Colin Posted June 8, 2022 Report Share Posted June 8, 2022 Chaps, Back from a trip to Geneva, where I was donated an oil pressure gauge (the chap knowning about my oil warning light issue not so long ago). Bought a Rimmer 'T' piece so I can keep the warning light alive, too. Now please refer to the photo. The 'T' piece end of the middle union shown, fits perfectly into the 'T' piece. The nut/pipe assembly (right) that will fit into the flexible hose which leads to the gauge also has that same thread (I have tried it both ways round). However - the nut/pipe assembly (right) will not thread onto the right hand portion of the middle union - it must have a different thread. I have asked Rimmers what thread the 'T' piece has internally - but they can't tell me - so I can't specify which union I need at any other outlet. Can anyone please tell me what thread union I need - or from where to get one, such that I can use this gift? Obviously at the moment, I am being sold complete guage sets, or piping on its own; and that starts another set of questions about which nut & thread is on the the back of the gauge that I'd rather not get into! Cheers as usual, all. Best, Colin. Link to comment Share on other sites More sharing options...
cliff.b Posted June 8, 2022 Report Share Posted June 8, 2022 I thought they were usually the same thread as the oil pressure sender, whatever that is 🤔 Link to comment Share on other sites More sharing options...
Colin Posted June 8, 2022 Author Report Share Posted June 8, 2022 Should be the same/all through the varying joints required, I'd have thought . . . Not in this case! Link to comment Share on other sites More sharing options...
Iain T Posted June 8, 2022 Report Share Posted June 8, 2022 I thought they are all 1/8th NPT my tee piece is. Iain Link to comment Share on other sites More sharing options...
NonMember Posted June 8, 2022 Report Share Posted June 8, 2022 I think the T-piece is 1/8 NPT but the feed to the gauge is usually not. I suspect on modern gauges it's a metric fine but who knows what on an older one. The male-male adapter is supposed to be a thread converter to match it. Link to comment Share on other sites More sharing options...
cliff.b Posted June 8, 2022 Report Share Posted June 8, 2022 1 minute ago, NonMember said: I think the T-piece is 1/8 NPT but the feed to the gauge is usually not. I suspect on modern gauges it's a metric fine but who knows what on an older one. The male-male adapter is supposed to be a thread converter to match it. That makes sense. So what thread is a modern metric car sender? I have looked on eBay & most say M14 X 1.5. Poss worth a try Link to comment Share on other sites More sharing options...
Colin Posted June 8, 2022 Author Report Share Posted June 8, 2022 Thanks chaps. All good suggestions! Non-Member, if by "the feed to the gauge is usually not", you mean the nut right on the back of the gauge, certainly mine is not - it is much smaller. Cheers All. Now - how to find such a union . . . 🤔 Link to comment Share on other sites More sharing options...
cliff.b Posted June 8, 2022 Report Share Posted June 8, 2022 3 minutes ago, Colin said: Thanks chaps. All good suggestions! Non-Member, if by "the feed to the gauge is usually not", you mean the nut right on the back of the gauge, certainly mine is not - it is much smaller. Cheers All. Now - how to find such a union . . . 🤔 If you use eBay there are lots of different combinations of adapters. Found different m & f combinations from 1/8 NPT to M14x 1.5, M16x1.5 & M10x1.0 Just searched on oil pressure gauge adapters Link to comment Share on other sites More sharing options...
Colin Posted June 8, 2022 Author Report Share Posted June 8, 2022 Hi Guys, Thanks for all help. Have ordered one male-to-male 1/8 NPT adaptor from Amazon. Will see tomoz if it is what I need!! Best, C. Link to comment Share on other sites More sharing options...
Iain T Posted June 8, 2022 Report Share Posted June 8, 2022 3 minutes ago, Colin said: Have ordered one male-to-male 1/8 NPT adaptor from Amazon. Will see tomoz if it is what I need!! I never thought I would say this even 10 years ago but isn't Amazon wonderful....next day delivery! Best of luck Colin. Iain Link to comment Share on other sites More sharing options...
Colin Posted June 8, 2022 Author Report Share Posted June 8, 2022 Thanks Iain! 'Though I note the 'nipple' adaptor (as I think they're called), has (on the end I can't connect) a small hole drilled through its cap - which would connect to the pipe connector which fits within its compression nut - pics follow Link to comment Share on other sites More sharing options...
Colin Posted June 8, 2022 Author Report Share Posted June 8, 2022 Suspect the Amazon ordered item won't be reduced with a small hole - but I don't care! Link to comment Share on other sites More sharing options...
Pete Lewis Posted June 9, 2022 Report Share Posted June 9, 2022 club shop sells the Tee adaptor and pipework kit Pete Link to comment Share on other sites More sharing options...
Colin Posted June 9, 2022 Author Report Share Posted June 9, 2022 I did not know that, Pete! Thanks!! Link to comment Share on other sites More sharing options...
Pete Lewis Posted June 9, 2022 Report Share Posted June 9, 2022 page 29 of the parts brochure p no 070.025 £18 Pete Link to comment Share on other sites More sharing options...
Unkel Kunkel Posted June 9, 2022 Report Share Posted June 9, 2022 NPT thread - not a BSP? Link to comment Share on other sites More sharing options...
Peter Truman Posted June 9, 2022 Report Share Posted June 9, 2022 Small hole in T adapter acts as a snubber damping any surging in the instrument. Link to comment Share on other sites More sharing options...
Colin Posted June 9, 2022 Author Report Share Posted June 9, 2022 Thanks Pete, Shan't have that in anything I've ordered - if it arrives today!! Hope not having it won't cause any probs . . . Link to comment Share on other sites More sharing options...
Colin Posted June 9, 2022 Author Report Share Posted June 9, 2022 Unkel - I've ordered NSP (I think). Will let you all know if it's correct . . . (as in, if it fits!) Link to comment Share on other sites More sharing options...
Colin Posted June 9, 2022 Author Report Share Posted June 9, 2022 Thanks for the page number, Pete L. Will invest of the part on order is incorrect! My catalogue is tucked away in the back of a cupboard. Keep forgetting it exists! Link to comment Share on other sites More sharing options...
Pete Lewis Posted June 9, 2022 Report Share Posted June 9, 2022 its online as a pdf download 2021 Shop Catalogue.pdf (tssc.org.uk) Pete Link to comment Share on other sites More sharing options...
Colin Posted June 9, 2022 Author Report Share Posted June 9, 2022 Thanks Pete, Still no arrival of part I've ordered . . . keep you all posted. C. Link to comment Share on other sites More sharing options...
Colin Posted June 10, 2022 Author Report Share Posted June 10, 2022 Just to 'close' this thing off (fitting & correct operation aside), here is the double-ended connector (1/8 NSP) I've been banging on about. I have had to use the nickel plated, brass spacer (I'm glad I ordered), so that the solid pipe to flexible makes a tight seal in its nut. I'll test in the engine bay first - not sure if I'll use any PTFE tape at any of the joints. And, I'll deffo run it via a stout rubber grommet and find a blanking plug tocarry, should anything untoward happen in the future. PS:- I do not need to use the copper eashers shown!! Link to comment Share on other sites More sharing options...
Pete Lewis Posted June 10, 2022 Report Share Posted June 10, 2022 is the gauge supply pipe just a push on fit seems a bit risky for when its hot and it lets go Pete Link to comment Share on other sites More sharing options...
Colin Posted June 10, 2022 Author Report Share Posted June 10, 2022 Pete Lewis - yes, it is! I was thinking of bolstering that push fit with an electrical tie at appropriate junctures (the flexible pipe also seems to have its own push fit connection half way down! Obviously if I leccy tie that, it'd just crush the piping! Unkel Kunkel:- I have just ordered a BSP version for a couple of quid and will advise the fit differences I detect between NSP & BSP. It's all a bit of a learning curve, these connections. Continued thanks, guys. Link to comment Share on other sites More sharing options...
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