123 Electronic Distributor

 
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Alan Drover
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PostPosted: Wed Mar 07, 2018 10:56 am    Post subject: 123 Electronic Distributor Reply with quote
Has anyone fitted a 123 electronic distributor to a Series petrol engine? If anyone has done so, what were your impressions of it?
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Alan Drover.
1975 SWB hardtop with a 2.5 petrol engine, overdrive, front disc brakes, parabolic springs, hand throttle, Defender doors and Wolf wheels.
Also a 1977 Stage 2 MGB GT.
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Alan Drover
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PostPosted: Mon Mar 12, 2018 10:40 pm    Post subject: Reply with quote
In view of the underwhelming response to this topic I can safely assume that no one has fitted a 123 electronic distributor. Well, if you're thinking about it, don't bother. They're a waste of time and money.
I fitted one a few years ago to replace a worn distributor. I set it up exactly per institutions. There was no noticeable difference in starting or performance on the level, however, on reaching an incline pulling power dropped off dramatically. I persevered with this for a while but then a misfire developed. By this time it was out of warranty but the supplier agreed to take it back and have it looked at. Yo tide me over I bought a cheap distributor, the points in which lasted about 20 miles. Fortunately a member in Southampton had a proper 2.5 distributor which he sold to me. I gapped the points and fitted it. Performance was no different on the level from the 123, but uphill was completely different. Full pulling power was restored. Later I bought another 2.5 distributor from a Land Rovet breaker, sadly now ceased trading, and sent it to the Distributor Doctor for a rebuild. When I got it back, fitted with Pertronic electronic ignition, I fitted it, timed the engine and apart from the occasional drop of oil it has not been touched
I found out later that 123 distributors are totally unsuitable for low compression engines as they give insufficient vacuum advance.
It's considerably cheaper to have the Distributor Doctor rebuild your distributor and he does a very good job of it.
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Alan Drover.
1975 SWB hardtop with a 2.5 petrol engine, overdrive, front disc brakes, parabolic springs, hand throttle, Defender doors and Wolf wheels.
Also a 1977 Stage 2 MGB GT.
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Adie
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PostPosted: Mon Mar 12, 2018 11:49 pm    Post subject: Reply with quote
That, the wet and worn out carburetors....the reason I bought a diesel!

So apart from bad starting from cold in sub zero temps and chasing snails up hills it's all trouble free! Laughing
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1982 109" Stage 1 V8 County Station Wagon
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Alan Drover
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PostPosted: Tue Mar 13, 2018 7:31 am    Post subject: Reply with quote
Adie, the Zenith on my Land Rover was restored properly about 9 years ago and it's neither wet nor worn out unlike the cheap and nasty Chinese junk that is widely available.
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Alan Drover.
1975 SWB hardtop with a 2.5 petrol engine, overdrive, front disc brakes, parabolic springs, hand throttle, Defender doors and Wolf wheels.
Also a 1977 Stage 2 MGB GT.
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BigJohn
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PostPosted: Mon Jun 11, 2018 10:18 pm    Post subject: Reply with quote
I have a 123 on the 110 2.5 petrol. It's been pretty reliable to be honest. I didn't see much (if any) difference in performance from the original points distributor. I still have this as an emergency spare. The main thing is that I never have to adjust it. Also it is better for cold starting and as I run on LPG I need a good spark. Maybe the difference is that on LPG you run more advanced than petrol anyway.
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