Going to get a new toy

Well I managed to remove leaking plug but it turns out that the hole is threaded, I tried to install a BSP 3/4” plug in the hole but it won’t go in. I believe it might be 1” BSF but I am not sure, does anyone have any knowledge regarding the thread my only other option would be to drill the hole to 26 mm and install a welch plug. The front one is a 26 mm Welch plug so I don’t know if someone in the past made a repair using a bolt or if that is original.Attachment 174364Attachment 174365

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Originally Posted by Gippslander

Well I managed to remove leaking plug but it turns out that the hole is threaded, I tried to install a BSP 3/4” plug in the hole but it won’t go in. I believe it might be 1” BSF but I am not sure, does anyone have any knowledge regarding the thread my only other option would be to drill the hole to 26 mm and install a welsh plug. The front one is a 26 mm welsh plug so I don’t know if someone in the past made a repair using a bolt or if that is original.Attachment 174364Attachment 174365

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From discussions on here in the past I believe it's a BS Conduit thread, the plugs are available.
https://www.aulro.com/afvb/series-i-...2=#post1437672

Oh and it's a Welch plug History of the Welch Plug probably 1" rather than 26mm.


Colin

Yes Conduit Thread. I have had three S1 80" LR's all had plumbing plugs fitted when I bought them. My guess is they taped a new thread to suit the plugs.Attachment 174383 Attachment 174384 Attachment 174385

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Originally Posted by Gippslander

The old girl had a water leak at the rear of the block which I was concerned about so I pulled exhaust manifold off today and while I was there checked exhaust valve clearance. I found two tight one so adjusted them, the internals look a bit carboned up and sludgy in camshaft / valve area but considering the age looks reasonable. The water leak is from a welsh plug at the rear of the block so ordered two new ones as there is one at the front of the block may as well change both now while I can. I have attached a couple of photos the first is of the corroded welsh plug.[biggrin]

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Don't forget to put an old towell or similar on top of your front wing (mudguard ) tops to save what's left of your paint when working uner the bonnet. As others have said, there's plenty of glossy repainted ones around, so look after whats's left of the original paint. Better to spend your $$$ on brakes and steering than paint.
Mike.
5380

I'd also point out that for these F-head engines, you may find it helps to remove the LH mudguard to work on the valve gear, or, as in this case, the manifold. It is not very difficult, and makes the engine work a lot easier.

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Originally Posted by JDNSW

I'd also point out that for these F-head engines, you may find it helps to remove the LH mudguard to work on the valve gear, or, as in this case, the manifold. It is not very difficult, and makes the engine work a lot easier.

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I found that there was plenty of room without removing the mudguard.

https://live.staticflickr.com/4254/3...3d5470e3_z.jpgDSCN2648 by Colin Radley, on Flickr


With the 6-cylinder F-head it's just possible but probably easier if you remove the mudguard.


Colin