Chris59 Posted February 8, 2022 Report Share Posted February 8, 2022 Hello guys, I hope you can help : where can I find a chain tensionner washer (item 77 on the drawing, sorry for the poor quality) for a TR4 engine ? It seems to be a very hard steel. Quote Link to post Share on other sites
stuart Posted February 8, 2022 Report Share Posted February 8, 2022 (edited) Item 77 on there is the inner half of the pulley are you sure thats what you want? https://www.moss-europe.co.uk/shop-by-model/triumph/tr2-4a/engine/engines-components/internal-engine-tr2-4a-1953-67.html Sure you didnt mean 15? Stuart. Edited February 8, 2022 by stuart Quote Link to post Share on other sites
Chris59 Posted February 8, 2022 Author Report Share Posted February 8, 2022 (edited) Well spotted Stuart ! I used RB website for my search, where it's item 77, but it's item 15 on Moss website Edited February 8, 2022 by Chris59 Quote Link to post Share on other sites
RogerH Posted February 9, 2022 Report Share Posted February 9, 2022 Hi Chris, I would think a WP18 washer is a standard (not hard as such) washer. There is very little movement at that point to cause wear, although the other end of the spring is pulsing slightly. Roger Quote Link to post Share on other sites
stuart Posted February 9, 2022 Report Share Posted February 9, 2022 If it is really a special which I doubt I may have one here. Stuart. Quote Link to post Share on other sites
Chris59 Posted February 10, 2022 Author Report Share Posted February 10, 2022 Hi Roger and Stuart, Yes, it seems to be a rather hard metal, certainly to resist to the tensionner friction. I need only one at the moment, but it don't seems that easy to find. Quote Link to post Share on other sites
RogerH Posted February 10, 2022 Report Share Posted February 10, 2022 Hi Chris, Moss have them https://www.moss-europe.co.uk/washer-plain-9-32-id-x-1-2-od-wp18.html?assoc=116178 I can't believe it is 'special' or 'Hardened' It's part number is WP18 which suggests W= washer P = plain. Roger Quote Link to post Share on other sites
boxofbits Posted February 10, 2022 Report Share Posted February 10, 2022 This is another site which gives a description of WP18.It is just a plain washer, and looking at its location,I can’t see why it would need to be hardened. https://www.lbcarco.com/parts/washertensioner-324-870.htm Kevin Quote Link to post Share on other sites
Schnippel Posted February 11, 2022 Report Share Posted February 11, 2022 Hi there, be sure to use a hardened washer at the point! The chain tensioner would destroy a normal. Many greetings Ralph Quote Link to post Share on other sites
Charlie D Posted February 11, 2022 Report Share Posted February 11, 2022 10 hours ago, RogerH said: I can't believe it is 'special' or 'Hardened' It's part number is WP18 which suggests W= washer P = plain. If you Google “WP18 washer” you get a few mentions, but they all relate to the tensioner washer asked about (Not just TR, but suitable for MG Midget, Austin Healey Sprite, and Triumph Spitfire) It does not seem to be mentioned for any other use. Maybe… it is special because of the OD being bigger than a normal 9/32” ID washer (1/2” in the case of the WP18) and not because it’s hardened. Anyone got a 9/32” washer hanging around to measure? Charlie Quote Link to post Share on other sites
stuart Posted February 11, 2022 Report Share Posted February 11, 2022 11 hours ago, Chris59 said: Hi Roger and Stuart, Yes, it seems to be a rather hard metal, certainly to resist to the tensionner friction. I need only one at the moment, but it don't seems that easy to find. Chris do you want me to see if I can find the one Im sure is here somewhere and I will send it to you. Stuart. Quote Link to post Share on other sites
BlueTR3A-5EKT Posted February 11, 2022 Report Share Posted February 11, 2022 (edited) Yes WP 018 X is the original fitted item. It was used in this position on all 4 and 6 cyl TR engines. Plus other vehicles. Whether it is hardened I cannot tell from parts listing I do know it is not plated (that is the X suffix) The spec says it is 9/32” I’d. & 1/2” od. So WP 0008 which is 5/16” id washers is a touch sloppy and larger od at 0.690” single WP page follows. Standard Triumph hardware catalogue can be found on Canley Classics site https://www.canleyclassics.com/?catalogue=standard-triumph-hardware-catalogue&diagram=catalogues Edited February 11, 2022 by BlueTR3A-5EKT Quote Link to post Share on other sites
Chris59 Posted February 11, 2022 Author Report Share Posted February 11, 2022 6 hours ago, stuart said: Chris do you want me to see if I can find the one Im sure is here somewhere and I will send it to you. Stuart. Yes please, thanks for the kind offer, Stuart. Thanks Peter for the usefull page, I just realised that "W" was for "washer" Quote Link to post Share on other sites
stuart Posted February 11, 2022 Report Share Posted February 11, 2022 57 minutes ago, Chris59 said: Yes please, thanks for the kind offer, Stuart. Thanks Peter for the usefull page, I just realised that "W" was for "washer" PM me an address then please Chris and I will go digging in the morning. Stuart. Quote Link to post Share on other sites
Chris59 Posted February 12, 2022 Author Report Share Posted February 12, 2022 19 hours ago, stuart said: PM me an address then please Chris and I will go digging in the morning. Stuart. Pm sent, Stuart. Have a nice weekend ! Quote Link to post Share on other sites
stuart Posted February 12, 2022 Report Share Posted February 12, 2022 (edited) So this is definitely the correct one as I’ve just removed it from a scrap block here. Does look judging by the slight wear on the back that it’s done a few miles. Stuart Edited February 12, 2022 by stuart Quote Link to post Share on other sites
Chris59 Posted February 13, 2022 Author Report Share Posted February 13, 2022 Great Stuart, now I'll have a model, and should be able to find someone to test if it's hardened, or not. Quote Link to post Share on other sites
RogerH Posted February 13, 2022 Report Share Posted February 13, 2022 Hi Chris, stroke it with a smooth file. If it is hard the file will glide over the metal. If it is soft the file will cut it. Roger Quote Link to post Share on other sites
BlueTR3A-5EKT Posted February 13, 2022 Report Share Posted February 13, 2022 1 hour ago, RogerH said: Hi Chris, stroke it with a smooth file. If it is hard the file will glide over the metal. If it is soft the file will cut it. Roger We await your testing. Moss offer WP18 for 50 p. Next time you go Roger could you take a file and test one? Quote Link to post Share on other sites
Chris59 Posted February 14, 2022 Author Report Share Posted February 14, 2022 Will do, dear Roger and Peter Quote Link to post Share on other sites
stuart Posted February 14, 2022 Report Share Posted February 14, 2022 30 minutes ago, Chris59 said: Will do, dear Roger and Peter Its in the post Chris Stuart. Quote Link to post Share on other sites
Chris59 Posted February 14, 2022 Author Report Share Posted February 14, 2022 Many thanks dear Stuart ! Quote Link to post Share on other sites
Chris59 Posted March 12, 2022 Author Report Share Posted March 12, 2022 Thanks to Stuart, this washer is now in a smooth running TR4 A IRS engine I tested it with a smooth file : it's less hard than I was thinking, as the file was able to leave a light mark, but it seems to be harder than an average quality washer. To be fair, I'm not a metallurgist Quote Link to post Share on other sites
BlueTR3A-5EKT Posted March 12, 2022 Report Share Posted March 12, 2022 We can make those then…. 1/2” silver steel bar bored to 9/32” Part off at appropriate thickness and harden/temper accordingly. About £3 each….in small batches of 10. Quote Link to post Share on other sites
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