71 V12 Posted April 26, 2017 Report Share Posted April 26, 2017 Hi All, My dizzy is well worn and US spec retard only. Has anyone on the forum bought the electronic dizzy with tachometer drive? Are they accurate and reliable? If so with Lucas repro's at around £400 from a cost point of view the electronic would be an obvious choice if they work and are reliable. http://www.ebay.co.uk/itm/Triumph-6-Cylinder-Electronic-Distributor-with-Tacho-complete-TR6-GT6-Delco-/131597756354?fits=Car+Make%3ATriumph%7CModel%3ATR+6&hash=item1ea3d667c2:g:NcsAAOSwHoFXvCK6 All feedback appreciated Many thanks, Kevin Quote Link to post Share on other sites
88V8 Posted April 26, 2017 Report Share Posted April 26, 2017 Talk to Martin Jay about rebuilding your existing dizzie http://www.distributordoctor.com/ Quote Link to post Share on other sites
stuart Posted April 27, 2017 Report Share Posted April 27, 2017 Talk to Martin Jay about rebuilding your existing dizzie http://www.distributordoctor.com/ While your at it ask him about these repro electronic ones, you will be surprised with the answer and then understand why we always say get your original rebuilt and why Martin is so busy. Stuart. Quote Link to post Share on other sites
71 V12 Posted April 27, 2017 Author Report Share Posted April 27, 2017 That bad! Not much point rebuilding the US spec retard only as I now have a higher compression UK spec 219016 head fitted and want to max performance, therefore correct distributor advance. Albeit still running on twin strombergs. I think I need to source a UK spec Triumph 6 cylinder dizzy from a Triumph 2000/ 2500 or similar. Would this give me the correct advance/ performance for my spec engine? Many thanks, Kevin Quote Link to post Share on other sites
Peter Cobbold Posted April 27, 2017 Report Share Posted April 27, 2017 (edited) Kevin, Saloon disy data here: http://www.teglerizer.com/mgstuff/advance_curves.htm NB the advance and rpm are all at-the-distributor values: double the numbers for the crank degrees and rpm we all use. Static timing has to be added- I reckon around 10 BTDC for 9.5:1 compression. The TR250 is probably closest to what you need: http://www.tr-register.co.uk/forums/index.php?/topic/27605-tr6-distributor-vacuum-advance/ post7: "The TR250 had 26 degrees of mechanical advance + 10 degrees static + vacuum advance of ~ 10 degrees ( not sure about this last figure ) for a total of well over 40 degrees" (my comment - these are crank deg) The vac adv is only operational at cruise, and helps mpg. You would probably not notice its absence. Peter Edited April 27, 2017 by Peter Cobbold Quote Link to post Share on other sites
stuart Posted April 28, 2017 Report Share Posted April 28, 2017 That bad! Not much point rebuilding the US spec retard only as I now have a higher compression UK spec 219016 head fitted and want to max performance, therefore correct distributor advance. Albeit still running on twin strombergs. I think I need to source a UK spec Triumph 6 cylinder dizzy from a Triumph 2000/ 2500 or similar. Would this give me the correct advance/ performance for my spec engine? Many thanks, Kevin Martin would rebuild your US spec Dizzy to UK spec, give him a ring and he will tell you the SP on it. Stuart. Quote Link to post Share on other sites
oldtuckunder Posted April 28, 2017 Report Share Posted April 28, 2017 A good choice for a carb'd 6 would be the Lucas Dissy from a Vitesse or GT6 Mk3, however they are all knackered by now and probably need a rebuild, so getting one refurbished to the correct spec for your engine is the best choice. Or of course look at a 123 Ignition Distributor. Alan Quote Link to post Share on other sites
astontr6 Posted April 28, 2017 Report Share Posted April 28, 2017 While your at it ask him about these repro electronic ones, you will be surprised with the answer and then understand why we always say get your original rebuilt and why Martin is so busy. Stuart. Stuart, Does that apply to the123 Ignition Distributor? Bruce. Quote Link to post Share on other sites
stuart Posted April 28, 2017 Report Share Posted April 28, 2017 Stuart, Does that apply to the123 Ignition Distributor? Bruce. I have seen problems with them also, one of the Dutch guys had one go down at Malvern a few years ago. They also tend to burn through rotor arms fairly regularly too. Stuart. Quote Link to post Share on other sites
71 V12 Posted April 28, 2017 Author Report Share Posted April 28, 2017 Anyone got a Triumph 6 cylinder dizzy with advance ie vacuum unit pointing towards the front of the car when installed in the engine in any condition for sale? Should be able to get one good one from two donors. I guess Martin can to any spec if he has the correct die cast distributor body. Please PM if you can help. Many thanks, Kevin Quote Link to post Share on other sites
stuart Posted April 28, 2017 Report Share Posted April 28, 2017 Anyone got a Triumph 6 cylinder dizzy with advance ie vacuum unit pointing towards the front of the car when installed in the engine in any condition for sale? Should be able to get one good one from two donors. I guess Martin can to any spec if he has the correct die cast distributor body. Please PM if you can help. Many thanks, Kevin Talk to Martin first you would be surprise what he has in stock. Stuart. Quote Link to post Share on other sites
71 V12 Posted April 28, 2017 Author Report Share Posted April 28, 2017 Hi Stuarf, I have, he could only offer the reproductions and admitted he's not that happy with the accuracy of them. Rebuilt original only way to go. Thank you for your input. Kevin Quote Link to post Share on other sites
astontr6 Posted April 28, 2017 Report Share Posted April 28, 2017 I have seen problems with them also, one of the Dutch guys had one go down at Malvern a few years ago. They also tend to burn through rotor arms fairly regularly too. Stuart. Thanks for that info! But a bit of a surprise! Bruce. Quote Link to post Share on other sites
71 V12 Posted April 29, 2017 Author Report Share Posted April 29, 2017 Anyone got a Lucas 6 cylinder Triumph dizzy with vacuum advance - any condition for sale? Quote Link to post Share on other sites
rog1 Posted April 29, 2017 Report Share Posted April 29, 2017 Hi Kevin, pm sent. Quote Link to post Share on other sites
TRGhost Posted May 25, 2017 Report Share Posted May 25, 2017 Hi I am a brand newbie, however, my 6 runs on witchcraft so it doesn't have a distributor. I think I have an electronic take off and rev counter on a distributor in the shed. Let me know if this is of any use. The P.O. was a bit of a preper so I am knee deep in old spark plugs. Moderator if this post is unsuitable please remove. David Quote Link to post Share on other sites
Peter Cobbold Posted May 25, 2017 Report Share Posted May 25, 2017 Hi I am a brand newbie, however, my 6 runs on witchcraft so it doesn't have a distributor. I think I have an electronic take off and rev counter on a distributor in the shed. Let me know if this is of any use. The P.O. was a bit of a preper so I am knee deep in old spark plugs. Moderator if this post is unsuitable please remove. David Hi David, welcome to the forum. My 6 is thankfully devoid of ignition broomsticks and still has a disy.( athough a rotary solenoid serves for boost-retard). Original distributors are now scarce so it might be in your interest to hang onto it - just in case the witches fail. There are lots of dud new plugs around. Old familiar names that we trusted are no longer reliable. Have fun sorting the good ones from the duffers. Peter Quote Link to post Share on other sites
71 V12 Posted May 25, 2017 Author Report Share Posted May 25, 2017 Hi I am a brand newbie, however, my 6 runs on witchcraft so it doesn't have a distributor. I think I have an electronic take off and rev counter on a distributor in the shed. Let me know if this is of any use. The P.O. was a bit of a preper so I am knee deep in old spark plugs. Moderator if this post is unsuitable please remove. David Hi David, Yes its of interest. I will pm you. Regards Kevin Quote Link to post Share on other sites
DRD Posted May 26, 2017 Report Share Posted May 26, 2017 Talk to Martin Jay about rebuilding your existing dizzie http://www.distributordoctor.com/ Or just do it yourself! Its not difficult and I thought £200 for a refurb was a bit OTT. Its a very simple device. Quote Link to post Share on other sites
DRD Posted May 26, 2017 Report Share Posted May 26, 2017 Kevin, Saloon disy data here: http://www.teglerizer.com/mgstuff/advance_curves.htm NB the advance and rpm are all at-the-distributor values: double the numbers for the crank degrees and rpm we all use. Static timing has to be added- I reckon around 10 BTDC for 9.5:1 compression. The TR250 is probably closest to what you need: http://www.tr-register.co.uk/forums/index.php?/topic/27605-tr6-distributor-vacuum-advance/ post7: "The TR250 had 26 degrees of mechanical advance + 10 degrees static + vacuum advance of ~ 10 degrees ( not sure about this last figure ) for a total of well over 40 degrees" (my comment - these are crank deg) The vac adv is only operational at cruise, and helps mpg. You would probably not notice its absence. Peter Peter, what mechanical advance does the CP car have? I understand its different to the CR series? Cheers Quote Link to post Share on other sites
stuart Posted May 26, 2017 Report Share Posted May 26, 2017 Or just do it yourself! Its not difficult and I thought £200 for a refurb was a bit OTT. Its a very simple device. You should talk to Martin Jay http://www.distributordoctor.com/ He will explain to you why it costs that and why its a bit more than your simplified description. Stuart. Quote Link to post Share on other sites
Peter Cobbold Posted May 26, 2017 Report Share Posted May 26, 2017 Peter, what mechanical advance does the CP car have? I understand its different to the CR series? Cheers Post 26 shows several curves: http://www.tr-register.co.uk/forums/index.php?/topic/24915-tr6-ignition-timing/page-2 Peter Quote Link to post Share on other sites
BlueTR3A-5EKT Posted May 26, 2017 Report Share Posted May 26, 2017 Or just do it yourself! Its not difficult and I thought £200 for a refurb was a bit OTT. Its a very simple device. Excellent, you have obviously found a source for the body to shaft bush, please share so we can do our own. They were a spare part but have completely gone now. Peter W PS how do you measure then setup dynamically the centrifugal advance ? on or off the car? Quote Link to post Share on other sites
oldtuckunder Posted May 26, 2017 Report Share Posted May 26, 2017 PS how do you measure then setup dynamically the centrifugal advance ? on or off the car? Des Hammill's "How to build & power tune distributor type ignition systems" is worth getting if you are going to start working on distributors, actually its worth getting if you just want to understand how it all works. Alan Quote Link to post Share on other sites
DRD Posted May 26, 2017 Report Share Posted May 26, 2017 Post 26 shows several curves: http://www.tr-register.co.uk/forums/index.php?/topic/24915-tr6-ignition-timing/page-2 Peter Thanks Peter Quote Link to post Share on other sites
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