Author Topic: Brake Booster Check Valve..  (Read 10379 times)

bertfam

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Re: Brake Booster Check Valve..
« Reply #15 on: October 21, 2016, 03:09:10 PM »
Gary, you have a few options.

1. If you don't have your car judged, leave it "as-is". No one would probably even notice! (Unless it bugs you, then see 2 and 3 below!)
2. If you DO have your car judged, then you can leave the incorrect one on for driving and then install the original for judging only.
3. You can buy a "correct" repop from ZIP, but like I said above, you might want to have someone check it out first. It may have changed in the 3 years since the NCRS thread.

Ed

69Z28-RS

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Re: Brake Booster Check Valve..
« Reply #16 on: October 21, 2016, 05:00:10 PM »
Thanks Ed,

I've never had this car judged (it hasn't been driven or left my garage since 1980), but I do have a *goal* to get it reassembled one day (with all subsystems working again) and have it judged in a 'Preservation class', so you gave me a couple of good options..  :)
09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette, '60 Corvette, '72 Corvette
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

68camaroz28

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Re: Brake Booster Check Valve..
« Reply #17 on: October 21, 2016, 09:02:18 PM »
Thanks Ed,

I've never had this car judged (it hasn't been driven or left my garage since 1980), but I do have a *goal* to get it reassembled one day (with all subsystems working again) and have it judged in a 'Preservation class', so you gave me a couple of good options..  :)

Hi Gary! I purchased one of the more correct repro's and that one looked the part but was white instead of a more vanilla cream looking color that all of the originals had, but it was not thru Zip. With our L78 Nova survivor an original valve is in and it still works. I'd check the original to make sure the check valve is working (normally they do), put it in and forget about it. I actually found them rascals can be a pain to remove due to the design (fish hook kind of style) that assists with sealing but difficult to pull out. Easy to push in though! We have originals in all of our stuff other than the aforementioned repro. I will say this, nice originals can be difficult to find so if you come across one for a spare grab it.
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

ZLP955

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Re: Brake Booster Check Valve..
« Reply #18 on: October 21, 2016, 10:28:40 PM »
For a cheaper alternative to the ZIP-sourced check valve, read this: http://www.camaros.org/forum/index.php?topic=14483
Tim in Australia.
1969 04A Van Nuys Z/28. Cortez Silver, Dark Blue interior, VE3, Z21, Z23, D55/U17, D80, flat hood.
Sold at Clippinger Chevrolet in Covina, CA.
AHRA Formula Stock at Lions Dragstrip, NHRA E/MP at Pomona Raceway

janobyte

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Re: Brake Booster Check Valve..
« Reply #19 on: October 21, 2016, 10:50:59 PM »
Perhaps the "vanilla cream" due to dis-colorization secondary to under hood temperature and age ?

Jerry supplied a " correct" looking valve when he did my booster. I never remember re-placing mine, but doesn't look right. None the less, boxed up.

Relevant to one of your current posts Gary, Steve has my hold off valve at this moment,sort of trying to talk me into having my booster re-done...but I was pleased with CHP's work.
68 Z/28  born with: 302, drive line, etc..

bertfam

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Re: Brake Booster Check Valve..
« Reply #20 on: October 21, 2016, 11:07:00 PM »
I would agree that the originals would have been white and after many years they turn cream colored.

And HERE'S a direct link to the valve Tim posted.

Ed

ko-lek-tor

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Re: Brake Booster Check Valve..
« Reply #21 on: October 22, 2016, 12:35:40 AM »
That vendor said the application is 67-81. That may be true as far as fit&function, but I would like to know what years used that vendor's design, or appearance, of this valve? And I know this is not an exclusive Camaro part.
Bentley to friends :1969 SS/RS 396 owned 79
1969 SS 350 (sold)
1969 D.H.COPO replica 4spd. owned since 85
1967 302 4 spd 5.13

bertfam

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Re: Brake Booster Check Valve..
« Reply #22 on: October 22, 2016, 12:58:46 AM »
Quote
That vendor said the application is 67-81. That may be true as far as fit&function, but I would like to know what years used that vendor's design, or appearance, of this valve? And I know this is not an exclusive Camaro part.

Well, it's hard to narrow it down completely, but according to the P&A's, here's what they looked like, and the (approx) years and part numbers used.

Ed

68camaroz28

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Re: Brake Booster Check Valve..
« Reply #23 on: October 22, 2016, 01:09:28 AM »
I would agree that the originals would have been white and after many years they turn cream colored.

And HERE'S a direct link to the valve Tim posted.

Ed


I respectfully disagree on that as the one I posted was a NOS piece on a May 1968 unit purchased from Stahl Headers when they went out of business. The unit had never been installed so that is what the color looked like. Every unit I've ever looked at was a cream looking color and never white. If they went from white to cream color over time they sure were similar...... I'm confident from what I've reviewed this is how they looked new back then.



This was the Engineering Change Sheet with the unit I purchased.


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

68camaroz28

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Re: Brake Booster Check Valve..
« Reply #24 on: October 22, 2016, 01:17:31 AM »
Quote
That vendor said the application is 67-81. That may be true as far as fit&function, but I would like to know what years used that vendor's design, or appearance, of this valve? And I know this is not an exclusive Camaro part.

Well, it's hard to narrow it down completely, but according to the P&A's, here's what they looked like, and the (approx) years and part numbers used.

Ed

That picture is my picture I posted on my build thread. The reason the correct one (middle) looks more white in the middle area is I tried to lightly sand it and it took the coating off and the base material is white looking. That is why I wanted a NOS one and still have all three of those Ed posted.
This is my picture I posted!

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

ko-lek-tor

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Re: Brake Booster Check Valve..
« Reply #25 on: October 22, 2016, 02:10:37 AM »
And a great pic it is Chick. Thanks Ed for assigning dates to that pic. I only have had used junk, but have never seen any color except the off white as pictured. I do know the valves for 64-71 (middle one pictured) have a tendency to deteriorate and get a chalky white appearance and that nice examples I have seen go for prices elsewhere on the net similar to like what was asked in the OP, but not for THAT one, of course.
Bentley to friends :1969 SS/RS 396 owned 79
1969 SS 350 (sold)
1969 D.H.COPO replica 4spd. owned since 85
1967 302 4 spd 5.13

69Z28-RS

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Re: Brake Booster Check Valve..
« Reply #26 on: October 22, 2016, 03:35:15 AM »
Shown in the photos below are:

1) The check valve installed by Steve Grigori when he rebuilt my booster,
2) View 1 of my original check valve returned to me when he rebuilt the unit
3) View 2 of my original check valve as returned to me

Some *idiot* (probably me?) had spray bombed my booster back in the '70's, so there was black overspray on the original which I attempted to clean off today before the photo.  One can see from the protected portion (that went into the booster) that the proper color is 'cream'.
09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette, '60 Corvette, '72 Corvette
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

bertfam

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Re: Brake Booster Check Valve..
« Reply #27 on: October 22, 2016, 03:03:31 PM »
I will concede that they probably weren't "WHITE WHITE" from the factory, but more of an "off-white". But after 50 years, plastic has a tendency to yellow. I don't believe they were originally as yellow as what we're seeing now though. I believe they were originally more of an "egg-shell" white.

And yes Chick, I stole your picture because it was a greeat example of all three versions in a row!!

Ed

68camaroz28

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Re: Brake Booster Check Valve..
« Reply #28 on: October 22, 2016, 10:03:35 PM »
I will concede that they probably weren't "WHITE WHITE" from the factory, but more of an "off-white". But after 50 years, plastic has a tendency to yellow. I don't believe they were originally as yellow as what we're seeing now though. I believe they were originally more of an "egg-shell" white.

And yes Chick, I stole your picture because it was a greeat example of all three versions in a row!!

Ed

Ed, you did not steal the picture but rather used it for enhancement! :) I got gobs of pics from others also so no issue but I wanted to communicate that to explain why the middle one looked white. The one I showed in the aforementioned picture is in reality a NOS valve as the power booster/master cylinder assembly (again May68 dated Engineering tag) was never on a car. The color of that valve is fairly close to even ones on survivors but this is the kicker in my view, I have reviewed several original valves and of those have not noted much if any difference in color from what portion was in the power booster or the portion stuck in the hose. No reason to debate amount of cream color and I won't but wanted to help to clarify the refrigerator white valves are just correct in color but for sure my choice over what we find in repro power boosters or what is put in when restored.
By the way, I saved your enhancement for future use. LOL
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