Author Topic: Rear Axle Brake Line Clip PN# 3956700  (Read 1958 times)

Edgemontvillage

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Re: Rear Axle Brake Line Clip PN# 3956700
« Reply #30 on: June 14, 2018, 04:58:55 AM »
Lloyd -

I checked the '69 AIM for the rear axle, page 65.  It appears there was a production change to the clip - see note "17".    Unfortunately, the copy quality of the AIM is poor and I can't make out the date when the change happened.   I also checked the '68 AIM, but I couldn't quite make out the clip used but something definitely changed between '68 and '69 as the engineering drawings changed.

So it's very likely the clip on your rear axle is the original production clip which appears to be the same as the other translucent blue brake line clips.

Hans

Hans, Iím reasonably confident based on the evidence that my diff and the rear brake lines had never been apart or serviced and therefore assembly-line original. The blue dyed brake line clip used appears to be one of 4 variants posted here.  Is it possible the diff-specific clip (per yours) and standard in-line brake clips were interchangeably used? Would sure like to see more original examples.
Lloyd
1969 RS Z/28 (Brooklyn Project)

69Z28-RS

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Re: Rear Axle Brake Line Clip PN# 3956700
« Reply #31 on: June 14, 2018, 01:01:50 PM »
You fellas are getting my interest up.. :)   I'll check mine and post a photo...

Gary
Gary W / 09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe, '70 Mach I 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

Edgemontvillage

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Re: Rear Axle Brake Line Clip PN# 3956700
« Reply #32 on: June 14, 2018, 01:51:08 PM »
You fellas are getting my interest up.. :)   I'll check mine and post a photo...

Gary

That's the spirit Gary!
Lloyd
1969 RS Z/28 (Brooklyn Project)

x66 714

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Re: Rear Axle Brake Line Clip PN# 3956700
« Reply #33 on: June 14, 2018, 02:10:31 PM »
I'll be in the Phx area on Saturday looking at Camaro parts. I'll see what he has laying around. The bracket most likely would be on a 10 bolt also. I tried to read that page information that was posted from the AIMs manual. It looks as though the bracket changed sometime in 1969...Joe
See America's First, Chevrolet

1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO. Purchased March 1976
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E. Purchased April 1981

69Z28-RS

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Re: Rear Axle Brake Line Clip PN# 3956700
« Reply #34 on: June 15, 2018, 02:56:31 AM »
I remembered and got under my car tonight, jacked it up, put the rear on stands, and lowered the rear ... got under it with my camera, but couldn't get a great view of the clip... so I dug thru my 'cleanup' photos and found 2 or 3 with a view of the clip...
Gary W / 09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe, '70 Mach I 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

Hans L

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Re: Rear Axle Brake Line Clip PN# 3956700
« Reply #35 on: June 15, 2018, 04:03:57 AM »
Hans, Iím reasonably confident based on the evidence that my diff and the rear brake lines had never been apart or serviced and therefore assembly-line original. The blue dyed brake line clip used appears to be one of 4 variants posted here.  Is it possible the diff-specific clip (per yours) and standard in-line brake clips were interchangeably used? Would sure like to see more original examples.


Agree.  I see no reason to believe its not original, especially since the other brake line clips are original.   My best guess, based on #17 on the rear axle cutaway View C for the HD Axle drawing on page  65 of the AIM, is that for whatever reason there was a mid-year production change.  Unfortunately, in the notes block below where the #17 is referenced in the revision block, the actual date of the change is not legible.

Have you figured out yet a way to replicate the translucent blue dye on the brake line clips??
http://www.littooy.com/hans/
'69 Camaro RS Z/28 Van Nuys Built
'69 Chevelle SS 396 4 Speed

Edgemontvillage

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Re: Rear Axle Brake Line Clip PN# 3956700
« Reply #36 on: June 15, 2018, 04:13:36 AM »
Hans, Iím reasonably confident based on the evidence that my diff and the rear brake lines had never been apart or serviced and therefore assembly-line original. The blue dyed brake line clip used appears to be one of 4 variants posted here.  Is it possible the diff-specific clip (per yours) and standard in-line brake clips were interchangeably used? Would sure like to see more original examples.


Agree.  I see no reason to believe its not original, especially since the other brake line clips are original.   My best guess, based on #17 on the rear axle cutaway View C for the HD Axle drawing on page  65 of the AIM, is that for whatever reason there was a mid-year production change.  Unfortunately, in the notes block below where the #17 is referenced in the revision block, the actual date of the change is not legible.

Have you figured out yet a way to replicate the translucent blue dye on the brake line clips??

Hans, I havenít tackled the blue dye challenge as yet. Chick did some good trailblazing on this during his 68Z restoration project however I may try some additional techniques. Do you have some ideas?
Lloyd
1969 RS Z/28 (Brooklyn Project)

Hans L

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Re: Rear Axle Brake Line Clip PN# 3956700
« Reply #37 on: June 15, 2018, 03:52:42 PM »
Lloyd - Well, I tried a bunch of different angles, including the Dykem dyes (too dark, didn't stain well).  I called various platters, no luck.  I tried reproductions (color way off and the clips aren't even close).   Finally, I went into a Hobby/Craft store and they had Testors 1257 Translucent Blue.  Intended to paint model airplane cockpit glass...so I said, what the heck and gave it a try.    I just dusted the clips with the spray paint and found it to be visually pretty close.   So that's what I ended up doing.  Not factory correct, but optically, I'm reasonably pleased - though ideally I would have preferred a true translucent metal dye.   Let us know if you find a better option!
 



Here's a comparison:


All the clips, based my observations of the color after cleaning - some clear zinc, some yellow zinc, some black zinc, and finally translucent blue



Installed




http://www.littooy.com/hans/
'69 Camaro RS Z/28 Van Nuys Built
'69 Chevelle SS 396 4 Speed

69Z28-RS

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Re: Rear Axle Brake Line Clip PN# 3956700
« Reply #38 on: June 15, 2018, 05:05:34 PM »
If you want your 'blue' to be more translucent, you might try thinning it down before dipping the clip in it...?

My original rear end clip showed no signs of 'blue' on my late 09C Z28 . 

Note:  The brake line clips intended for plugging into holes in the frame (to position and hold the clips/line in place) would not seem to be appropriate for the differential since no such holes exist!
Gary W / 09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe, '70 Mach I 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

Edgemontvillage

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Re: Rear Axle Brake Line Clip PN# 3956700
« Reply #39 on: June 16, 2018, 09:34:32 PM »
This brake line clip is from my shop partner's (PaulOlds) 1968 Z/28 (Norwood, April build). The car was raced extensively by its previous owner so I was surprised to see the clip was still there and hadn't been tossed. The diff was painted at some point along with the clip.



 

Lloyd
1969 RS Z/28 (Brooklyn Project)

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Re: Rear Axle Brake Line Clip PN# 3956700
« Reply #40 on: June 22, 2018, 06:29:20 AM »
Just checked my car, and it's 0319-dated 12 bolt has exactly the same clip as the one Hans pictured, it also appears to have the same stamping (although can't be sure without removing it, was lying on my back with a flashlight....).
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.

Edgemontvillage

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Re: Rear Axle Brake Line Clip PN# 3956700
« Reply #41 on: June 22, 2018, 07:01:56 PM »
Just checked my car, and it's 0319-dated 12 bolt has exactly the same clip as the one Hans pictured, it also appears to have the same stamping (although can't be sure without removing it, was lying on my back with a flashlight....).

"was lying on my back with a flashlight...."   Thanks Tim - the things we do for the hobby!
Lloyd
1969 RS Z/28 (Brooklyn Project)

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Re: Rear Axle Brake Line Clip PN# 3956700
« Reply #42 on: June 23, 2018, 03:03:10 AM »
..... and on a cold frosty morning, I elected to not linger on the concrete floor!
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.

Edgemontvillage

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Re: Rear Axle Brake Line Clip PN# 3956700
« Reply #43 on: June 26, 2018, 02:14:42 PM »
I posted a Parts Wanted ad on SYC for a clip in mint condition which I haven't located yet however for reference I'm adding the following photos that were posted:




Lloyd
1969 RS Z/28 (Brooklyn Project)

Hans L

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Re: Rear Axle Brake Line Clip PN# 3956700
« Reply #44 on: June 26, 2018, 05:27:25 PM »
I posted a Parts Wanted ad on SYC for a clip in mint condition which I haven't located yet however for reference I'm adding the following photos that were posted:

Interesting - have you decided not to use the clip found on the rear axle on your car and instead go with the a "technically correct" clip?   Curious to why if that's the case as I was reasonably convinced your clip on the rear axle was original. 
http://www.littooy.com/hans/
'69 Camaro RS Z/28 Van Nuys Built
'69 Chevelle SS 396 4 Speed