Jim Rohn Posted June 7, 2009 Share Posted June 7, 2009 (edited) GUESSING early / mid 30's MoPar product of some sort, part number on bottom is 613723<img src=http://i8.photobucket.com/albums/a26/JimRohn/june/moparcapa.jpg><img src=http://i8.photobucket.com/albums/a26/JimRohn/june/moparcap.jpg><img src=http://i8.photobucket.com/albums/a26/JimRohn/june/moparcapbot.jpg><img src=http://i8.photobucket.com/albums/a26/JimRohn/june/moparno.jpg>as always, THANK YOU ! ! Edited June 28, 2009 by Jim Rohn (see edit history) Link to comment Share on other sites More sharing options...
keiser31 Posted June 7, 2009 Share Posted June 7, 2009 Very likely 1931 DeSoto standard cap. Link to comment Share on other sites More sharing options...
keiser31 Posted June 7, 2009 Share Posted June 7, 2009 Is it for sale? Link to comment Share on other sites More sharing options...
ply33 Posted June 7, 2009 Share Posted June 7, 2009 Definitely a Chrysler Product given that DPCP logo. And definitely from 1932-34 given the number size.It is my impression that Chrysler engineers got a block of part numbers assigned when working on an area. So an "assembly" might be built up of parts nnnn1, nnnn2 and nnnn3. Only the final assembled part would be made available for aftermarket parts sale. The number you show is on a casting and there are several other pieces that go onto that casting to make up the radiator cap assembly.613722, one digit off from the number shown, is the radiator cap "assembly" for the 1933 Plymouth PCXX (Standard 6). And the cap looks like the one for the 1933 Plymouth Standard 6. Link to comment Share on other sites More sharing options...
Jim Rohn Posted June 7, 2009 Author Share Posted June 7, 2009 thanks, that narrow it down somewill investigate those leadscan't find a 33 Plymouth that does not have the "standard" rad cap, all are ornate31 Desoto looks close, can't find a close upwill keep looking, thanks! Link to comment Share on other sites More sharing options...
Manuel Posted June 7, 2009 Share Posted June 7, 2009 Hi Ply33,I have been trying to work out Chry part nos for years.Did they sort them by item? Or by make/model. What about year built? Ford numbers are easy to figure once u understand the system.Manuel in Oz Link to comment Share on other sites More sharing options...
keiser31 Posted June 7, 2009 Share Posted June 7, 2009 I think ply33 is correct...now that I look closer, it looks like 1933 Plymouth standard cap. Link to comment Share on other sites More sharing options...
Steve Braverman Posted June 8, 2009 Share Posted June 8, 2009 1931 PA standard cap is very similar. I have one somewhere. I'll try to compare. Link to comment Share on other sites More sharing options...
ply33 Posted June 8, 2009 Share Posted June 8, 2009 <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Manuel</div><div class="ubbcode-body"> Hi Ply33,I have been trying to work out Chry part nos for years.Did they sort them by item? Or by make/model. What about year built? Ford numbers are easy to figure once u understand the system.Manuel in Oz </div></div>As near as I can tell, it is a simple sequence number system. The first part they designed was some low number (not sure if they started with 1 or not as the lowest numbers I recall in the 1928-33 master parts book are in the 40000 range). The next part was the next number up and so on.Generally you can get a feel for the year the part was first used by how big the number is. The low 600000 range is typical for parts first used in 1933 on Plymouth. 620000 for parts on the 1934 Plymouth. Link to comment Share on other sites More sharing options...
Guest 31coupe Posted June 21, 2009 Share Posted June 21, 2009 The Mopar cap is from a 1931-32 Plymouth PA. It is the cap that was used in place of the "Flying Lady" when you were away from your car. The number matches mine. Link to comment Share on other sites More sharing options...
Jim Rohn Posted June 28, 2009 Author Share Posted June 28, 2009 31coupe, i tried to reply to your PM but the new software reset everyones preferencesBTW, everyones preferences were reset by the change in the forum and none of you will be able to send or receive private messages without going in and changing all of your preferences again ...just a heads upOnce you change yours you will be able to communicate again31coupe, let me know when you do Link to comment Share on other sites More sharing options...
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