[Chrysler300] Lead sleds and 6-Volt starter relays

["Rich Barber" <c300@xxxxxxx>]

>From the net:

The lead used in lead loading is actually a mixture of lead and tin. The
required proportions for motor vehicle work are 70% lead and 30% tin. This
sort of lead has a melting point of about 500 degrees F. Remember these
proportions, as you may be tempted to use other types of solder, such as
plumbers' solder which may have different proportions. The type of lead you
need is frequently advertised in the motoring magazines or you could get it
from specialist motor factors.

This was confirmed to be about 495 degrees F at a second website:  

http://www.chemguide.co.uk/physical/phaseeqia/snpb.html

That site shows a eutectic mixture of 38% lead and 62% tin melts at 361
degrees F (183 degrees C), so the % mix is critical when dealing with powder
coating furnaces.  Mixtures of between 20% to 43% lead will melt under 400
degrees F.  Current lead-free body solders apparently melt at higher
temperatures.

Anyone knowledgeable of what parts of a 1955 Chrysler 300 were originally
leaded at the factory?  And whether the 70/30 mix was typical?

BTW:  A nearby vendor has obtained a small supply of 6-Volt starter relays
for the 1955 Chryslers, De Sotos and 6-Volt Imperials.  I have ordered two
of the six he obtained and will let you know how they work and look.  He
indicates they have varying degrees of rust, but they can be bead blasted
and shot gloss black.  I also have a source of the insulating paperboard
needed to replace the deteriorated material used to insulate the terminals
on top of the relay.  Its intended use is in Diesel starters and is a light
blue-gray.  Fairly easy to cut, fold and perforate for Chrysler relay
service.

C-300'ly,
Rich Barber
1955 Chrysler 300

Tech-talk:  A eutectic mixture of metals is that % mixture that melts at the
lowest melting point of any blend of the two metals.  Almost always, this
temperature is LOWER than the melting point of either pure metal.


-----Original Message-----
From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On
Behalf Of Gary Barker
Sent: Friday, March 07, 2008 4:51 PM
To: Chrysler300@xxxxxxxxxxxxxxx; Bob Jasinski; Gary Holm
Subject: Re: [Chrysler300] 300F puzzler

I do my own Powder Coating and My system requires 400 degrees for 20 
minutes.  I don't know off of the top of my head what body lead melts at  I 
can look it up.    Gary Barker

--------------------------------------------------
From: "Gary Holm" <gholm@xxxxxxxxxxx>
Sent: Thursday, March 06, 2008 5:36 PM
To: <Chrysler300@xxxxxxxxxxxxxxx>; "Bob Jasinski" <rpjasin@xxxxxxxxxxx>
Subject: Re: [Chrysler300] 300F puzzler

> 300 Group;  When I rebuilt my G 's dash, I was having it powder coated and

> they called to say the process melted the lead out of the ashtray area and

> needed a fix.  My body guy was good enough tho fill it by welding it and 
> brazing.  I did not even think of the lead melting when heating the 
> powder coating.  Gary with a big G
>  ----- Original Message ----- 
>  From: Bob Jasinski
>  To: Chrysler300@xxxxxxxxxxxxxxx
>  Sent: Thursday, March 06, 2008 12:41 PM
>  Subject: RE: [Chrysler300] 300F puzzler
>
>
>  It is the ashtray for the non-300 Chryslers. The dash used is the stock 
> dash
>  from the other Chryslers and modified for the 300 letter car. Since the
>  ashtray in the 300F was in the console over the trans hump, it was not
>  needed in the dash and had to be filled in to look right. The '61 is the
>  same way, and I believe the '62 as well.
>
>  I can still see the factory sanding marks in the fill plate on mine, as 
> my
>  dash has never been repainted.
>
>  Bob J
>  _____
>
>  From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On
>  Behalf Of Larry Nirenberg
>  Sent: Thursday, March 06, 2008 12:20 PM
>  To: Chrysler300@xxxxxxxxxxxxxxx
>  Subject: [Chrysler300] 300F puzzler
>
>  Took the dash out of the car today for painting and general cleaning up. 
> On
>  the lower dash directly below the radio there was a door that had been
>  welded shut and the seams were filled and painted. Once the dash was out
>  and we looked at the backside the opening and door looked original and 
> not
>  cut in. I looked at a load of interior pics on the net and they were no
>  help. Anybody know what this might have been? Thanks in advance
>




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