colmiller Posted September 30, 2015 Share Posted September 30, 2015 Months after finding out about the packing pieces under the engine mounts that allow access to the retaining bolts on the air filter I have finally got a new set of mounts fitted correctly (my excuse is that its been winter in Sydney). The old mounts were completely destroyed leaving the engine sitting directly on the cross member.Now that I can get at my carbies I find that they are the "Tamper Proof" variety that don't provide for mixture adjustment. I've never seen these before ! My engine is running very rich at idle and I need to do something about it.Does anyone know if its either possible to adjust the mixture on these or even better retro fit the usual mixture screw arrangement.Is this an aberration only fitted to Ozzie built 2500TC ? Quote Link to comment Share on other sites More sharing options...
nang Posted September 30, 2015 Share Posted September 30, 2015 No, we had some in NZ too. I THINK I modified mine or may have just replaced them. Shouldn't be too difficult to get them back to standard though. From memory the idle adjustment is just covered with a plug which can be pulled out.Tony. Quote Link to comment Share on other sites More sharing options...
Rod 2500S Posted September 30, 2015 Share Posted September 30, 2015 Ok the book says that "some OZ models were fitted with tamper proof carbies" etc. Looks like you lucked out Col. I think a set of adjustable HS6's appeared on Ebay a while back about $150 but postage could be a bit. Bits and pieces are being advertised all the time keep a look out. Another point is that the "capstat" jets AKA "waxstats" can and do seize up in the fully rich position which probably explains your mixture problems. These are readily obtainable from the usual suspects. HTH CheersRod Quote Link to comment Share on other sites More sharing options...
Richard B Posted September 30, 2015 Share Posted September 30, 2015 You can get "Waxstat conversion" jets for HS4's, I don't know if they are available for HS6's, try Burlen Fuel services. Maybe cheaper than getting complete new carburettors. Quote Link to comment Share on other sites More sharing options...
Gt6s Posted September 30, 2015 Share Posted September 30, 2015 Quoted from Richard B You can get "Waxstat conversion" jets for HS4's, I don't know if they are available for HS6's, try Burlen Fuel services. Maybe cheaper than getting complete new carburettors. Or 4 one p pieces.Laurence Quote Link to comment Share on other sites More sharing options...
Rod 2500S Posted September 30, 2015 Share Posted September 30, 2015 Yes conversions for HS6's are available but this won't cure the lack of adjustment issue. Believe me the fastest, cheapest fix is to find a decent second hand set of carbies (adjustable of course) I don't think you can get new carbies. Call Burlen their advice is free and they know what they're talking about.CheersRod Quote Link to comment Share on other sites More sharing options...
colmiller Posted October 1, 2015 Author Share Posted October 1, 2015 Quoted from Gt6s Or 4 one p pieces.Laurence Thanks Laurence, I did find a US Triumph site where the recommendation was to remove the wax cartridge and replace it with a couple of coins. I guess that means its possible to tune for idle mixture by changing the thickness of the coin spacers. Sounds effective but fiddly I wonder if a bolt threaded into the base would work (screw the bolt up to weaken - down to enrich). I may give that a try. Quote Link to comment Share on other sites More sharing options...
colmiller Posted October 2, 2015 Author Share Posted October 2, 2015 My goodness Burlen are on the ball. I had an email reply from their tech services people within hours of sending my enquiry from the other side of the world.There is indeed a kit available to retro fit standard jets to HS6 carbies and at less than 20 quid. Interesting as replacement Capstar jets are 50% more expensive.Part numbers are AUE1118 & AUE1119. I assume for front & rear carbies. Quote Link to comment Share on other sites More sharing options...
Rod 2500S Posted October 3, 2015 Share Posted October 3, 2015 Hi Coldoes this fit your tamper proof carbs? Quote Link to comment Share on other sites More sharing options...
colmiller Posted October 3, 2015 Author Share Posted October 3, 2015 Quoted from Rod 2500S Hi Coldoes this fit your tamper proof carbs? That was the advice from Burlen.Unfortunately they are on back order atm but I will report back when I receive them. Quote Link to comment Share on other sites More sharing options...
piman Posted October 3, 2015 Share Posted October 3, 2015 Hello Col, as you now have the part numbers why not see if any Australian suppliers have stock?Alec Quote Link to comment Share on other sites More sharing options...
colmiller Posted October 4, 2015 Author Share Posted October 4, 2015 Good idea Alec. Quote Link to comment Share on other sites More sharing options...
Rod 2500S Posted October 4, 2015 Share Posted October 4, 2015 Gday Coltry this http://www.sumidel.com/ in Lakemba NSWI'm still somewhat confused, my book (see scanned page) shows that the jet housing seems to be sealed. Can you confirm that you are able to "get at" the workings? IMHO a jet conversion still won't cure your adjustment issue despite what Burlin said. Hopefully I'm wrong. If/When you contact Midel attach a copy of my pic (if possible) HTH Cheers Rod Quote Link to comment Share on other sites More sharing options...
nang Posted October 4, 2015 Share Posted October 4, 2015 It looks like there's more than one version. Mine had a removeable plug blocking the idle adjustment but just a plate stopping the hex adjusting nut from being moved more than one flat. That bit can be removed. Sorry no longer have this car (late NZ assembled S ) so I can't check.Tony. Quote Link to comment Share on other sites More sharing options...
nang Posted October 4, 2015 Share Posted October 4, 2015 It looks like there's more than one version. Mine had a removeable plug blocking the idle adjustment but just a plate stopping the hex adjusting nut from being moved more than one flat. That bit can be removed. Sorry no longer have this car (late NZ assembled S ) so I can't check but I can't see why you can't replace the jet assy with a conventional one.Tony. Quote Link to comment Share on other sites More sharing options...
piman Posted October 4, 2015 Share Posted October 4, 2015 Hello Col, just a thought after seeing the pictures, check the needles are fitted correctly, note in the picture the shoulder is flush with the base of the piston. They could have been fitted too far into the pistons which will give a rich mixture.Alec Quote Link to comment Share on other sites More sharing options...
colmiller Posted October 5, 2015 Author Share Posted October 5, 2015 Thanks guys, Rod, I have emailed Midel I'll have to wait for our public holiday lethargy to wear off before I get a reply but at least they are close. I'll let you know. I have the same manual as you which doesnt show things too clearly. I believe the upgrade/retro fit will completely replace the waxstat with a new assembly that will be adjustable in the usual manner.Tony, Yes there must be a couple of versions. The slow running screw is just a blanking plug but my jet assembly is as shown in Rods drawing, a whole new type of sealed unit.Alec, Thanks I have checked all those sort of things. Now that I am starting to understand these units a little They may not be as bad as I first thought. The excessive richness is only when cold. As the under bonnet temp rises it does get better ( which is how the things are supposed to work). I still prefer the idea of being in control and plan to swap them out when able.Thanks again everybody. I will keep you posted.Colin Quote Link to comment Share on other sites More sharing options...
Rod 2500S Posted October 6, 2015 Share Posted October 6, 2015 that's the spirit mate learn a little bit everydayCheersRod Quote Link to comment Share on other sites More sharing options...
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