d2alfa Posted April 15, 2016 Report Share Posted April 15, 2016 Currently on my TR4a I have a lucas 40795 model 25D4. Considering buying an electronic distributor such as 123 or CSI. Any advice would be welcomed. What does Optimised or Tunes mean? Regards David Quote Link to post Share on other sites
Fireman049 Posted April 15, 2016 Report Share Posted April 15, 2016 (edited) Hi David ~ I fitted an Albertronic 123 distributor to my 3A and am very pleased with it. If you decide to take this route then a word of warning. You should fit a vacuum pipe incorporating a vapour trap in it. This is to prevent fuel being drawn into the distributor which will destroy it. The vapour trap should be fitted in an upward direction. (see photo.). Tom. Edited April 15, 2016 by Fireman049 Quote Link to post Share on other sites
d2alfa Posted April 15, 2016 Author Report Share Posted April 15, 2016 Thanks Tom, Where did you get the vapour trap please? David Quote Link to post Share on other sites
Fireman049 Posted April 15, 2016 Report Share Posted April 15, 2016 Hi David ~ I got the vacuum pipe with the vapour trap from Moss. The one (like mine) with one female and one slip-on fitting ~ part No. 12H733. (See page 88 in the Moss catalogue). The '123' distributor takes the slip-on fitting. Tom. Quote Link to post Share on other sites
Mark1965TR4aBRG Posted April 17, 2016 Report Share Posted April 17, 2016 Just pop the lumenition in - takes 10 mins and works a treat. I've binned the vacuum pipe - most don't work anyway. Quote Link to post Share on other sites
d2alfa Posted April 21, 2016 Author Report Share Posted April 21, 2016 Thanks for the information Regards David Quote Link to post Share on other sites
tim hunt Posted April 21, 2016 Report Share Posted April 21, 2016 David, I had some communication with Albertronic last year and took the opportunity of checking the need for a vacuum trap. As you can see I was told not needed. Tim From: Ron Tettero [sales@albertronic.com]Sent: 31 August 2015 08:38To: Tim HuntSubject: Re: Fwd: Techical query Hi Tim,Yes, when the light comes on, the spark plug fires.It is not necessary to mount a sort of trap in the vacuum line.Best regards,RonOp 28-Aug-15 om 16:40 schreef Tim Hunt: Just for my information, in STEP 3: when the green LED light just illuminatesdoes this correspond to the exact point at which the spark plug fires? I have also beentold that it is necessary to incorporate a trap of some sort in the vacuum tube in orderto prevent the possibility of petrol/vapour being drawn into the distributor. I sawnothing in the installation instructions about this and to be honest have had noproblems in the last eight years!I attach photos of my car and the 123 installed.Regards,Tim Quote Link to post Share on other sites
TR4A1965 Posted April 21, 2016 Report Share Posted April 21, 2016 (edited) I have fitted a 123. So far so good but we have the detail work to do. Seeing the read out on your PC is pretty impressive and you can alter the curves yourself. Has a facility to attach a switch for sport mode or general driving. Wast of time considering we are always in sport mode - right?:-) On my website you can see quite a bit of information on the 123 http://tr4a.weebly.com/ignition.html Hope it helps. Best Paul. Edited April 21, 2016 by TR4A1965 Quote Link to post Share on other sites
Peter Cobbold Posted April 21, 2016 Report Share Posted April 21, 2016 I have fitted a 123. So far so good but we have the detail work to do. Seeing the read out on your PC is pretty impressive and you can alter the curves yourself. Has a facility to attach a switch for sport mode or general driving. Wast of time considering we are always in sport mode - right?:-) On my website you can see quite a bit of information on the 123 http://tr4a.weebly.com/ignition.html Hope it helps. Best Paul. Paul, Those 'sport and general modes' - do 123 supply curves for them? and does it need the vacuum take-off connected from inlet manifold? Peter Quote Link to post Share on other sites
TriumphV8 Posted April 22, 2016 Report Share Posted April 22, 2016 (edited) If it must be a 123 I would go for the "tune" version that allows to set the rpm based advance and the manifold pressure based advanced in a free programmable curve from a laptop. Its a bit more work but all the discussions if the preprogrammed curves of the 123ignition perfectly fit dont matter any more with that. Also we learned that different cams generate different manifold pressure what is the base for the part throttle advance. 123 ignition has there no provision to swap curves or make it fit for the cam. So if a non stock cam is fitted the stock part throttle advance will not fit perfect. The tune version is also necessary for carbs without the common pickup of MAP that provides no suction at idle. The tune can compensate that because its work can be started from a certain rev on and is useless at idle. So up to first question it must be decided if only the spark itself will be generated electronically or if also the timing will be made electronically. The 123 tune has also the provision to switch between two free programmed curves. If you call it sport or street or good or bad fuel is up to the owner but it helps to find the best setup during driving because one can switch the curves on the roads and notice immedeately the difference. Edited April 22, 2016 by TriumphV8 Quote Link to post Share on other sites
mike3md Posted April 22, 2016 Report Share Posted April 22, 2016 David, Not a personal recommendation (still using points, at least they go wrong slowly....), but others in our group reckon this works well - less expensive, albeit less wide ranging solution: http://www.accuspark.co.uk/Blackbox.htm Mike Quote Link to post Share on other sites
TriumphV8 Posted April 22, 2016 Report Share Posted April 22, 2016 Thats the "Cheap Charly" brother of the Megasquirt. The main thing that is missing is the part throttle advance including the throttle position or the manifold pressure signal. Many other things are missing, too. Not the right time to mention all but I would not vote for this. If not familiar with electronics 123 is the solution, if perfect setup is requiered MS is a milestone and if only a cheap substitute for points is needed the accuspark for 30GBP is okay. Quote Link to post Share on other sites
TR4A1965 Posted April 24, 2016 Report Share Posted April 24, 2016 Paul, Those 'sport and general modes' - do 123 supply curves for them? and does it need the vacuum take-off connected from inlet manifold? Peter Hi Peter, 123 do not supply curves. It is more about creating your own or altering the existing ones when on the rolling road etc? The vacuum take off goes to the SU carb take off - we have HS6 SU not 175 Strombergs. Best Paul Quote Link to post Share on other sites
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