Author Topic: New (but correct) MC - painted black, bare, or ?  (Read 12462 times)

barsteel

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Re: New (but correct) MC - painted black, bare, or ?
« Reply #15 on: August 25, 2015, 03:44:59 PM »
The for sure survivors I've looked at have had the master cylinder painted. According to the latest new addition NCRS 68/69judging manual it states the following: "The master cylinder was painted a low-gloss or foundry black. A semi-circular machined area at the front of the casting was machined after painting and so should be natural finish. The flat at the front has PG stamped in it for power brake units and DC for manual brake units." And "The boss that the brake lines thread into is machined flat after painting and will be natural finish." JohnZ has stated “I was there in the assembly plants in the 60's, and Delco-Moraine painted the master cylinders and brake calipers black prior to machining; I never saw one unpainted.”
I purchased a late May69 power booster/master cylinder from Jere Stahl that had been given to him from Delco Moraine Engineering. On the production parts list sheet it calls for it to be painted black (see item 24).


Ok, now I'm a bit confused.  I ordered the MC and booster from Camaro Specialties (www.camaros.com), and their website, confirmed in a conversation with owner Bob, says that the '67 - '68 front power disc brake/rear drum MC should be coded "WT".

Is that the case?

Thanks...

Chris

cook_dw

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Re: New (but correct) MC - painted black, bare, or ?
« Reply #16 on: August 25, 2015, 04:06:04 PM »
67 & 8 are WT and 69 is US.

67 & 8 casting is also 346 and 69 is 309
Darrell Cook


If you have a 68 L78 or Z28 Camaro please contact me so I can add your vehicle to my database.

1968RSZ28

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ZLP955

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Re: New (but correct) MC - painted black, bare, or ?
« Reply #18 on: August 25, 2015, 10:30:25 PM »
Chris I think Chick's reference may be to Corvettes, as the quotation is from the NCRS Judging Manual.
Tim in Australia.
1969 04A Van Nuys Z/28. Cortez Silver, Dark Blue interior, VE3 bumper, Z21, Z23, D55/U17, D80, flat hood.
Sold at Clippinger Chevrolet in Covina, CA. Ex-E/MP at Lions Dragstrip in Long Beach.

68camaroz28

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Re: New (but correct) MC - painted black, bare, or ?
« Reply #19 on: August 25, 2015, 10:58:37 PM »
Chris I think Chick's reference may be to Corvettes, as the quotation is from the NCRS Judging Manual.

Exactly Tim! Probably should have not put that portion of the NCRS Corvette verbiage in. Sorry Chris! A side note, I find NCRS is a great tool to check on what is considered "normal", or "generally found", as they have been at it for a long time and have a great tool with judging manuals. Calipers are like the master cylinder, painted casting and then machined. :)
Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584

BULLITT65

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Re: New (but correct) MC - painted black, bare, or ?
« Reply #20 on: August 25, 2015, 11:50:06 PM »
That book sounds like it may be a good read. Is that NCRS judging manual in a PDF form we can download for free or do the NCRS Corvette guys charge $100 for it?
1969 garnet red Z/28 46k mile unrestored X77
-Looking for 3192477 (front) spiral shocks 3192851 (rear)
-Looking for an original LOF soft ray windshield
-Looking for original Delco side post negative battery cable part # 6297651AV

68camaroz28

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Re: New (but correct) MC - painted black, bare, or ?
« Reply #21 on: August 26, 2015, 01:33:57 AM »
That book sounds like it may be a good read. Is that NCRS judging manual in a PDF form we can download for free or do the NCRS Corvette guys charge $100 for it?
Corvette Carlisle is this later part of week (will be there Thursday thru Saturday) and I believe the judging manuals are 50 or $55 per copy. Its a 1" plus volume loaded with information so I think its worth it. I have both the 67 and 68/69 Corvette Judging Manuals.
Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584

paceme

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Re: New (but correct) MC - painted black, bare, or ?
« Reply #22 on: August 26, 2015, 01:45:33 AM »
The unrestored Camaros that I've owned and Vintage Certified have had remnants of flat black paint. As been mentioned the machine surface operation was done after paint and should be bare/natural.
Steve Shauger
Vintage Certification™ Program, Providing Recognition And Status To Unrestored Vehicles. Website www.vintagecertification.com
www.yenko.net- The Supercar Registry

ZLP955

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Re: New (but correct) MC - painted black, bare, or ?
« Reply #23 on: August 26, 2015, 04:33:52 AM »
Steve that's an interesting observation. Is it your opinion that the paint was flat from initial application, or possibly a higher gloss that has been lost over the years to appear flat today?
Tim in Australia.
1969 04A Van Nuys Z/28. Cortez Silver, Dark Blue interior, VE3 bumper, Z21, Z23, D55/U17, D80, flat hood.
Sold at Clippinger Chevrolet in Covina, CA. Ex-E/MP at Lions Dragstrip in Long Beach.

KurtS

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Re: New (but correct) MC - painted black, bare, or ?
« Reply #24 on: August 26, 2015, 05:27:12 AM »
It's pretty flat, via the protected confines of Corvairs.
Kurt S
CRG

ZLP955

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Re: New (but correct) MC - painted black, bare, or ?
« Reply #25 on: August 26, 2015, 09:52:30 AM »
Thanks Kurt
Tim in Australia.
1969 04A Van Nuys Z/28. Cortez Silver, Dark Blue interior, VE3 bumper, Z21, Z23, D55/U17, D80, flat hood.
Sold at Clippinger Chevrolet in Covina, CA. Ex-E/MP at Lions Dragstrip in Long Beach.

Dave Siltman

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Re: New (but correct) MC - painted black, bare, or ?
« Reply #26 on: August 29, 2015, 12:02:42 PM »
Kinda funny how things escalate incorrectly. How many times have you seen chalk marks and such that are totally bogus and incorrect? My theory is someone had a car at a show that had a nice presentation albeit technically "wrong". Then, onlookers gawk at the car, go home and make/change their car to appear like the one at the previous show....and then another group sees THAT car at cruise night and the snowball effect gets started. Who was the first person to INCORRECTLY install the dreaded FORD fan sticker on a CHEVY fan shroud? See what I am getting at here?????

TRLAND

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Re: New (but correct) MC - painted black, bare, or ?
« Reply #27 on: August 29, 2015, 12:39:03 PM »
Kinda funny how things escalate incorrectly. How many times have you seen chalk marks and such that are totally bogus and incorrect? My theory is someone had a car at a show that had a nice presentation albeit technically "wrong". Then, onlookers gawk at the car, go home and make/change their car to appear like the one at the previous show....and then another group sees THAT car at cruise night and the snowball effect gets started. Who was the first person to INCORRECTLY install the dreaded FORD fan sticker on a CHEVY fan shroud? See what I am getting at here?????

That's why this site and forum are such a great resource.
Mike in Northern Illinois
1967 RS 327

stovebolt

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Re: New (but correct) MC - painted black, bare, or ?
« Reply #28 on: August 31, 2015, 02:14:25 PM »
This photo, from the Chevrolet Quality Brake Service pamphlet dated July 1968, confirms what was said previously, that the master cylinder was painted black and prior to machining.

HawkX66

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Re: New (but correct) MC - painted black, bare, or ?
« Reply #29 on: August 31, 2015, 03:24:22 PM »
This photo, from the Chevrolet Quality Brake Service pamphlet dated July 1968, confirms what was said previously, that the master cylinder was painted black and prior to machining.
Is that a photo or an artist's rendition?
Dave
69 SS396 X66 L34 M21 BS
Z23 711 U17 Hugger Orange
Semper Fi! USMC 93-02