hylomar (or some copper spray) before fitting the head gasket. Logic would dictate no need but I was hoping to take on some knowledge from the experienced TD5 drivers

The use of it between the camshaft carriage and cylinder head I'm aware of, but otherwise I'm not certain.

Thanks Td5 110 Station
Post #996864 19th Jun 2023 3:55pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5423
2006 Defender 110 Td5 USW Zermatt Silver
No. No sealer required. Thumbs Up
Post #996866 19th Jun 2023 4:35pm
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NickMc



Member Since: 01 Oct 2014
Location: Norn Iron
Posts: 1571
Northern Ireland 2006 Defender 90 Td5 HT Bonatti Grey
Re: Head job and Hylomar
doruk1981 wrote:


The use of it between the camshaft carriage and cylinder head I'm aware of, but otherwise I'm not certain.

Thanks


This needs an anaerobic sealer fitted as itโ€™s between two machined surfaces which is basically a cam bearing so nothing with any thickness. It cures in the absence of air.

Something like:


https://www.permatex.com/products/gasketin...ker-50-ml/
Post #996867 19th Jun 2023 4:43pm
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Steve B



Member Since: 22 May 2009
Location: Warwickshire
Posts: 586
United Kingdom 2000 Defender 90 Td5 SW Caledonian Blue
Hello,

I have always used Wellseal for this type of joint, I used it on my TD5 when fitting a new AMC head.

The main reason is you don't want any squeeze out of the sealant that could find its way into the oil galleries.for longevity it never seems to completely dry out. Just paint it on the face for sealing leave a few minutes and assemble.

Have used it with no problems for over 30 years, I was told it was originally developed for aircraft engines during WW2. Still use it on aviation engines to this day ๐Ÿ‘

Edit: On the cam carrier joint not the head gasket joint. 
Post #996907 19th Jun 2023 10:45pm
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