O-ring caliper piston seals
Thread Starter
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
O-ring caliper piston seals
Do you really have to have stainless steel bore liners to use the o-ring seal pistons? I bought rebuilt calipers from napa before I new any better, and I would like to install o-ring seal pistons in them. It will most likely be temporary, for a year or two, till I can upgrade to the Willwood aluminum calipers. Thanks,
Scott
Scott
Thread Starter
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
They dont look like stainless steel. Shouldn't the bores be shiney-shiney?
If not, then I just won't worry about it, and we'll see what happens.
Scott
If not, then I just won't worry about it, and we'll see what happens.
Scott
Heel & Toe
Joined: Jun 2011
Posts: 21
Likes: 1
From: Clinton TN
If you use dot 5 brake fluid throughout the system the iron calipers will last a long time since dot 5 does not take up moisture and I can't see why the o-rings would not work better than the lip seals.
Drifting
Joined: Sep 1999
Posts: 1,970
Likes: 91
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[/QUOTE]
bought my o-ring setup from the original designer (ZTI) before he sold to a brake outfit. He told me no need to SS sleeve my bores if they could be honed . Had to be in the early 90's and I still have no issued . (Dot 5 fluid)
QUOTE=scottyp99;1577922681]Do you really have to have stainless steel bore liners to use the o-ring seal pistons? I bought rebuilt calipers from napa before I new any better, and I would like to install o-ring seal pistons in them. It will most likely be temporary, for a year or two, till I can upgrade to the Willwood aluminum calipers. Thanks,
Scott
Scott
bought my o-ring setup from the original designer (ZTI) before he sold to a brake outfit. He told me no need to SS sleeve my bores if they could be honed . Had to be in the early 90's and I still have no issued . (Dot 5 fluid)
Thread Starter
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
OK, turns out there is a liner in the bores, I didn't see it because I was expecting something thicker. One of the liners had just barely crept out of the bore, loosening the dust cover, I tapped it back in, I hope it stays put. The O-ring seals made the job much easier than fussing around with the lip seals. The pistons have a much closer clearance than the old lip seal pistons, too. I am hoping for good results. Installed them today before work, will be bleeding them tomorrow, I'll let ya know how it goes.
Scott
Scott
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
OK, turns out there is a liner in the bores, I didn't see it because I was expecting something thicker. One of the liners had just barely crept out of the bore, loosening the dust cover, I tapped it back in, I hope it stays put. The O-ring seals made the job much easier than fussing around with the lip seals. The pistons have a much closer clearance than the old lip seal pistons, too. I am hoping for good results. Installed them today before work, will be bleeding them tomorrow, I'll let ya know how it goes.
Scott
Scott
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Race Director
Joined: Nov 2002
Posts: 12,142
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From: Taylor Michigan
O ring seal calipers are actually for floating calipers like the 84 Vettes and later......Lip seal calipers are those used from 65 through 83 Vettes that are not a floating style and instead rigid mounted......but whatever works for you....neither style are immune from rust forming with regular fluids damaging the seals especially the cars are not used on a regular basis.....high humidity areas could probably contribute to moisture too
Thread Starter
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
Scott
Melting Slicks
Joined: Mar 2008
Posts: 2,666
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From: Spring Park MN
O ring seal calipers are actually for floating calipers like the 84 Vettes and later......Lip seal calipers are those used from 65 through 83 Vettes that are not a floating style and instead rigid mounted......but whatever works for you....neither style are immune from rust forming with regular fluids damaging the seals especially the cars are not used on a regular basis.....high humidity areas could probably contribute to moisture too
Every opposed piston solid mount caliper on the market uses either o-rings or square o-rings and have for decades. Only the Corvette calipers use the lip seals.
