Malbaby Posted August 1, 2023 Report Share Posted August 1, 2023 (edited) I bought this engine disassembled. The plug in question is between the fuel pump and the oil filter. Am I correct in assuming it is for the oil pressure line attachment. Edited August 1, 2023 by Malbaby Quote Link to post Share on other sites
BlueTR3A-5EKT Posted August 1, 2023 Report Share Posted August 1, 2023 No it is a cross drilled oil way/gallery blanking plug. Item 17 here https://www.moss-europe.co.uk/shop-by-model/triumph/tr5-6/engine/engines-components/external-engine-tr5-6-1967-76.html Pt No PU1404. Item 16 (qty5) is the screwed steel plug that the oil pressure gauge or switch screw into along the main oil gallery. The end surface of the screwed aluminium plug has been peened with a ball pein hammer to seal it to the cast iron. Quote Link to post Share on other sites
Malbaby Posted August 1, 2023 Author Report Share Posted August 1, 2023 14 hours ago, BlueTR3A-5EKT said: No it is a cross drilled oil way/gallery blanking plug. Item 17 here https://www.moss-europe.co.uk/shop-by-model/triumph/tr5-6/engine/engines-components/external-engine-tr5-6-1967-76.html Pt No PU1404. Item 16 (qty5) is the screwed steel plug that the oil pressure gauge or switch screw into along the main oil gallery. The end surface of the screwed aluminium plug has been peened with a ball pein hammer to seal it to the cast iron. Thanks Peter. Quote Link to post Share on other sites
Malbaby Posted August 4, 2023 Author Report Share Posted August 4, 2023 Now have to remove it without getting any material into the gallery. Quote Link to post Share on other sites
PodOne Posted August 5, 2023 Report Share Posted August 5, 2023 Why do you want to remove it the take off for the oil pressure gauge is already there. Have you a modification in mind? Andy Quote Link to post Share on other sites
BlueTR3A-5EKT Posted August 5, 2023 Report Share Posted August 5, 2023 20 hours ago, Malbaby said: Now have to remove it without getting any material into the gallery. Best of luck with that Usual issue is a bit of aluminium dwarf left in the thread. Try dipping it in caustic soda to eat the aluminium away Quote Link to post Share on other sites
Malbaby Posted August 6, 2023 Author Report Share Posted August 6, 2023 (edited) Can anyone please advise on what type and thread size for this hole.... it's for the adaptor insert into the block to take the switch .. Edited August 6, 2023 by Malbaby Quote Link to post Share on other sites
ed_h Posted August 6, 2023 Report Share Posted August 6, 2023 2 hours ago, Malbaby said: Can anyone please advise on what type and thread size for this hole.... it's for the adaptor insert into the block to take the switch .. 3/4-16. Ed Quote Link to post Share on other sites
Mike C Posted August 6, 2023 Report Share Posted August 6, 2023 (edited) 1/8" X 28 BSP taper I believe. Sorry, I was looking at the pressure switch, not the insert. javascrip Edited August 6, 2023 by Mike C Quote Link to post Share on other sites
Malbaby Posted August 6, 2023 Author Report Share Posted August 6, 2023 17 hours ago, ed_h said: 3/4-16. Ed Thanks Ed. Quote Link to post Share on other sites
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