544 B20B help

lelshaddai · Jul 22nd, 2021, 20:48

Is the 123 only electronic ign? I wanted to keep points if I can. I tried Petronix in the current distib and had trouble hooking it up the the coil since it still has the armored cable. Will only the 0231146078 work our can I use 0231146077 or 02311460009?

lelshaddai · Jul 22nd, 2021, 20:53

Farmer, here are the pics and measurements.

The holes about 1 1/2 in diameter. They are 1 1/2 inch, on center from the fender connection. They are 5 1/2 on center from the bottom. These are estimates. The holes appear to be 35" apart on center.

Salop Farmer · Jul 23rd, 2021, 07:57

Thanks so much for that and taking the trouble to post photos. It will be a great help to me. Do hope you get your B20 motor sorted.

Burdekin · Jul 23rd, 2021, 08:03

Quote:

Originally Posted by lelshaddai

Is the 123 only electronic ign? I wanted to keep points if I can. I tried Petronix in the current distib and had trouble hooking it up the the coil since it still has the armored cable. Will only the 0231146078 work our can I use 0231146077 or 02311460009?

Contact Adam (swedishandgerman) on here, he is your man when it comes to distributors. He'll know which one is best to have and probably will have one he could sell you. He is in England is the only issue for you.

Army · Jul 23rd, 2021, 08:10

VP autoparts have an American branch - they might be able to help

simonvolvo · Jul 23rd, 2021, 21:20

Here are pics showing the inside of the distributor (the type you are talking about: JFUR4 0231 146 078) of my 1970 B20B.

As said earlier, it forms part of a vacuum retard system, specifically for emission control purposes. In this system suction for the vacuum “pot” on the distributor is obtained from a very specifically located port on the rear carb (of the twin SUs). The port is in the region of the throttle plate, on the underside of the carb, such that when the throttle plate is closed the lower edge of the throttle plate lies just upstream of the port (and suction at the port is high). As the throttle opens, the edge of the throttle plate moves to a point downstream of the port and suction rapidly falls away.

As a consequence, I don’t think the vacuum connection in this system would have any effect on the ignition timing except when the throttle is almost closed.

I have blocked off the port, as most people seem to do.

Jul 22nd, 2021, 20:48	#1
lelshaddai Senior Member Last Online: Dec 30th, 2022 02:42 Join Date: Jun 2015 Location: Mesa, Arizona	Is the 123 only electronic ign? I wanted to keep points if I can. I tried Petronix in the current distib and had trouble hooking it up the the coil since it still has the armored cable. Will only the 0231146078 work our can I use 0231146077 or 02311460009? __________________ 1962 Volvo PV544 1951 Studebaker Starlight State Commander Coupe 1953 Studebaker Starlight Commander

Jul 22nd, 2021, 20:53	#2
lelshaddai Senior Member Last Online: Dec 30th, 2022 02:42 Join Date: Jun 2015 Location: Mesa, Arizona	Farmer, here are the pics and measurements. The holes about 1 1/2 in diameter. They are 1 1/2 inch, on center from the fender connection. They are 5 1/2 on center from the bottom. These are estimates. The holes appear to be 35" apart on center. __________________ 1962 Volvo PV544 1951 Studebaker Starlight State Commander Coupe 1953 Studebaker Starlight Commander

Jul 23rd, 2021, 08:10	#5
Army marches on his stomach Last Online: Feb 11th, 2022 03:15 Join Date: Jan 2018 Location: Somewhere in the Netherlands	VP autoparts have an American branch - they might be able to help __________________ 1961 Volvo PV544 the quick and easy in between project(!) 1981 Mercedes 300D <=> 230 diesel to petrol conversion project 1965 Series 2a Station Wagon mega build 1992 Mercedes 190E The car that works!

Jul 23rd, 2021, 07:57	#3
Salop Farmer Member Last Online: Yesterday 17:39 Join Date: Feb 2019 Location: Oswestry	Thanks so much for that and taking the trouble to post photos. It will be a great help to me. Do hope you get your B20 motor sorted.

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