Amazon: - Distributor springs

Thowdfella · Dec 9th, 2019, 10:53

I have a122s 1966 and I have removed the distributor because when I turn the rotor arm against the springs, it then returns but you can then move it back a bit further. Looking into the distributor haveing removed the base plate, one spring is longer than the other and there is a gap on the longer spring between the spring post and the spring loop. Does anyone know if the springs should be different? Also I am having great difficulty finding new springs so help would be appreciated.

Ron Kwas · Dec 9th, 2019, 11:05

Tf;

Springs for centrifugal advance are indeed different, in order to present a given force from idle (heavier spring simply slides on its extended end-loop), and at a certain elevated RPM, second heavier spring runs into the end of its end-loop, and starts to add its force against the advance rotation. In this way, a two slope advance curve, as shown here, is implemented:

Source: https://www.sw-em.com/Volvo%20Igniti...e_Spark_Timing

If cent. advance is not returning smoothly or fully, I'd start by cleaning and lubing all pivoting and sliding areas of the assembly.

Good Hunting!

Thowdfella · Dec 9th, 2019, 11:23

Thanks for your knowledgable reply. That reassures me so now I can lubricate and rebuild. Thanks.

Dec 9th, 2019, 10:53	#1
Thowdfella Thowdfella Last Online: Jul 23rd, 2022 09:04 Join Date: Feb 2019 Location: Chorley	Distributor springs I have a122s 1966 and I have removed the distributor because when I turn the rotor arm against the springs, it then returns but you can then move it back a bit further. Looking into the distributor haveing removed the base plate, one spring is longer than the other and there is a gap on the longer spring between the spring post and the spring loop. Does anyone know if the springs should be different? Also I am having great difficulty finding new springs so help would be appreciated.

Dec 9th, 2019, 11:05	#2
Ron Kwas Premier Member Last Online: Today 12:21 Join Date: Jul 2007 Location: Connecticut, USA	Tf; Springs for centrifugal advance are indeed different, in order to present a given force from idle (heavier spring simply slides on its extended end-loop), and at a certain elevated RPM, second heavier spring runs into the end of its end-loop, and starts to add its force against the advance rotation. In this way, a two slope advance curve, as shown here, is implemented: Source: https://www.sw-em.com/Volvo%20Igniti...e_Spark_Timing If cent. advance is not returning smoothly or fully, I'd start by cleaning and lubing all pivoting and sliding areas of the assembly. Good Hunting!

Dec 9th, 2019, 11:23	#3
Thowdfella Thowdfella Last Online: Jul 23rd, 2022 09:04 Join Date: Feb 2019 Location: Chorley	Thanks for your knowledgable reply. That reassures me so now I can lubricate and rebuild. Thanks.

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