Hogie Posted October 10, 2018 Share Posted October 10, 2018 Hi Folks, I'm in the process of trying to stop/reduce oil leaks in my TR4A GB. The main concern at the moment are the the selector rods. I have replaced the O rings - no joy I have fitted Q seals - no joy. Today I spotted a top cover that had a plate screwed to the top surface. This plate, I believe, would allow access into the rear hollow section of the top cover. Does anybody know why it is there. It may be for a saloon or late TR6 This hollow cavity may allow a solution to my leak. Roger Quote Link to comment Share on other sites More sharing options...
nang Posted October 10, 2018 Share Posted October 10, 2018 Is the gearbox breather clear? Tony. Quote Link to comment Share on other sites More sharing options...
Hogie Posted October 10, 2018 Author Share Posted October 10, 2018 Hi Tony, it has the OD breather and a 1/8" hole in the top cover that I did a couple of years back. I have been playing with the seals this PM. I have made some packing washers to hold the Q seals hard in place. And have sealed them in with silicon Gasket Goo. The plate on top of the cover is a mystery and may come in handy for more seals. I wonder how many I can get in there. Roger Quote Link to comment Share on other sites More sharing options...
nang Posted October 11, 2018 Share Posted October 11, 2018 I don't suppose that you have too much oil in it. Tony. Quote Link to comment Share on other sites More sharing options...
Hogie Posted October 11, 2018 Author Share Posted October 11, 2018 Hi Tony, have you seen my oil leaks. Too much oil never happens. The oil only ever max's out when dribbling from the filler hole on level ground. I've just had this crackers idea - applying positive pressure air to the hollow cavity in the top cover just forward of the selector rod seals (where the mystery plate could fit!!). But that is daft Roger Quote Link to comment Share on other sites More sharing options...
Hogie Posted October 12, 2018 Author Share Posted October 12, 2018 Hi Folks, I have just found out (a- by making a hole and looking & B - someone else had a look.) The there is nothing other than the selector rods in the cavity. So mystery solved. New mystery - why did they make a hole and put a plate on it. Roger Quote Link to comment Share on other sites More sharing options...
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