haggis Posted March 4, 2018 Report Share Posted March 4, 2018 Hi everyone, I seem to be replacing rubber ‘o’ Rings from the brass adjustable jet on the bottom of a stromberg on a regular basis, as they just keep leaking. I have a couple of spare carbs and have checked them all and the adjustable jet seems too loose in the brass jet holder and moves around a bit in all of them, is this normal? I’m assuming these things can’t really wear as the tolerance is in the ‘O’ ring. It’s not leaking from the brass jet holder/ float chamber housing ( the big O ring) always on the adjustable jet. Any ideas how to stop it leaking? I’ve looked at all the usual suppliers but can’t find replacement jet holders, Can you buy new ones somewhere? Thanks as always. Hag Link to comment Share on other sites More sharing options...
Guest Posted March 4, 2018 Report Share Posted March 4, 2018 Hello Hag. Have you spoken with Burlen and is it this you are looking for ?? http://zenithcarb.co.uk/jets.html Regards. Richard. Link to comment Share on other sites More sharing options...
haggis Posted March 4, 2018 Author Report Share Posted March 4, 2018 Hi Richard, not heard of them, it’s not the part I think, it’s the bigger brass item that the jet goes into. Ill take a look at Burlen though, thanks. Hag Link to comment Share on other sites More sharing options...
haggis Posted March 5, 2018 Author Report Share Posted March 5, 2018 I found this at southern carburettors, http://www.southerncarbs.co.uk/onlineshopproducts_53353/prod_1990850-175-CD-Stromberg-Conversion-Kit.html but does anyone know if 175 parts are compatible with 150’s thanks hag Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 5, 2018 Report Share Posted March 5, 2018 Its normal for the jet to be a bit of a slack fit in the jet holder, I suspect you have been sold some mickey mouse O rings , , many are a minimal fit , where did you get them from?? Try some from burlen or carb exchange They are a special size , you wont find one in a universal box or Os from anywhere. Pete Link to comment Share on other sites More sharing options...
haggis Posted March 5, 2018 Author Report Share Posted March 5, 2018 Hi Pete, well initially I bought some from Rimmers but they worse, so went to Canley in the end, better but don’t seem to last long. Should they be slack enough to be really easily turned? I assumed they need at least need a bit of grip to keep them in position? Thanks hag Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 5, 2018 Report Share Posted March 5, 2018 yes there should be some degree of grip or ...it leaks stiff enough to turn by hand with a penny etc. try a bead of hylomar or similar around the O , allows a turn and doesnt fully set may give you some relief ive had O's in kits that are too small a section , think its a copy , well its round sort of spec made for petrol...Nooooo !!! give burlen a call Pete Link to comment Share on other sites More sharing options...
haggis Posted March 6, 2018 Author Report Share Posted March 6, 2018 Hi, placed an order with Burlen, not sure 4 tiny ‘O’ rings should cost £3.95 to send though! I’ll give them a try and fingers crossed it cures the problem. Thanks for all your help hag Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 6, 2018 Report Share Posted March 6, 2018 lets us know if they work, there cnt be any wear in the jet carrier or .jet barrel as theres little movement other than when turning to adjust the jet, do check for any corrosion inside the carrier which migh wreck 0 rings i always add a smear of grease on reassembly of the jet assy. and chamber O rings Pete Link to comment Share on other sites More sharing options...
Colin Lindsay Posted March 6, 2018 Report Share Posted March 6, 2018 On 3/5/2018 at 8:05 AM, Pete Lewis said: They are a special size , you wont find one in a universal box or Os from anywhere. Pete I may be getting mixed up with something else but were the carb rings not originally supplied from the factory as more of an oval and therefore sat out further around the circumference, but all we can get these days is round, so it's not the best replacement? I'm talking about the cross section, rather than the shape! You're right in that standard O rings from a selection are never the best fit, so I agree you'll have to go to a specialist for the better ones. Link to comment Share on other sites More sharing options...
haggis Posted March 27, 2018 Author Report Share Posted March 27, 2018 Just a little update, Burlen o rings fit a treat, no wobble & no fuel leaking. ?? Thanks hag. Link to comment Share on other sites More sharing options...
dave.vitesse Posted March 27, 2018 Report Share Posted March 27, 2018 Applying a small amount of rubber grease to the O rings and the working surfaces helps to stop the O rings from sticking and rucking up. Dave Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 27, 2018 Report Share Posted March 27, 2018 Dave ..... rubber grease !!!! Youre on the wrong forum again Hag, Good to know the right rings solves your leaks Pete 1 Link to comment Share on other sites More sharing options...
Guest Posted March 27, 2018 Report Share Posted March 27, 2018 On 06/03/2018 at 1:20 PM, haggis said: Hi, placed an order with Burlen, not sure 4 tiny ‘O’ rings should cost £3.95 to send though! Hello Hag. Great to hear the O rings have done the job, I have to say Burlen are very good and very helpful. I know what you mean about p&p - it really is a subjective situation; I have certainly known other companies charge more for such items. Many companies do not deal with weight & size, just a standard tariff for many items. I usually console myself by accepting it would cost far more in fuel to collect items and when something works as it has done for you then it really fades from memory. Dave's tip on the rubber grease is sound and additionally it prevents the rubber from perishing quicker than it should, so that has to be a good thing. Overall, a job well done with a positive outcome. Well done. Regards. Richard, Link to comment Share on other sites More sharing options...
dave.vitesse Posted March 28, 2018 Report Share Posted March 28, 2018 The problem with finding the correct O rings for any application is there are a number of different standards in use. e.g. Imperial, US, Metric and Plumbers. I know its dangerous include the last one as it may invoke a response from Doug or Pete. Dave 1 Link to comment Share on other sites More sharing options...
dougbgt6 Posted March 28, 2018 Report Share Posted March 28, 2018 Dave, Plumber's O ring. Let me think. Nope, can't make anything out of that. Doug 1 Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 28, 2018 Report Share Posted March 28, 2018 your not trying,, we can discuss them at twiddle day 2 may 20th pete Link to comment Share on other sites More sharing options...
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