John McCormack Posted January 20, 2019 Report Share Posted January 20, 2019 I have just fitted a second Moss radiator drain plug which also leaks around the shaft. Anybody got a solution apart from fitting a bolt into the drain hole? Quote Link to post Share on other sites
ianc Posted January 20, 2019 Report Share Posted January 20, 2019 When you say "around the shaft", do you mean that coolant is getting along the thread of the plug? If so, PTFE tape (or from a tube) or Boss White should provide a seal. If it's leaking through the tap itself, dismantle and lap the parts together using very fine grinding compound. Even Brasso might do the job. Ian Cornish Quote Link to post Share on other sites
Ian Vincent Posted January 20, 2019 Report Share Posted January 20, 2019 Buy a tap from a marine chandlers. Better quality and modern materials. Rgds Ian Quote Link to post Share on other sites
RogerH Posted January 20, 2019 Report Share Posted January 20, 2019 Hi John, are you referring to#62 on here https://www.moss-europe.co.uk/shop-by-model/triumph/tr2-4a/cooling-system/radiators-hoses-fittings/radiator-fittings-tr2-4a.html They appear to be notorious for leaking. Most work but too many don;t. You could try, as Ian, said. Dismantle and lap it together. Or as Ian (the other one) said at a chandlers Roger Quote Link to post Share on other sites
Z320 Posted January 20, 2019 Report Share Posted January 20, 2019 I bought my TR4A with #81 on the radiator, that works very well and is always sealed. On the engine I use a modern mini ball valve because #62 was not possible to get sealed. I posted this anywhere at this forum but I will be hard to find because this forum has no wise order, for this case the issue "cooling" (ups, did I write this?) Quote Link to post Share on other sites
RobTR3 Posted January 20, 2019 Report Share Posted January 20, 2019 I recently bought a brass engine drain tap from Moss to replace a gunged up one which I think was the original. The new Moss one was hopeless, it leaked through the shut off valve not the thread. I suspect they source both taps from the same supplier, just another example of poor quality. I cleaned up the original, used some PTFE tape on the thread and no leak! I threw the Moss one in the bin. Rob Quote Link to post Share on other sites
Z320 Posted January 20, 2019 Report Share Posted January 20, 2019 Search "ball AND valve" Quote Link to post Share on other sites
RogerH Posted January 20, 2019 Report Share Posted January 20, 2019 Having googled the part number I have found there are a few variations on the theme. This would indicate different manufacturers. Some have a hexagonal (bar stock) body with the taper tap. Some have a cast body & taper tap. Others have a round (bar stock ) body & taper tap. The common point is the taper tap. I would suggest that the leaky ones have not been bedded in very well or if at all. They all come up in the £10 - 20 range. Perhaps a LandRover or Jag valve may be better off the shelf but I would not guarantee it. https://www.ebay.ie/sch/Engine-Cooling/33599/i.html?_sop=3&_nkw=radiator+drain+valve Roger Quote Link to post Share on other sites
Hamish Posted January 20, 2019 Report Share Posted January 20, 2019 I found with mine if I have had to use it, that is just needed a bit of working ie open and closed repeatedly and the spring stretching a little. But mine is not a new one. Quote Link to post Share on other sites
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