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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Sep 2018 Posts: 25 'Bolter | | 'Bolter Joined: Sep 2018 Posts: 25 | The gasket that was on the nut for the opening ripped off last night when I opened it to check the levels (empty!). It was the first time the master had been opened in a decade so it basically ripped apart. I am having issues finding a replacement gasket as everything seems to be susceptible to Dot 3 fluid. Is it required or can it be metal on metal? I'm thinking something should be there to prevent extra air getting into the system. If its required what have you used if you were not able to source the actual part from anywhere?
1958 Chev Apache 3600
| | | | | Joined: Apr 2005 Posts: 7,441 Bolter | | Bolter Joined: Apr 2005 Posts: 7,441 | I think you can still buy gasket material at the parts stores. Careful work with a razor blade and your good to go.ðŸ›
Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
| | | | | Joined: Feb 2004 Posts: 29,836 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,836 | I've made very effective master cylinder gaskets from soft aluminum sheet metal or copper. All it takes is some careful drilling and filing for the inside diameter, and a good set of tin snips for the OD. They last WAY longer than paper gaskets and also seal better. Most master cylinder plugs have a small vent hole drilled into them from the side.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: May 2005 Posts: 8,983 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,983 | The fill hole plug gasket is for splash out. Air getting in can't get thru the fluid. Otherwise every time you checked it, air would get in system. It probably does not even need a gasket.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
| | | | | Joined: Sep 2018 Posts: 25 'Bolter | | 'Bolter Joined: Sep 2018 Posts: 25 | Thanks guys, I'll keep an eye on it and look into the gasket material or copper. Its a reason to get a new tool as I don't have snips!
1958 Chev Apache 3600
| | | | | Joined: May 2005 Posts: 8,983 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,983 | Do you want me to delete my post showing an original replacement gasket for $2?
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
| | | | | Joined: Sep 2018 Posts: 25 'Bolter | | 'Bolter Joined: Sep 2018 Posts: 25 | Whoops, didn't see the link, thanks! I'll see if I can find that in Canada or else a $2 part will be $4 + $20 shipping :-)
1958 Chev Apache 3600
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