RE: [Chrysler300] 1961 300 G

["Dan Watts" <dan.watts@xxxxxxxxxxx>]

To All in 300 Land.

 

A word on plating and processing.

Black Oxide is a surface treatment that doesn't change the texture or
dimensional characteristics of a machined (or ground) surface.  Gage and
inspection tooling is often "black oxide" coated. Black oxide exhibits poor
corrosion resistance.  Newly B.O.ed parts are generally oiled after process.

 

Phosphate Coating (almost positive aka "Parkerizing") is a "non-metallic
coating" and produces detectable dimensional change.  The coating produces a
dull-matt -almost rough surface finish and may be applied after other
metallic plating has been applied. As I remember (it's been awhile)
phosphate coating is used in applications where friction and/or heat is a
consideration and may be used in conjunction with dry film lube. 

 

Cadmium and Zinc plating both produce a "white" metallic surface finish.
They both produce dimensional change when plated that can range from .0001
per side up to .005 or thicker per side.  (The customer can specify the
thickness.)  For some reason, gov. spec.s require certain fastener parts to
remain "white" while the bulk of parts cad plated will end up yellow.  This
is because they are dipped in a chem. film irridite after plating.  The
iridite doesn't produce any dimensional change to the previously cad plated
surface.

 

The really good news is that most plating shops with aircraft/aerospace
experience can either perform the above plating services or send you to
someone that can.

Danny Watts

300F

300G

 

P.S..A Big Word of Caution:  If you find yourself electro-plating parts
(cad, zinc, chrome, nickel, etc) that have high hardness (over 40C on a
Rockwell scale) it is important to hydrogen embrittlement relieve the parts
after plating.  This entails baking the plated parts at 375 degrees F for a
minimum of 3 hours.  This allows the hydrogen, produced by plating, to
escape "through" the plating, and eliminate future cracking/disentregation
problems in the parent metal. Any steel heat treater and many platers can
perform the Rockwell test.

  _____  

From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On
Behalf Of lettercars@xxxxxxx
Sent: Sunday, November 25, 2007 5:02 PM
To: tomas.turovaara@xxxxxxxxx; Chrysler300@xxxxxxxxxxxxxxx
Subject: Re: [Chrysler300] 1961 300 G

 


Hi Tomas and All:
According to Chrysler drawings, most of these linkage members has optional 
finishes. For ALL linkage components, one of the options is "C.S.T. Pro.
Std. 
#80". C.S.T. stands for "Chemical Surface Treatment" and Process Standard 
#80 is Phosphate Coating. This is what we always refered to the dark oily 
finish of fasteners, etc. when I was at Chrysler. It may well be the same as

"Parkerizing". Eastwood calls their blackening finish "Black Oxide". That is

what I used on my 300F because it gives roughly the same appearance I 
remember. The other options for SOME components were Cadmium Plate, P.S.
#182B and 
Zinc Plate, P.S. #79B. 

SUMMARY OF FINISH OPTIONS:
Bellcrank, (Assy, Intake Manifold Throttle Shaft) PN 2121745: All three
Lever, Intake Manifold Throttle Shaft, PN 1947544: All Three
Rod, Bellcrank to Carbuetor, PN 2128757: All Three
Bracket, Accel. Pedal Return Spring, PN 2129668 (300G and late 300Fs): 
All three
Bellcrank to Carb Adj. Link (Slotted end piece), PN 2129569: Just Cad 
and CST
Rod from throttle bellcrank on body to intake bellcrank, PN 2121159: 
Just Cad and CST
Assy, Accel. Shaft & Bracket (part bolted to body), PN 2121748: ONLY 
the CST

I do not have drawings---or at least not handy---of the linkage to the 
transmission, but feel confident the CST finish would be appropriate. Of
course, 
for proper restoration, one should try to duplicate what your car came with 
originally. In my case, I had none of the original when I bought the car, so

went with the C.S.T. Phosphate (or faux phosphate) finish. The nut part 
numbers are not identified in the parts book, so it would be impossible to
state 
what Chrysler specified. In this case, do your best to determine what was 
original on your car or consult our Reference 300F on the web site. (Of
course 
you 300J and ram K owners don't have to worry about the above. Just paint 
it all Turquoise with the engine!)

Whew!!! I hope this is a help, and even more I hope it is decipherable 
after going thru the listserver.

300ly, Gil C.





In a message dated 11/25/2007 2:03:59 PM Eastern Standard Time, 
tomas.turovaara@ <mailto:tomas.turovaara%40telia.com> telia.com writes:

Name Tomas Turovaara

Address Kengisgatan 33
S-981 33 Kiruna
SWEDEN

Phone 46-980-14149 fax 46-980-66404
E-mail tomas.turovaara@ <mailto:tomas.turovaara%40telia.com> telia.com

Hi 300 club 
I have a questions about the linkage to 1961 Chrysler 300 G
Is all linkage black parkerized? 
The linkage to the transmission, all of the linkage to the carbs from the 
firewall to the carb even the nuts on the linkage

Thanks Tomas Turovaara

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