Electronic ignition for 105 Giulia Duetto GTV - Page 4

haazed · #46 (**permalink**) 12-10-2007, 12:49 AM

Thanks stephan for your explanation, this product smells good, but as explain Bertonemorten, it's quite expensive and if it's the better solution perhaps I will invest in this because if you add the high performance 3ohm coil and the cable like purposed by Brits&pieces you add 90€ to have the top quality and the difference is about 100€...

Quote:

Originally Posted by Bertonemorten

Top product would be a 123 ignition system that could be programmed via a PC.

Bertonemorten · #47 (**permalink**) 12-10-2007, 01:59 AM

I think it would be a good idea. I´ve been trying to register in their forum, but I never got a passwort, and there is no email where you can contact them. Sent a fax about 2 months ago, but got no answer...

haazed · #48 (**permalink**) 12-10-2007, 02:23 AM

I will try this : Albertronic

Hope they are open-minded...

Future will tell us...

haazed · #49 (**permalink**) 12-10-2007, 02:36 AM

It's done. waiting for an answer...

haazed · #50 (**permalink**) 12-10-2007, 05:00 AM

Getting an answer from what it seems to be the boss of Albertronic : "Thank you, I will read it regularly !"

Rest to wait and see...

Richard Norris · #51 (**permalink**) 12-10-2007, 09:14 AM

The 006 tuning curve I mentioned is in Jim Kartalamkis' - tuning book (new edition) "How to Power Tune Alfa Romeo twin cam engines". I will upload a diagram from the book later this week.
Just to let you know that 123 really do listen to customer feedback (not just from the Alfa world but also classic car users generally) - they are already working on & hoping to launch in 2008 an electronic distributor with a USB connection to allow you to do just what some forum members have asked for - one you can programme from your laptop!
This way they will have the unit we currently sell for standard & mildly tuned cars and then a completely adaptable unit for the tuning enthusiast!

Richard Norris
Classic Alfa
London
UK

**alfaparticle** · #52 (**permalink**) 12-10-2007, 11:58 AM

Hi Richard:
Posting that curve will be helpful.
Thanks,
Ed Prytherch

180OUT · #53 (**permalink**) 12-10-2007, 12:35 PM

Do a search for "distributor curves". Pappajam posted the Shankle modified advance curve about a year ago.

**alfaparticle** · #54 (**permalink**) 12-10-2007, 01:22 PM

I have the Shankle curve. Better than that, I have a Shankle modified distributor with the original documentation from Shankle. It is about to go on ebay. It is the 006 curve that has been a mystery so far.
Ed Prytherch

Bertonemorten · #55 (**permalink**) 12-10-2007, 10:22 PM

Curves from Papajam

Advance curve

Richard Norris · #56 (**permalink**) 12-11-2007, 12:30 AM

Also worth re-stating Jim K's comments from a couple of years ago - Bosch 0231.178.006 distributor curve is more suitable for modern fuel (see attached curve diagram). This curve is found in Position A on the current version of the 123 distributor.
Richard Norris
Classic Alfa
London
UK

**alfaparticle** · #57 (**permalink**) 12-11-2007, 04:16 AM

I am running the Bosch 0231.178.006 distributor curve that Richard has posted. The engine is a 2L with 10:1 pistons, CB47 cams, a ported head and Webers with 34 mm venturis. The idle is exceptionally good. It settles immediately at 700 rpm, picks up well and does not ping on 93 octane. But there is definitely a loss of mid range power compared with the Shankle Sport Marelliplex that was in the car until 10 days ago. That is why I want to know about the 006 curve.
Ed Prytherch
79 Spider
2 x 88 Milano Verde's

Richard Norris · #58 (**permalink**) 12-11-2007, 05:33 AM

Just had a reply from 123 Ignition. The curve in position D based on a graph from The Alfa Romeo DOHC Engine High Performance Manual by Jim Kartalamakis is just a simple straight line.
It begins advancing at 1,000 rpm and reaches its maximum of 21 degrees at 4,000 rpm in a simple straight line.
No need for a graph on that one!

Hope that helps,
Richard Norris
Classic Alfa
UK

Max Banks · #59 (**permalink**) 12-11-2007, 12:54 PM

Starting from how many degrees at 1000 rpm?! What happens after 4000 rpm, stays at 21 degrees?!

Alfajay · #60 (**permalink**) 12-11-2007, 01:11 PM

Max:

In the 2nd edition of Jim Kartalamakis' book, he outlines how to modify a late Bosch distributor so that it advances only 22 degrees. He recommends setting the static advance at 10 - 14 degrees, yeilding a maximum total advance of 32 to 36 degrees. The curve shown in his book (see pages 82 - 83) goes flat at 4,000 crankshaft rpm. So, the answer to your second question is "yes".

I will admit that total maximum advance settings in the low 30's sound low to me, but that's what Jim K. is advocating.