Automental Posted September 23, 2020 Report Share Posted September 23, 2020 I’m about to fit some shiny new air filters to my TR7. Does anyone have any experience of this, and in particular whether it is necessary to change the carb needles for a richer mixture? And if so which ones? Did the carbs need a lot of fettling afterwards?😩 Many thanks, Paul Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 23, 2020 Report Share Posted September 23, 2020 there some needles listed in the Moss /triumphtune manual but you need to say what engine/8 or 16 valve /what carb HS4 or HS6/exhaust type / etc Pete Link to comment Share on other sites More sharing options...
Automental Posted September 23, 2020 Author Report Share Posted September 23, 2020 Thanks Pete. Will have a look Link to comment Share on other sites More sharing options...
Nigel Clark Posted September 23, 2020 Report Share Posted September 23, 2020 If the air filters are the only change from standard, there should be no need for richer needles. Just warm the engine and re-tune the carbs at tick over and all should be well. With a sports exhaust as well, perhaps richer needles will be needed. TR7 experts like Robsport could advise. Nigel Link to comment Share on other sites More sharing options...
dave.vitesse Posted September 24, 2020 Report Share Posted September 24, 2020 BDC or slightly richer BAE. Avoid BAL as they are very rich on the standard engine. Tested on three TR7's todate with a good improvement in the overall performance. I made up some small rams to fit inside the K&N's. Dave Link to comment Share on other sites More sharing options...
Automental Posted September 25, 2020 Author Report Share Posted September 25, 2020 Mmmm, some differences of opinion then. Thanks chaps. Paul Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 25, 2020 Report Share Posted September 25, 2020 but knowone knows just what you have in the range of TR7 so its a bit of guesswork Pete Link to comment Share on other sites More sharing options...
Automental Posted September 26, 2020 Author Report Share Posted September 26, 2020 Oh, sorry, it’s the one seen in my profile. Bog standard 81 Drophead. Has a stainless exhaust but not a sports one as far as I know and standard manifold so I assume that doesn’t make a difference Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 26, 2020 Report Share Posted September 26, 2020 not being a TR7 guy is a bog std 8 valve or 16valve ?? i dont want to guess its 8 the clues in triumph tune makes a difference in what they suggest Pete Link to comment Share on other sites More sharing options...
Automental Posted September 26, 2020 Author Report Share Posted September 26, 2020 Just 8. Very few had the 16 valve Dolly Sprint head Link to comment Share on other sites More sharing options...
dave.vitesse Posted September 26, 2020 Report Share Posted September 26, 2020 21 hours ago, Automental said: Mmmm, some differences of opinion then. Thanks chaps. Paul The needles I recommended were tried and tested on three TR7's. Also found most standard stainless steel exhausts systems give better gas flow than the original mild steel set-up. Having tried the tubular manifold there wasn't any worthwhile increase in BHP against the standard type. That is with a Sports exhaust system or a standard stainless steel system. The main improvement was with the standard stainless steel system as they are straight through boxes and not the baffled type as on the original set-up. The sports system gave very similar results. The full sports system works well on a tuned engine. Dave Link to comment Share on other sites More sharing options...
Automental Posted September 26, 2020 Author Report Share Posted September 26, 2020 That’s really useful Dave. I think I’ll go with your tried and tested recommendation. Good news about the exhaust helping a little. Must admit it sounds really good, better than a standard one I’d imagine (although my TR7 is the only one I’ve driven or even been in!), presumably due to the lack of baffling so that makes sense. I’ve only had the car 2 months and I must say I’m chuffed to bits with it. And still haven’t seen another one since I got it, so a rare beast. Paul 1 Link to comment Share on other sites More sharing options...
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