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Author Topic: 5460346 Master Cylinder  (Read 5061 times)
Pex68
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« on: March 28, 2008, 01:01:08 PM »

Is there a date code on the 5460346 master cylinder?  All I can find is the D4 stamp.  If so where is it located?
I've seen the CRG report - Chassis - Suspension, Axle, Brakes, & Wheels but it didn't mention anything about date codes.
Thanks in advance!
« Last Edit: March 28, 2008, 01:10:49 PM by Pex68 » Logged

Chris P
1968 Sequoia Green SS 396/325 M20
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« Reply #1 on: March 28, 2008, 03:58:04 PM »

http://www.camaros.org/forum/index.php?topic=3428.0

See the above link.  One of the posted pics shows the location of the Julian date code on a 5460465 (power drum) master cylinder.  The number in the picture is seen via an inspection mirror.

"On the LH (driver) side on the bottom are two additional numbers.  On the bottom to the front is the Julian date code - "170" (June 19).  On the bottom to the rear is the foundry pattern number "D14"."
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Richard Thomas
1969 RS
Pex68
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« Reply #2 on: March 28, 2008, 04:11:47 PM »

I saw that post when I searched master cylinder and just double checked again-no other stampings I can find.  This is a 5460346 WT master for disc brakes.  The D4 stamp is where the date would be on a 309.  Am I missing something or do these not have date codes?Huh
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Chris P
1968 Sequoia Green SS 396/325 M20
Ed Bertrand
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« Reply #3 on: March 28, 2008, 05:15:27 PM »

No date code on my 346. Just "D1" and some kind of star thingy inside a circle!


Ed
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Pex68
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« Reply #4 on: March 29, 2008, 04:30:31 PM »

Great thanks Ed!  Thought I was missing something or had one of those Chinese knock offs!!!!  Car is going to concourse this year and the pre-qual form asks for a date code.
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Chris P
1968 Sequoia Green SS 396/325 M20
Pex68
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« Reply #5 on: September 23, 2009, 11:58:53 AM »

Ok, some more questions!
Was told the WT on my 346 was a re-stamp!?!?!  Anyone have any pic's of a original WT stamp so I can compare?  I can post a pic mine too for scrutiny if needed but just wanted to compare for myself.  Also, read Corvette 346's had a date code stamped in the front machined surface where the brake line would attach-is this true for Camaros also?  Nothing mentioned about it in the Brake report and they didn't say anything during judging but thought I'd ask again incase we were all just missing it. Embarrassed  Last thing, what was the broadcast code for 68 power disc and where was it located & how was it affixed to the assembly?
Thanks Guys.
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Chris P
1968 Sequoia Green SS 396/325 M20
Ed Bertrand
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« Reply #6 on: September 23, 2009, 01:00:06 PM »

Although not the greatest example (a little pitted), here's a picture of mine. Let's see yours.

I've also read that the Corvette units had the date code stamped in a Julian format, but I can't verify that through first hand experience.

The Broadcast Code for the 68 Camaro with Power Disk brakes is CH and it's on a tag attached to one of the Bail Wires.

Ed

« Last Edit: September 23, 2009, 01:57:47 PM by bertfam » Logged
Pex68
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« Reply #7 on: September 23, 2009, 01:44:52 PM »

Thanks Ed.  Although yours is not the greatest example, the font & size seems to be like mine.  Here's mine.  I did poilsh the pad a little but tried not so much as to remove the broach marks.  What's your take on it? 



As far as the Broadcast code, in reading this in the report:
The application code for the master cylinder was stamped on a small pad on the front of the casting, as shown in the sketch below. Note the tag with the broadcast code also shown in the sketch. The broadcast code and the master cylinder application code are not the same; the broadcast code is for the entire assembly and the application code is for the bare master cylinder.
I assumed the entire assembly would have had a different code attached to a bail wire?

So Camaros didn't get a date?  I know John can answer about the Vettes...


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Chris P
1968 Sequoia Green SS 396/325 M20
Ed Bertrand
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« Reply #8 on: September 23, 2009, 01:56:00 PM »

Yeah, you're right. I read your question wrong. The Broadcast Code for 68 Power Disk brakes is "CH".

Yours looks similar, but notice how close together my letters are compared to yours. Also note that the top of my T isn't as wide as yours and the outer "legs" of my W go higher than the middle part. Yours is equal all around. I'm no good at spotting restamps, so I'll let Kurt chime in!

Ed
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Pex68
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« Reply #9 on: September 23, 2009, 02:14:05 PM »

WOW, didn't notice that until you pointed it out...not to surprised if it though as it was bought through a certain vendor many years ago.  Pretty sure I tossed my original years ago too....before I knew better.  Ahh well...live & learn!!  At least I know what to look for now...
Thanks again Ed.
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Chris P
1968 Sequoia Green SS 396/325 M20
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« Reply #10 on: September 24, 2009, 10:10:45 PM »

I'd say it's a restamp. But if you couldn't tell, then it's probably good enough to use.... Smiley
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Kurt S
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Pex68
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« Reply #11 on: September 25, 2009, 01:02:03 PM »

Thanks Kurt.  It's one of those things I just really paid no attention to, especially since it was bought under the assumption it an original WT master...and being so I never really looked for others or had anything to compare it to.  And funny thing is it went through first year of concours without a word!  I'm having problems with it now anyway so I'll just keep my eyes peeled for a REAL original one.
As always, THANKS Guys!
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Chris P
1968 Sequoia Green SS 396/325 M20
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