Ok now I see it on both posts. Not sure what the problem was.

Seems to me this problem could be solved with a vented cap unless I'm misunderstanding where the vacuum occurs.

Thanks for the update, Karl. Very interesting.

I'm not sure I understand your question though.

maybe this will work ... ?

https://www.latimes.com/socal/daily-pilot/news/story/2024-05-06/packard-show-drives-car-enthusiasts-to-hyatt-regency-newport-beach

With a lot of patience and a good friend with the right contacts, one of the last problems in the restoration of a component that was important to me was finally solved. I was looking for the original silencer. All inquiries in the last 2 years were initially unsuccessful. It also seemed unlikely to me that a silencer from 1924 could even be found. These components are the first to fall victim to rust. And it's common for owners of these 1920s models lines to opt for the replicas that fit the bill and are offered multiple times in the United States. However, it was important to me that the silencer corresponds to the original and ultimately reproduces the original sound of this model. Even though I couldn't get an original silencer anymore, I wanted a replica of the original that was at least very close in terms of construction and sound. The photos of the components from the spare parts lists show that this construction, which is delivered in individual parts, can certainly be rebuild. Also, I tried to find out the dimensions and details of this silencer. I had enlarged the photos from the spare parts list on my PC monitor so, that I could see the known diameter of the pipe... after the exhaust manifold (57mm >> 2 ¼")... could decrease at a suitable scale. Using this reference measurement I have I determined all other dimensions of the silencer based on the images that I copied from YouTube videos, showing the attachment points/brackets of the silencer to the frame and thus the length of the component. The measurement was very close to the measurement. I determined the number and arrangement of the holes in the inner pipes was very difficult because they were relatively small on the Parts List page. Since I still didn't get any feedback from the internet, I decided to build the silencer anyway based on the dimensions I found and continued to try to get the data on the important resonance pipes with the holes, the number and position of which in the silencer are crucial for the function and sound of the silencer... the very things that were essentially important to me.

Unfortunately, attempts by friends here in the forum were also unsuccessful, although there was someone who had this data but didn't give it out because he copied and sold this silencer. He believed that sharing the data could harm his company. Now, I don't know how many 1924-25 models there are whose owners still need this original exhaust, or how many of them would be able and willing to recreate this exhaust themselves. I think you could count them on one one hand for the next decades. Anyway... at a classic car meeting here in Germany I told my friend about my problems with this silencer. He owns two Packards of the 30th here in Germany and is very active in the US Packard scene on the West Coast. Prof. Wolfgang Eisert is a regular guest at the Packard International Meetings and also a judge at these on the West Coast.

https://deref-gmx.net/mail/client/EclqIBj6p-8/dereferrer/?redirectUrl=https%3A%2F%2Fwww.latimes.com%2Fsocal%2Fdaily-pilot%2Fnews%2Fstory%2F2024-05-06%2Fpackard-show-drives-car-enthusiasts-to-hyatt-regency-newport-beach

He used his contacts and asked someone who is also known here in this forum. He couldn't get the data for this muffler, but he knew someone who had some cars from the 1920s and who he believed still had parts for these cars. In fact, it turned out that this acquaintance actually had one of these mufflers. Thanks Haven…. complete, albeit in a pitiful condition, but therefore also perfect to save the missing data and thus enable me to create an actual “original replica”. My friend Wolfgang quickly packed the Muffler into his suitcase on his next visit to California and brought it with him to Germany. But it gets even better !!! I immediately disassembled the muffler to find out how closely it would fit with the components I had already purchased for my own replica. And it's hard to believe that the original covers on the ends of the muffler fit exactly over/into the pipes that I determined and bought myself based on the calculated dimensions. So I was very accurate to the original with my measurements. I would not have expected that. Here are the first pictures.


I will further describe the construction of the muffler here in my blog and show it in the picture. Of course, I will also make all the data for the components available here in the blog so that anyone who has the ambition can recreate the original muffler themselves. Because I believe this information should be available to all Packard Enthusiasts seeking to preserve these historically significant vehicles of this era. Everything else will come soon, when the rims are finished and the frame is back on the wheels, allowing the engine to be installed and tested.

Karl

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Home away from Home, Instead of an attachment it was added below the text with a yellow - tan background. It doesn't show?

I tried to add the attachment again here.

Thanks for your interest,

Bob

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I know Clint Moore was here.

Even in 1952 the question seemed unresolved.





8x10 black and white Packard Co. file photograph of a 1952 Packard Pelican, hood ornament, right side view. Inscribed on photo back; accessories, hood ornaments, cormorant, restyled pelican emblem, standard hood ornament on 1952 Packard 250, 300, 400, twenty-fifth series models.

Item # EB01e895

Photo courtesy of the Detroit Public Library, National Automotive History Collection and used with permission.

Reproduction Permission Form and Price List

Deal of the day here.

https://www.facebook.com/marketplace/item/1129301295043090/?ref=search&referral_code=null&referral_story_type=post

'39 Super 8 sedan, $4750. Wow.

Dads 56 (Sean), for including this '55 Clipper Deluxe Touring Sedan in the Registry.

Although it's in a wrecking yard, there appears to be some salvageable parts still on it before it goes to rhe crusher.
again for saving part/s (pun intended) of Packard history.

Thanks to Bob, Wib, Ross, and Flackmaster for help locating and coordinating the transportation of “new” fenders! On Monday, my son and daughter-in-law drove down to Milwaukee. They got to see a few nice Packards and pick up the fenders for me. I’ll get up there sometime in January to spend some time with the kids and bring the fenders back to KC.