anthonym Posted July 2 Share Posted July 2 (edited) Wanted: Gunsons Colortune kit 4074 That's the one that fits 14mm spark plug thread for my BDR https://www.gunsonshop.com/contents/en-us/p209_G4074-G4171-G4172-Gunson-Colortune-See-Through-Spark-Plug-Kit.html Anthony Edited July 2 by anthonym Sorted Link to comment Share on other sites More sharing options...
SM25T Posted July 2 Share Posted July 2 I have probably got one of these from 47 years ago, but whether I can find it is another matter !! Link to comment Share on other sites More sharing options...
Area Representative Iain McCallum Posted July 2 Area Representative Share Posted July 2 This one is about 50 years old and is Colortune 2 but seems to be 14mm diameter. Any use? Link to comment Share on other sites More sharing options...
anthonym Posted July 2 Author Share Posted July 2 (edited) UPDATE: Now ordered online. ======================== It may just be! There do not seem to be any available anywhere on the planet - I need "long reach" in the 14mm - which is a separate adapter part number 4055D (and now ordered in the UK). Also the long viewing tube. I guess yours are not going anywhere soon so I'll wait and see. Thank you both 🙂 I can't even find the workshop version that has 4 . Many sites claim to have these until one engages in. the order process. Incidentally the reason it is still around is bikers use it. Anthony Notes for self: Manual https://www.merakgroup.com/wp-content/uploads/2014/04/G4074-English-Gunson-Colortune.pdf Edited July 2 by anthonym Want satisfied Link to comment Share on other sites More sharing options...
BigCol Posted July 3 Share Posted July 3 On 02/07/2024 at 11:16, SM25T said: I have probably got one of these from 47 years ago, but whether I can find it is another matter !! I had one in 1981…. can’t believe I’d’ve thrown it away but haven’t got it anymore. Link to comment Share on other sites More sharing options...
anthonym Posted July 3 Author Share Posted July 3 I'm looking forward to the challenge of how low I can get the emissions from my 1987 BDR, carbs no cat. It's fine as it is, I just want to explore 🙂 Link to comment Share on other sites More sharing options...
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