Dennis Detweiler Posted July 24, 2018 Report Share Posted July 24, 2018 (edited) The advance diaphragm is shot on my 39. Where do I buy one? Autolite part# IGS-4103A-1. I think this is the correct part number? Distributor model IGS4203. It's likely the reason I had to keep the choke partially engaged to make the engine run correctly. Edited July 24, 2018 by Dennis Detweiler more info Quote Link to comment Share on other sites More sharing options...
Jerry Roberts Posted July 24, 2018 Report Share Posted July 24, 2018 1 hour ago, Dennis Detweiler said: Distributor model IGS4203. Could your distributor number be IGS4203B-1 or IGS4203A-1 or IGS 4203-1 or IGS4203C-1 ? Quote Link to comment Share on other sites More sharing options...
Dennis Detweiler Posted July 24, 2018 Author Report Share Posted July 24, 2018 There are no numbers stamped into the plate after IGS-4203- There is a dash after the #3, but that's it? serial# is 7Y0000142 ?? Quote Link to comment Share on other sites More sharing options...
Dennis Detweiler Posted July 24, 2018 Author Report Share Posted July 24, 2018 Just did some more googling with parts numbers. Mopar vacuum pod for 1935-41 shows part# 852-056. Atlas part# 865-060 for 1935-41. Are the vacuum pods all the same from 1935-41? Quote Link to comment Share on other sites More sharing options...
Jerry Roberts Posted July 24, 2018 Report Share Posted July 24, 2018 My Auto-Lite book doesn't show your number , only the numbers that I posted above . The Auto-Lite part number for the distributors that I posted is VC2082R for the vacuum advance . There is one on ebay eBay item number: 153112284420 is it corerect ? I don't know . Also your distributor number isn't listed under 1939 Plymouth so it must have been changed out . The distributor numbers that I posted are for 1942 Dodge , 1941 Dodge , 1946 - 1947 Dodge truck , 1942 Plymouth . Several of the guys have sent their vacuum advances out for rebuilding . If you do a search you can find out where they were sent . Quote Link to comment Share on other sites More sharing options...
Dennis Detweiler Posted July 24, 2018 Author Report Share Posted July 24, 2018 The engine serial numbers shows it to be the correct (original) engine for my 39. Someone must have installed a later model distributor into it. The VC2082R is for !942-48? I hesitate to purchase an NOS vacuum pod. The diaphragm may be dried out and end up with the same problem unless the seller can guarantee that it works? The ebay NOS is the same cost as a rebuilt. Any input appreciated. Quote Link to comment Share on other sites More sharing options...
Jerry Roberts Posted July 25, 2018 Report Share Posted July 25, 2018 3 hours ago, Dennis Detweiler said: The VC2082R is for !942-48? It doesn't work that way . There are a lot of cars and trucks in those years that VC2082R doesn't include . Also there are many other numbered vacuum advances included in those years . Quote Link to comment Share on other sites More sharing options...
Silverdome Posted July 25, 2018 Report Share Posted July 25, 2018 Try Robert's Motor Parts or Andy Bernbaum's they sell rebuilt ones or will rebuild yours for around $70.00 I believe. Quote Link to comment Share on other sites More sharing options...
desoto1939 Posted July 26, 2018 Report Share Posted July 26, 2018 Also try ebay they do get listed. rich Hartung desoto1939@aol.com Quote Link to comment Share on other sites More sharing options...
48Windsor Posted July 26, 2018 Report Share Posted July 26, 2018 Had mine rebuilt at Terrill Machine De Leon Tx Quote Link to comment Share on other sites More sharing options...
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