johny Posted September 4, 2023 Report Share Posted September 4, 2023 yes thats correct IF you dont reset the float to its 18mm, something which I think is essential as it affects the operation of the jet... Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 5, 2023 Report Share Posted September 5, 2023 and as for Triumph manuals giving odd clues strombergs always used an alloy sealing washer never a fibre one and if some plonker wants to suggest in a manual then they should back that up with a dimension for the thickness to a design /engineered tolerance the 18mm is as we have said achievable by bending the float arm long live the basics !!!! they work Pete 1 Link to comment Share on other sites More sharing options...
daverclasper Posted September 5, 2023 Report Share Posted September 5, 2023 Out of interest, I can't see how, but does float height go out of adjustment in normal use? Link to comment Share on other sites More sharing options...
johny Posted September 5, 2023 Report Share Posted September 5, 2023 Pretty limited Dave. The valve seat might bed in a bit over time, the float arm bend a little with constantly operating the valve or its pivot wear some but otherwise there shouldnt be much change... Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 5, 2023 Report Share Posted September 5, 2023 Dave i think you have your worry hat on Pete Link to comment Share on other sites More sharing options...
dougbgt6 Posted September 5, 2023 Report Share Posted September 5, 2023 The dread rubber slivers sneak through the needle valves and congregate on the float arms, being rubber they cause the float arms to bounce against the needle valve and bend every time they do it. I reckon they need resetting every 3000 miles. Doug 1 Link to comment Share on other sites More sharing options...
daverclasper Posted September 5, 2023 Report Share Posted September 5, 2023 Thanks johny, Pete and Doug. Yes Pete, probably over worrying. Car running really well and have not touched/messed with carbs for ages. But, I had to mess! and took plug out to have a look at colour. 1,3,4,6, pretty normal. No 2 very sooty, no 5 white. this was after about the last 4 miles of slow traffic/idling, after a good M way run. Got a few ideas to investigate first, though was idly wondering about float height (though that would affect all the cylinder's fed from that particular carb anyway, I assume)? Would be very happy to hear that I'm probably worrying about nothing. PLEASE! Link to comment Share on other sites More sharing options...
johny Posted September 6, 2023 Report Share Posted September 6, 2023 If youre confident all other adjustments are correct how do the carbs respond to their mixture test plungers being operated? Is the result exactly the same on both? Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 6, 2023 Report Share Posted September 6, 2023 fuel heights will affect how each carb fuels but if its running ok some variance in plug colour/sooting on an odd plug is more likely down to the sparks and the conditions of combustion /valves /rings/guides./dizzy/breathers etc dont read all the waffle we put on here as a doctors almanac or you get all the problems self inflicted Ha !! sleep easy Pete Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 6, 2023 Report Share Posted September 6, 2023 the problem with using fibre washers on either make of carb is the small contact area and the thing needs to be quite tight so fibre has a good chance of just splitting hence why alloy is much preferred Pete Link to comment Share on other sites More sharing options...
Roger Posted September 9, 2023 Author Report Share Posted September 9, 2023 Well the flooding is finally sorted! I DID find some tiny rubber slivers last time I took them apart. I had to use a magnifying glass to find them they where extremely small, but I guess they don't have to be big in order to cause problems. I have quite a lot of jets, both used ones taken from old carbs that I bought and newish ones from carb kits. I read somewhere that it might improve things if you tap the tip of the jet with a small hammer, and some people suggest to lap the jets by turning the tip and use a slightly abrasive paste of some sort. I have tried both, but unfortunately I have poor traceability regarding which jets I have been "improving" and which I have not touched. It is quite possible that I have "mended them to destruction" by doing this, and the jets I that tried this time where ok. The only thing I haven't toched at all is the pump and the pressure regulator (2,2 PSI at carb). I guess I will never know the true root cause, but as long as they don't flood I can live with that uncertainty... Thanks all for your help. Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 9, 2023 Report Share Posted September 9, 2023 pleased you have some solution and not knowing why or what is all part of the fun many have bag fulls of used /unused replacements kept for the "what if" and never use them all. its a trait of it may be useful one day be it needle valves or odd bits of wood glad you have got the smile back Pete 1 Link to comment Share on other sites More sharing options...
johny Posted September 9, 2023 Report Share Posted September 9, 2023 24 minutes ago, Roger said: Well the flooding is finally sorted! I DID find some tiny rubber slivers last time I took them apart. I had to use a magnifying glass to find them they where extremely small, but I guess they don't have to be big in order to cause problems. I have quite a lot of jets, both used ones taken from old carbs that I bought and newish ones from carb kits. I read somewhere that it might improve things if you tap the tip of the jet with a small hammer, and some people suggest to lap the jets by turning the tip and use a slightly abrasive paste of some sort. I have tried both, but unfortunately I have poor traceability regarding which jets I have been "improving" and which I have not touched. It is quite possible that I have "mended them to destruction" by doing this, and the jets I that tried this time where ok. The only thing I haven't toched at all is the pump and the pressure regulator (2,2 PSI at carb). I guess I will never know the true root cause, but as long as they don't flood I can live with that uncertainty... Thanks all for your help. One thing Roger, are you talking about the float valves when you say jets? As Im sure you know, the jets are the tubes where the needles slide to control the amount of fuel delivered to the air being drawn into the engine👍 Glad problem solved but Im not sure about those tricks for 'improving' float valves😁 Link to comment Share on other sites More sharing options...
Roger Posted September 9, 2023 Author Report Share Posted September 9, 2023 1 hour ago, johny said: are you talking about the float valves when you say jets? It must be obvious to anyone reading my posts that English is not my first language. I use some weird expressions. I frequently have to Google to find out the correct name for the part. However, using the "correct" term can sometimes cause confusion on forums until I found out the equivalent slang word used by everyone exept me 🙂 Thanks for correcting me Johny. I'm not offended in any way when people do that. On the contary it helps a lot when I try to improve my English and reduce my lingual handicap. The better I can explain the problem, the better support I get. Can someone explain to me why the float valves below are called a JET in the ad? Link to comment Share on other sites More sharing options...
dougbgt6 Posted September 9, 2023 Report Share Posted September 9, 2023 I'm English, well, half English half Scots, I often call 'em jets. I once got into trouble for calling those pistony things in my rear brake drums slave cylinders. They're brake cylinders! and I should jolly well call them by their name. Doug 1 Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 9, 2023 Report Share Posted September 9, 2023 1 hour ago, Roger said: explain to me why the float valves below are called a JET in the ad? must be the dreaded fibre washer thats it all a bit like my typing 3000 letters a minute if you want it in words about 25 seems right Ha! I wouldnt worry we all get the gist of whatever is said ...with a pinch of salt as they say sorry you have jet lag !!!! Pete 1 Link to comment Share on other sites More sharing options...
Roger Posted September 9, 2023 Author Report Share Posted September 9, 2023 5 minutes ago, Pete Lewis said: sorry you have jet lag The ferry to Sweden takes two hours and we have one hour time difference to Stockholm. We call it the ferry lag. Link to comment Share on other sites More sharing options...
johny Posted September 9, 2023 Report Share Posted September 9, 2023 2 hours ago, Roger said: 🙂Can someone explain to me why the float valves below are called a JET in the ad? Ha, you already know English is set up to confuse people! In this case I can only think Gross Jet is just their marketing name but its definitely a valve of some sort... Link to comment Share on other sites More sharing options...
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