1936 120 Point Issues

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Sams1936Packard
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Joined: Sun Apr 12, 2020 10:58 am

1936 120 Point Issues

Post by Sams1936Packard » Sun Nov 08, 2020 2:57 pm

Hi, quite often I need to fiddle with the points that control cylinders 1 2 7 8. There will be some spark there but apparently not enough. After I file and adjust it will be fine for a while then back to power on only 3 4 5 6. Any suggestions? Thanks, Jack

Dave Czirr
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Location: New Jersey

Re: 1936 120 Point Issues

Post by Dave Czirr » Sun Nov 08, 2020 5:16 pm

Possibly a failing ignition condenser, also possibly a poor ground connection. I'd install new points and condenser(s), carefully check all wire connections and connectors. Probably a good time to just pull the distributor and check it out fully, shaft, bushings, centrifugal and vacuum advances, etc. There is a primer on checking distributors in the "Packards in the Media" section.

viewtopic.php?f=14&t=861

Sams1936Packard
Posts: 20
Joined: Sun Apr 12, 2020 10:58 am

Re: 1936 120 Point Issues

Post by Sams1936Packard » Mon Nov 09, 2020 11:27 am

Thanks Dave.

Dave Czirr
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Re: 1936 120 Point Issues

Post by Dave Czirr » Mon Nov 09, 2020 4:00 pm

I find NAPA/Echlin condenser AL 869 to be just about a universal condenser, I've successfully used in many different applications, including the dual point ignition in my '34 Packard. Give it a try.

Sams1936Packard
Posts: 20
Joined: Sun Apr 12, 2020 10:58 am

Re: 1936 120 Point Issues

Post by Sams1936Packard » Sun Nov 15, 2020 11:55 am

Dave, I thought I had checked shaft play at some point but apparently had not, the shaft has a lot of movement. Someone mentioned to me that I could use a distributor from a 1937 to get away from the dual points. Any recommendations on which way to go? Rebuild current unit, buy good dual point unit or look for a single point?

Thank you, Jack

Sams1936Packard
Posts: 20
Joined: Sun Apr 12, 2020 10:58 am

Re: 1936 120 Point Issues

Post by Sams1936Packard » Sun Nov 15, 2020 12:01 pm

PS, I've never rebuilt a distributor before, any big deal to it?

Dave Czirr
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Joined: Tue Jun 16, 2009 5:30 am
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Re: 1936 120 Point Issues

Post by Dave Czirr » Sun Nov 15, 2020 3:27 pm

Worn distributor bushings, why am I not surprised - probably the most ignored component for routine lubrication and maintenance. See the article I've posted a link to below.

I'm a purist and believe strongly in keeping these cars true to their original factory configuration. Now that you know the likely reason you couldn't hold point adjustment, my opinion would be that there is no need to mongrelize your car, so keep it authentic. If you have a decent home shop and can deal with pressing, burnishing and perhaps reaming bushings, then consider a rebuild yourself but note that rarely would home shops have distributor test beds to measure and adjust centrifugal and vacuum advance curves. For this you'd be sending it to a specialist so maybe you should consider that for the entire job. When my own unit is in basically sound condition I'd lean towards having my own rebuilt versus buying a rebuilt unit which might have a murky history.

Several good shops do this work, check for contacts in hobby publications. I can recommend AER in Grand Ledge MI, but be prepared for an extended delivery schedule.

viewtopic.php?f=14&t=861

Sams1936Packard
Posts: 20
Joined: Sun Apr 12, 2020 10:58 am

Re: 1936 120 Point Issues

Post by Sams1936Packard » Tue Nov 17, 2020 3:56 pm

Dave, no worries, I'm a purist as well and will heed your advice. I'll replace the bushings and make sure everything else moves freely. If it runs good we're in business. Thanks for taking the time. Stay well, Jack

Sams1936Packard
Posts: 20
Joined: Sun Apr 12, 2020 10:58 am

Re: 1936 120 Point Issues

Post by Sams1936Packard » Sat Dec 12, 2020 12:44 pm

Dave, any idea what diameter the roll pin is? Looks like a solid pin. Was peened over to hold it in. Filed off peening but cannot get it to budge using a 1/8" drift punch.

Any idea where to procure a replacement?

Thanks,

Jack

Dave Czirr
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Joined: Tue Jun 16, 2009 5:30 am
Location: New Jersey

Re: 1936 120 Point Issues

Post by Dave Czirr » Sat Dec 12, 2020 3:12 pm

Don't know about that specific pin but generally they are just common industrial hardware. I'm sure McMaster-Carr and MSC have them though you'll probably have to buy a box of 50. My local ACE Hardware has a good assortment of types s and sizes available individually. You might check it with a file to see if it's hardened.

You might check the part book, it might give a dimensional description. Also remember that if the pin happens ti be a taper pin it will only come out and install in one direction.

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