Plymouth Owners Club

General Category => Technical Discussion => Topic started by: Pauls408 on November 26, 2022, 10:52:42 AM

Title: P15 radiator support mount
Post by: Pauls408 on November 26, 2022, 10:52:42 AM
I am restoring my 1946 Plymouth Special Deluxe club coupe. Currently, I am working on restoring the radiator and radiator support. When I took off the radiator support assembly there are 2 steel plates with the "U" shaped slots for the mounting bolts. The plate with the shock insulating material was on top and the other plate without any insulating material was under it. The 2 nuts lock washers and flat washers were bolted on to the bolts in the underside of the frame in the access hole. My question is should the plate without the insulating material be mounted in the underside of the frame instead of where it is on the topside of the frame under the plate with the insulating material?
Title: Re: P15 radiator support mount
Post by: TodFitch on November 26, 2022, 10:43:24 PM
I don't know the answer to your question but I think someone on the P15-D24 forum might. Https://www.p15-d24.com
Title: Re: P15 radiator support mount
Post by: Lindsay McConnell on November 27, 2022, 10:43:54 AM
On both my 41's that material was on the topside.
Title: Re: P15 radiator support mount
Post by: Pauls408 on November 27, 2022, 03:52:50 PM
Lindsay, can you tell me is the second steel plate is mounted underneath the frame?
Title: Re: P15 radiator support mount
Post by: Pauls408 on November 28, 2022, 09:13:16 AM
Ok Lindsay, that answers my question. thank you very much
Title: Re: P15 radiator support mount
Post by: Lindsay McConnell on November 28, 2022, 10:41:59 AM
Both my plates were sandwiched, together. I THINK I can remember having a parts car that had three plates...Not certain as to why, but I remember thinking just how strange...
Title: Re: P15 radiator support mount
Post by: Pauls408 on November 28, 2022, 06:49:23 PM
Well the closest I could find was a rubber shock pad for a '48-'54 Ford F1 pickup. It looks like the technology for that time period was the rubber shock mount.

This part is .250" thick. I don't know how thick the original shock mount rubber was.

With both plates, this rubber shock mount, the nut, the lock washer and the flat washer and the frame thickness,the total thickness is 1.3125", the bolt length is 1.5".

That leaves about 3 threads on the end of the bolt when everything is sandwiched together.

So I'm perplexed.
Title: Re: P15 radiator support mount
Post by: Pauls408 on December 13, 2022, 10:16:15 AM
I put the radiator support plates and shock spacer back together with the rubber shock spacer between both steel plates and mounted the radiator support on top. I had maybe 2 threads below the end of the nuts. I waited a couple of days and retightened the nuts. This made another thread closer to the end of the nut. Close enough for now.