Master cylinder cover

[z28z11]

My X77 01C Z's cap looks like ko-lek-tor's, no DOT, no J spec. Could not get resolution tonight, will try for pic tomorrow (cap is unrestored, pretty crusty).

Regards -

[Marty]

My 68 cap also looks like the one ko-lek-tor posted. I bought the master cylinder with a July 68 booster. Martin

[cam69aro]

my 03E `69 is the same as Gary`s too, only it got chromed in the 70`s 

[Mike S]

As a suggestion, if the cover you have is pitted, instead of getting one with surface pits redone, you can buy an exact repro (shape and stampings) for around $25 from many Corvette parts places. Outside from correct fonts there are no date codes to worry about.
There are two type of repros I have seen where it comes to the 4 vent holes on the sides of the cover under the bail wire. Some have the vent punches facing out and others have it facing inside. I have only seen inside facing vents (like those shown by ko-lek-tor) and those on my 67's.
  The place that has correct looking caps with the inside facing vents: http://www.westcoastcorvette.com/

Mike

[cam69aro]

here a pic of mine, chrome and all. any easy or good way to remove the chrome ? i read brake fluid will take it off ?

[69Z28-RS]

Plating shops can strip it off for you, and possibly they can replate it as you like..  I don't think brake fluid will remove chrome..  (but I was wrong once before.. at least.. )

[cam69aro]

for now i plan on leaving the chrome, it preserved it well over the last 35-40 years

[69 Zee]

Not sure if GM used different covers, but I know for sure that Ko-lek-tors is original.  It has the exact same lettering as my 03B Z garage/barn find was found with (pic below).  It's an original untouched cover like many other of my parts.

[69Z28-RS]

A little background information from the SAE standards committee on the J1703 brake fluid std, thru the period 1967-1970...

From the SAE website:       History of the SAE J1703 standard...

J1703C_197107         1971-07-01 Historical Revised
J1703B_197007         1970-07-01 Historical Revised
J1703A_196804         1968-04-01 Historical Revised
J1703_196709           1967-09-01 Historical Revised

-------------------------------------------------------------------------------
Motor Vehicle Brake Fluid           Standard       1967-09-01

This SAE Standard covers motor vehicle brake fluids of the nonpetroleum type for use in the braking system of any motor vehicle such as a passenger car, truck, bus, or trailer. These fluids are not intended for use under arctic conditions. These fluids are designed for use in braking systems fitted with rubber cups and seals made from styrene-butadiene rubber (SBR), or a terpolymer of ethylene, propylene, and a diene (EPDM).

[ss jim]

Mine looks like Gary and Eldon's. Especially Eldon's because I had mine chrome plated in 1980. I bought the car in April 1971. Car is 1969  01C, X55. Jim

[zdld17]

Guys, are we talking about two styles of caps or one.    Tall/narrow or short /fat ?  I thought there were two styles.

[enio45]

also - later 69 caps have the vent holes on the side......

[68camaroz28]

To help establish info here is a lid off a 5/31/68 dated Engineering Unit that was never installed. Parts List that came with unit lists cover as #5455517

[z28z11]

Chick,

Wow - what a piece. Time capsule -

Regards,
Steve

[68camaroz28]

Just posted this on the thread on the late 1969 09D Z/28 survivor and thought would post here as well for future searches.