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I have recently been in contact with the manufacturer of the 123 ignition dist. that is sold through Classic Alfa in the Uk .I have given him 4 more curves that I have seen on this forum to load into the brain of the dist. (There was only 10 and not my 0231178006 Bosch)However I need to know if you set my 2L Euro cams on 40mm webers at 36 degrees at 4600 which means as engine rpm increases past that point advance gets more and more or set the timing at full tit which means my static advance(hence idle) is poo.I at the moment have the unit set to an 045 dist. which feels a little lack lustre as opposed to the 006 set up on points.
Conversely does anyone have the bosch advance curves for the : 036,045,060,065,041,044,JF4,032,034
Hopefully I'm not being to anal and somone can point me in the right direction.



Burning off heaps of moderns in my 1967 GTV

Skand
 

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Trained (ex)Professional, , 1953-2018 RIP,
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16,232 Posts
The advance curves for the 032, 034, 041 & 044 (which are all the same, BTW), as well as the Bosch 006 and Shankle 4255 are listed in this thread. My understanding is that the JF4 is a type number, not a model number. Both the 041 and 044 distributors have JF4 listed on the distributor.
I may have some more dist curves at home. I'll check this evening.
 

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Trained (ex)Professional, , 1953-2018 RIP,
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16,232 Posts
They are the tolerance range. The upper curve is the maximum and the lower is the minimum.
In the above graph for the Bosch 060 for example, the degrees of advance at 5000rpm could be written either 36*-40* @5000rpm or 38* +/- 2* @ 5000rpm.
 
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