Aldon performance dizzy - anyone know more
Discussion
Anyone running with an Aldon performance dizzy?
I want to be able to get my timing to 35 degs advance at max revs but the standard Lucas 25 dizzy max's out around 25-26 deg's. I know the obvious route is a 3D Megajolt or similar and I may well go that way. But I'm not too fussed about having the rest of the functionality. So I thought I'd look into Aldon to see whether their performance distributor would enable the extra advance. Their web site provides no info at all apart from part numbers and prices. So a quick telephone call and they said they can't tell me as details of the mods they do to their dizzy is market sensitive and they don't tell anyone. They just say it's better than a standard dizzy and their reputation is why I should buy & fit one.
A bit bizarre I thought. Presumably people do buy them though, so can someone enlighten me as to what you get for your money and even better, whether it'll provide the extra advance.
Moto
I want to be able to get my timing to 35 degs advance at max revs but the standard Lucas 25 dizzy max's out around 25-26 deg's. I know the obvious route is a 3D Megajolt or similar and I may well go that way. But I'm not too fussed about having the rest of the functionality. So I thought I'd look into Aldon to see whether their performance distributor would enable the extra advance. Their web site provides no info at all apart from part numbers and prices. So a quick telephone call and they said they can't tell me as details of the mods they do to their dizzy is market sensitive and they don't tell anyone. They just say it's better than a standard dizzy and their reputation is why I should buy & fit one.
A bit bizarre I thought. Presumably people do buy them though, so can someone enlighten me as to what you get for your money and even better, whether it'll provide the extra advance.
Moto
Its a long time since I used to bugger about with Lucas dizzy's on webers with wild cams but my view is that you will want to be around 18 - 20 degrees before TDC at 900RPM (tickover) then you will be looking for about 16 degrees of advance with a total max of 36 degrees around 3500 - 4000 rpm. You will find that if anything you will have to modify the bob weights so as not to give too much advance. Not sure what the modern adjustable Aldons will give you but I think you will get at least 20 degrees swing and with a 20 BTDC setting you will be reducing the max advance rather than trying for more. Loads of Ford guys run Aldons with much wilder specs than yours so I wouldn't worry too much.
Above figures rule of thumb and its always worth playing around a couple of degrees either side. but you won't be far away with these settings.
Its many years since I messed around though and doubtless much will have changed.
As an option have you seen this??
https://www.123ignitionshop.com/gb/tune-plus-ford/...
No experience of it but looks to allow for custom mapping of ignition advance without switching to a stand alone ignition system and crank trigger??
Also here is a good article for you..
http://mgaguru.com/mgtech/ignition/pdf/tuning_luca...
N.
Above figures rule of thumb and its always worth playing around a couple of degrees either side. but you won't be far away with these settings.
Its many years since I messed around though and doubtless much will have changed.
As an option have you seen this??
https://www.123ignitionshop.com/gb/tune-plus-ford/...
No experience of it but looks to allow for custom mapping of ignition advance without switching to a stand alone ignition system and crank trigger??
Also here is a good article for you..
http://mgaguru.com/mgtech/ignition/pdf/tuning_luca...
N.
Edited by Dollyman1850 on Monday 29th May 21:12
Edited by Dollyman1850 on Monday 29th May 21:37
I bought and fitted a 123 distributor last year.
I wanted to stay close to standard and it gave me the best compromise of mappable timing. The other distributor options seem to have fixed advanced curves.
You have to supply a dizzy to modify but it's an easy fit. Just need to get it rolling road set up - still running a fairly basic set-up.
Feel free to PM me if you want to know more.
I wanted to stay close to standard and it gave me the best compromise of mappable timing. The other distributor options seem to have fixed advanced curves.
You have to supply a dizzy to modify but it's an easy fit. Just need to get it rolling road set up - still running a fairly basic set-up.
Feel free to PM me if you want to know more.
I had a look into the 123 and it does seems a nice solution, if a little expensive. It also has great reviews on road cars. However there are some rumblings on the web from a few people who have them and under hard acceleration they can suffer timing wobble. Particularly noticeable the more cylinders an engine has. Apparently it has to do with the coil recharge time, the more cylinders the less recharge time available.
As I'm running my Vixen at a few TVR Sprint Championship events this year, it seemed that Aldon might be a better solution as they have lots of experience of racing Crossflows. They're just very secretive about it and me being me, I'd like to know what I'm getting (or not getting) before parting with hard earned shillings.
Moto
As I'm running my Vixen at a few TVR Sprint Championship events this year, it seemed that Aldon might be a better solution as they have lots of experience of racing Crossflows. They're just very secretive about it and me being me, I'd like to know what I'm getting (or not getting) before parting with hard earned shillings.
Moto
Moto said:
I had a look into the 123 and it does seems a nice solution, if a little expensive. It also has great reviews on road cars. However there are some rumblings on the web from a few people who have them and under hard acceleration they can suffer timing wobble. Particularly noticeable the more cylinders an engine has. Apparently it has to do with the coil recharge time, the more cylinders the less recharge time available.
As I'm running my Vixen at a few TVR Sprint Championship events this year, it seemed that Aldon might be a better solution as they have lots of experience of racing Crossflows. They're just very secretive about it and me being me, I'd like to know what I'm getting (or not getting) before parting with hard earned shillings.
Moto
you pays your money or you could fanny about with bob weights and springs for weeks on end yourself to get what you can buy of the guys who have been doing it a long time. As I'm running my Vixen at a few TVR Sprint Championship events this year, it seemed that Aldon might be a better solution as they have lots of experience of racing Crossflows. They're just very secretive about it and me being me, I'd like to know what I'm getting (or not getting) before parting with hard earned shillings.
Moto
Have you thought about using Nodiz.
N.
Edited by Dollyman1850 on Sunday 4th June 21:07
Thanks Alan. They look like a good alternative to Aldon. I'll speak with them and let you know how I get on.
Neil. Thx but having looked at the 3D options I would opt for the Megajolt, if I go that route. There seems to be more Megajolt knowledge around and many of the top crossflow builders & racers seem to recommend Megajolt.
The engine rebuild plan currently is to rebuild as was (well ignition wise) but with a trigger wheel and sensor fitted so easy to upgrade to 3D if & when required. The decision on current dizzy versus a new Aldon / Bestek will have to be made during the RR setup.
Moto
Neil. Thx but having looked at the 3D options I would opt for the Megajolt, if I go that route. There seems to be more Megajolt knowledge around and many of the top crossflow builders & racers seem to recommend Megajolt.
The engine rebuild plan currently is to rebuild as was (well ignition wise) but with a trigger wheel and sensor fitted so easy to upgrade to 3D if & when required. The decision on current dizzy versus a new Aldon / Bestek will have to be made during the RR setup.
Moto
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