Rear Caliper Air Pumping Problem Fixed...
Thread Starter
Team Owner
Joined: Aug 2000
Posts: 21,457
Likes: 463
From: Massillon,Ohio USA
2020 C3 of the Year Finalist - Unmodified
Cruise-In VI Veteran
St. Jude Donor '08-'09-'10-'11-'12
Rear Caliper Air Pumping Problem Fixed...
Last year developed an "air pumping" problem on my Yellow '80 anytime I'd drive it like more than 200mi without using the brakes. Took rotors to a very good machine shop, which helped the problem, but did'nt cure it all the way. So, after reading recommendations on these "O" ring calipers, I decided to get two rear ones for my '80 from Vette Brake Products... Whoa, what a difference-drove the '80 360mi today and that brake pedal has never been firmer and near(or at) the top when braking!!! I did'nt know C3 brakes could be this great :thumbs:
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
Re: Rear Caliper Air Pumping Problem Fixed... (Paul Borowski)
:iagree:
Same for me.
Had the same problem and also got the discs turned down. Both where OK and not warped.
The O-ring conversion did the trick. No more pumping.
I'm glad I did it this way before going for a bearing replacement as those aren't bad enough to be replaced. ( expensive as well )
Gunther :seeya
[Modified by WESCH, 12:46 PM 3/25/2003]
[Modified by WESCH, 12:48 PM 3/25/2003]
Same for me.
Had the same problem and also got the discs turned down. Both where OK and not warped.
The O-ring conversion did the trick. No more pumping.
I'm glad I did it this way before going for a bearing replacement as those aren't bad enough to be replaced. ( expensive as well )
Gunther :seeya
[Modified by WESCH, 12:46 PM 3/25/2003]
[Modified by WESCH, 12:48 PM 3/25/2003]
Le Mans Master
Joined: Apr 2001
Posts: 5,000
Likes: 1
From: Minneapolis, Mn USA
Re: Rear Caliper Air Pumping Problem Fixed... (WESCH)
The O-ring seal pistons are sooo much tighter in the bores that I can see why they go a long way to remove this problem.
The OEM seal pistons were very loose in the bores.
Brent.......
The OEM seal pistons were very loose in the bores.
Brent.......
Drifting
Joined: Jul 2000
Posts: 1,266
Likes: 0
From: Allen, TX, USA
Re: Rear Caliper Air Pumping Problem Fixed... (Paul Borowski)
> more than 200 mi...
More!! Wow where are you driving these days.
A long drive for me is 45 miles, but then I drive short distances
every day...
Good news on the calipers though - will remember that!
Thread Starter
Team Owner
Joined: Aug 2000
Posts: 21,457
Likes: 463
From: Massillon,Ohio USA
2020 C3 of the Year Finalist - Unmodified
Cruise-In VI Veteran
St. Jude Donor '08-'09-'10-'11-'12
Re: Rear Caliper Air Pumping Problem Fixed... (WESCH)
:iagree: I'm glad I did it this way before going for a bearing replacement as those aren't bad enough to be replaced. ( expensive as well)
Le Mans Master
Joined: Jul 2001
Posts: 9,622
Likes: 16
From: absecon nj
Re: Rear Caliper Air Pumping Problem Fixed... (NHvette)
i guess that will be one of my next projects also when i finally get it on the road again.ive replaced rotors,bearings and calipers,still get air after a weekend cruise.looks like o ring calipers are next.thanks paul.
