james christie Posted October 13, 2017 Report Share Posted October 13, 2017 I have been waging war on leaks of any fluid on my 3A and have been working my way forward from the rear axle, to the gear box and am now starting on the engine block. The block breather is only an "interference" fit, metal to metal and pi**es oil out. Has anybody got an oiltight (modern) solution ? James Quote Link to post Share on other sites
RogerH Posted October 13, 2017 Report Share Posted October 13, 2017 Hi James , is it not possible to remove the pipe, wipe sealant around it and re-insert. Roger Quote Link to post Share on other sites
Fireman049 Posted October 13, 2017 Report Share Posted October 13, 2017 +1 Tom. Quote Link to post Share on other sites
Motorsport Mickey Posted October 13, 2017 Report Share Posted October 13, 2017 +2 PTFE tape wrapped around to whatever thickness you need. Mick Richards Quote Link to post Share on other sites
james christie Posted October 13, 2017 Author Report Share Posted October 13, 2017 Thanks for your interest in my problem. Mick, I should have said that the block is in situ, so I'm not sure that there is enough wiggle room between it and the chassis to get it back in with the ptfe tape in one piece. Roger & Tom What sealant are you guys using? James Quote Link to post Share on other sites
RogerH Posted October 13, 2017 Report Share Posted October 13, 2017 Hi James, Hylomar or similar. If you can't remove the pipe then scrupulously clean/degrease the pipe and the area of the block around the hole and use a bead of silicon adhesive/sealant. This will last for a year or two Roger Quote Link to post Share on other sites
Fireman049 Posted October 13, 2017 Report Share Posted October 13, 2017 Hi James ~ I'm not using any sealant. I was able to remove my vent pipe and refit it with the engine in situ. You should thoroughly clean the pipe while it's off the engine. You'd be surprised the amount of gunge it collects. Tom. Quote Link to post Share on other sites
Hamish Posted October 13, 2017 Report Share Posted October 13, 2017 Mine was only a push fit accessed in situ But the upside down u bend had been cut off. I just have about 9" vertices pipe. It's damn nearly the same size a plummets 28mm copper pipe. I used a gasket sealant to seal it to the block when I was fitting the oil breather catch tank. It's an open system so shouldn't be under pressure. Quote Link to post Share on other sites
james christie Posted October 13, 2017 Author Report Share Posted October 13, 2017 The breather is out on the bench and bootifully clean. I suspect that capillary action draws the oil out to leak between pipe and block. As Hamish says there is no pressure - well there shouldn't be! James Quote Link to post Share on other sites
Motorsport Mickey Posted October 13, 2017 Report Share Posted October 13, 2017 "The breather is out on the bench" Should be able to get a couple of winds of PTFE on it then, easy fix. Mick Richards Quote Link to post Share on other sites
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