Master Cylinder Mounting Gasket?
Thread Starter
Heel & Toe
Joined: Sep 2009
Posts: 21
Likes: 0
Master Cylinder Mounting Gasket?
I have 70 car that has "mushy" brakes. I am going to bleed the brakes, rebuild the master cylinder with the rebuild kit, and reinstall the MC.
There is some leaking on the firewall from the MC, which is the reason I will be rebuilding it with this kit:
http://www.amazon.com/Raybestos-MK47.../dp/B000CP8P14
My question is do I need a new Mounting Gasket? Unfortunately, all the local stores don't carry the $3 part, and my only alternative would be to pay Ecklers $12 for it and have to wait for it to come.
http://www.ecklers.com/product.asp?p...3&dept_id=1074
Final question, besides the casting number on the passenger side and the 2 letter code indicating non power brakes, is there a date code on the MC?
Thanks
There is some leaking on the firewall from the MC, which is the reason I will be rebuilding it with this kit:
http://www.amazon.com/Raybestos-MK47.../dp/B000CP8P14
My question is do I need a new Mounting Gasket? Unfortunately, all the local stores don't carry the $3 part, and my only alternative would be to pay Ecklers $12 for it and have to wait for it to come.
http://www.ecklers.com/product.asp?p...3&dept_id=1074
Final question, besides the casting number on the passenger side and the 2 letter code indicating non power brakes, is there a date code on the MC?
Thanks
Melting Slicks
Joined: May 2003
Posts: 2,078
Likes: 283
From: Dyersburg TN
really DIY
it does not seal against fluid, you have a leak from a inner seal which will go away when you rebuild / replace MC. You can buy gasket material at Autozone and other stores and make you own if you don't want to wait. I understand about the shipping, I just paid Ecklers $12.00 to ship two $3.99 hood spring bumpers (no one else has them local).
Team Owner
Joined: Sep 2006
Posts: 31,285
Likes: 4,375
From: Westminster Maryland
Hi S,
There was a TINY Julian date stamped in the machined area for the front brake line fitting. 0338 on my mid- January built 71.
The area looks black in this picture, but is unpainted since it was machined after the m/c was painted.
Regards,
Alan
There was a TINY Julian date stamped in the machined area for the front brake line fitting. 0338 on my mid- January built 71.
The area looks black in this picture, but is unpainted since it was machined after the m/c was painted.
Regards,
Alan
Thread Starter
Heel & Toe
Joined: Sep 2009
Posts: 21
Likes: 0
Thanks to everyone. I guess my plan will be to reuse the existing gasket if possible, if not I will see if I can get a thermostat gasket locally.
Finally, how do you decipher a four digit Julian date?
Thanks again.
Finally, how do you decipher a four digit Julian date?
Thanks again.
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
julian date ...first date is last year digit and next three are calendar day
010194......4001
123194......4365
or 1964,1974,1984....etc
010194......4001
123194......4365
or 1964,1974,1984....etc
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
Buy the new gasket material at local parts store and use the old gasket as a template to make a new one. A pencil, X-acto knife, and scissors are all you need. Use no sealant on the new one. Save the excess material for the next gasket you can't buy locally. 
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Advanced
Joined: Feb 2009
Posts: 65
Likes: 0
From: Egg Harbor Township NJ
Buy the new gasket material at local parts store and use the old gasket as a template to make a new one. A pencil, X-acto knife, and scissors are all you need. Use no sealant on the new one. Save the excess material for the next gasket you can't buy locally.
