Peter R.

Early Cadillac Distributor Cap Reproduction

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We decided to reproduce early 4 cyl. Cadillac distributor caps.

Anyone out there interested in caps?

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8 hours ago, Peter R. said:

We decided to reproduce early 4 cyl. Cadillac distributor caps.

Anyone out there interested in caps?


When I had my 1914, five years ago, they were easy to find.

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Does this cap interchange with anything else?  Delco?

Al

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Posted (edited)

Al,

We will make two different caps with one steel mold.

These two caps will service the following Delco 4 cyl. "Twist'n'Lock" caps:

 

Delco # 11194 & 12281

1914-15 Buick

1913-15 Cole

1913 Hudson

1914-15 Moon

1913-15 Oakland

1914-15 Oldsmobile

1913-15 Paterson

1915 Westcott

 

Delco # 11250

1913 Cadillac

 

Delco # 11643

1911-12 Cadillac

 

Delco # 11644

1914 Cadillac

1916 Ahrens Fox

 

Delco # 12851

1917-18 Dodge

 

Delco # 11745 & 13852

1916-18 Buick

1916 Davis

1916-17 Elcar

1919 Essex

1917 GMC Truck

1918 Nash Truck

1916 Oakland

1916 Oldsmobile

1919 Seagrave

1918-19 Stutz

 

The caps will be quality reproductions made of Bakelite.

Edited by Peter R. (see edit history)
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Thanks for including the other applications for the reproduced caps you will be involved with.  That information may help other antique automobile enthusiasts as well.  I will send you a PM to discuss further.

Al

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I found a total of 8 different Delco «Twist’n’Lock» type caps that had been used on cars and trucks from 1911 to 1919:

 

# 11194

# 11250

# 11643

# 11644

# 11745

# 12281

# 12851

# 13852

 

These caps can be divided into 3 basic styles:

  • Early 1911-14 style - Cap # 11194, 11250, 11643 and 11644

  • 1915-16 style - Cap # 11745 and 12281

  • Late 1917-19 style - Cap # 12851 and 13852

 

Pictures tell more than thousand words – see for yourself below.

 

Note the position of the locking notch. On some caps it is located between two terminals and on some it is in line with a terminal.

 

When going through my parts books I noticed that sometimes there are two different caps listed for a particular car application. For example 1916-18 Buick. In earlier books I find cap # 11745 to be correct on a 1916 Buick and in later books it says # 13852. Cap # 11745 is a 1915-16 style cap and # 13852 is a later 1917-19 style cap. So I believe when someone bought a new Buick in 1916, the car was equipped with a # 11745 cap and 1917 cars were equipped with the superseding cap # 13852. If a 1916 Buick owner needed a replacement in 1917 he must have gotten a # 13852 cap once # 11745 stock was exhausted. I may be wrong but it seems obvious to me.

 

However, I think the best solution would be to reproduce a basic 1915-16 style cap and finish it with different locking notch positions. In other words, we reproduce caps # 11745 and # 12281, which can be used on 1911-14 Cadillacs as well (# 12281). Caps used on 1914 Cadillacs might need a slight modification.

 

Hope this sheds some light on the topic.

 

Any comments, concerns or questions appreciated.

 

11250.jpg

11643.jpg

11644.jpg

12281.jpg

12851.jpg

13852.jpg

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Posted (edited)

From the photos, it looks like the notches are in different spots related to number one. Remember many early cars distributor housings are fixed, and can not be turned to get the timing correct like a modern post war distributor. If done well, and price is reasonable, you should not have much problem selling them. Material is critical, and many people are using epoxy resin to make caps..........much of what I see isn't well done. Also incorrect color is often off putting to many people. 

Edited by edinmass (see edit history)

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Thanks for the hint. I forgot to mention that we won't number the terminals because of different firing orders or directions of rotation. Some aftermarket ignition parts manufacturer such as Gilfillan etc. leave away terminal numbers too so they can cover two part numbers with one cap in order to save cost. As an example, Auto-Lite caps IGH-1029, IGH-1045, IGH-1063 and IGH-(Cord V8 Supercharged - I forgot the number) are physically the same caps. The only difference seems to be the terminal numbers.

Turning a distributor housing doesn’t change the relative position of a rotor tip to the cap contact when a breaker point separates (a movable breaker plate will). Old distributors usually have movable cams to set timing. Interesting to see on the above cap # 13852 picture is that someone modified the cap by adding a second locking notch to it so it can be used on a Cadillac or 1914-15 Buick etc.

 

I’m aware of them epoxy resin reproductions that are currently flooding the market. We’re not doing phenolic resin repros. Our caps are quality reproductions made of Bakelite. We have all necessary equipment to do professional Bakelite reproductions. So far we have made around 15 different caps, rotors, fuse boxes etc. The caps are being pressed in a heated steel mold. Of course it’s a huge effort and the manufacturing of a steel mold is expensive but it’s worth it. The price of a cap largely depends on how many caps we can sell and how complicated a cap is. This particular cap is not complicated and easy to reproduce. So I expect it to be fairly cheap compared with the price of a NOS cap.  

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I have already reproduced these caps and have several left for sale.    This project was done about 5 - 7 years ago and I have sold several with no complaints.   Email me for details.

 

Tom 

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The similar 6 cylinder caps would have a big following.......for Pierce Arrows and Packards of the 1920's. Would love to see a YouTube video of a cap that is in production.

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Posted (edited)

We can virtually reproduce any distributor cap to highest standards if there's a demand.

 

See how a Bosch ZR6 two spark magneto cap is being pressed:

 

Edited by Peter R. (see edit history)

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I would be interested in at least one but I would have to have some idea of the price before I comitt.

 

Henry Sorensen

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Peter, video is fantastic. And the process is very impressive. I would love to visit the plant and see it for myself. 

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Peter, have  you considered producing  distributor . Caps  for early twenties  4 cyclinder Buicks ? 

Norm

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On 6/9/2020 at 12:56 PM, Peter R. said:

We decided to reproduce early 4 cyl. Cadillac distributor caps.

Anyone out there interested in caps?

I am definitely interested in a cap.  If you can give me a solid price I will place my order immediatly.

 

Henry Sorensen

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