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10-11-2021, 05:07 PM | #1 |
Junior Member
Join Date: Sep 2021
Posts: 4
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changing points in an original style 1931 distributor
I'm trying to change points in the '31 for the first time. It has the original style points that come in two pieces. the moving side is on a post with a 5/16" nut on it but it looks like there is also a nut on the bottom side of the distributor plate that turns too if it is not held. Do you have to remove the entire top plate in order to change points? All of the videos and write ups online show the updated, one piece point sets like used in the 50s 60s and 70s that I'm all too familiar with. Any assistance would be appreciated.
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10-11-2021, 05:51 PM | #2 |
Senior Member
Join Date: Aug 2021
Location: alberta canada
Posts: 585
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Re: changing points in an original style 1931 distributor
the points plate has to come off to do a points change.
-remove the points cam -remove the timing rod that goes to the colom -twist the top plate and it will be free from the distributor body -turn it over, carefull there is a wire on it -this will give you access to the nut on the post that holds the points -replace the points and hook up the wire -reinstall the top plate into the distributor housing. -install the points cam -set the point -set the timing. |
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10-11-2021, 06:00 PM | #3 |
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Join Date: Sep 2021
Posts: 4
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Re: changing points in an original style 1931 distributor
Many thanks. I thought that was it but it seemed too complicated for what should be a simple task. No wonder the one piece point assembly was developed.
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10-11-2021, 06:00 PM | #4 |
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Join Date: Aug 2021
Location: alberta canada
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Re: changing points in an original style 1931 distributor
i have had very little success with modern style points because
most that you buy have a plastic cam follower, not bakelite. the follower is usually riveted on and that place gives a place of high resistance after a while this makes heat and melts the plastic follower. most will tell you that the system needs some sort of resister as that is what caused this, Wrong, poor quality points construction. if you have access to good none plastic points the modern point set up is ok, but i have asked a few suppliers and they look at me like i am from Mars so i gave up using and only use the original style now. stay with the original, properly set up that new set of points will last as long as you own the car. ou |
10-11-2021, 06:05 PM | #5 |
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Join Date: Aug 2021
Location: alberta canada
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Re: changing points in an original style 1931 distributor
make sure you put all the little washers back. there is a little insulated washer on the bottom don't forget it.
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10-11-2021, 06:15 PM | #6 |
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Join Date: Aug 2021
Location: alberta canada
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Re: changing points in an original style 1931 distributor
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10-11-2021, 07:47 PM | #7 |
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Join Date: May 2010
Location: Oregon
Posts: 5,961
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Re: changing points in an original style 1931 distributor
You didn't say what is promoting you to change the points. Some folk just change points because. Points should and usually last until they are gone. Cleaning, adjustment, and the proper coil/condenser relationship keeps them working well. Polish the cam while it is off and lube it properly, that will help slow wear on the ramp block on the points.
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10-12-2021, 12:20 PM | #8 |
Junior Member
Join Date: Sep 2021
Posts: 4
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Re: changing points in an original style 1931 distributor
They look like they are in bad shape. The gap is wrong and the follower on the points looks worn. I'll know better when I get them off. I also want to look at the cam lobes. They look worn.
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10-12-2021, 12:30 PM | #9 |
Senior Member
Join Date: May 2010
Location: So Cal
Posts: 8,747
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Re: changing points in an original style 1931 distributor
If you are using new production point the contacts will probably not line up.
Bratton's sells a points block that will correct this. https://www.brattons.com/MACHINED-DI...uctinfo/17351/ |
10-12-2021, 12:59 PM | #10 |
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Join Date: May 2010
Location: on the Littlefield
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Re: changing points in an original style 1931 distributor
I believe that many points are changed just about when the rubbing block is seated to the cam.
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