caliper pins
Thread Starter
Racer
Joined: Mar 2002
Posts: 312
Likes: 6
From: Troy Al
caliper pins
I got ready to change the front pads and rotors on my 93.
I was surprised it only has one pin. My pins have "slop", like the pin is too long. So I ordered new pins from rock auto, but they were the same length as the old one. I could shim it with a few washers, but i really don't want to do that on my corvette. Does the e-clip go on the outside or inside? Has anyone else ran into this? I have searched the forum, but don't see any.
THANKS
I was surprised it only has one pin. My pins have "slop", like the pin is too long. So I ordered new pins from rock auto, but they were the same length as the old one. I could shim it with a few washers, but i really don't want to do that on my corvette. Does the e-clip go on the outside or inside? Has anyone else ran into this? I have searched the forum, but don't see any.
THANKS
Team Owner
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
I got ready to change the front pads and rotors on my 93.
I was surprised it only has one pin. My pins have "slop", like the pin is too long. So I ordered new pins from rock auto, but they were the same length as the old one. I could shim it with a few washers, but i really don't want to do that on my corvette. Does the e-clip go on the outside or inside? Has anyone else ran into this? I have searched the forum, but don't see any.
THANKS
I was surprised it only has one pin. My pins have "slop", like the pin is too long. So I ordered new pins from rock auto, but they were the same length as the old one. I could shim it with a few washers, but i really don't want to do that on my corvette. Does the e-clip go on the outside or inside? Has anyone else ran into this? I have searched the forum, but don't see any.
THANKS
Last edited by WVZR-1; Jul 13, 2017 at 05:50 AM.
Thread Starter
Racer
Joined: Mar 2002
Posts: 312
Likes: 6
From: Troy Al
The pin is 1/4 " longer than it needs to be. I see it is put in backwards, for some reason(eclip inboard) I hope this fixes it_ as well as some strange noises coming from the front brakes. Previous owner may have done it. The one I ordered was a Wagner from Rock Auto, it came with out the eclip
Team Owner
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
The pin is 1/4 " longer than it needs to be. I see it is put in backwards, for some reason(eclip inboard) I hope this fixes it_ as well as some strange noises coming from the front brakes. Previous owner may have done it. The one I ordered was a Wagner from Rock Auto, it came with out the eclip
Take a new pin with you!
Thread Starter
Racer
Joined: Mar 2002
Posts: 312
Likes: 6
From: Troy Al
I don't have any loose pins but I'd think that the pin is 5/16 or very close which should make the groove diameter .250. An RE-031A I believe is either exact or very close spec for the e-clip. Many buy just very generics from the usual "local" suppliers. I'd think you're interested in either a Zinc finish or maybe better.
Take a new pin with you!
Take a new pin with you!
Team Owner
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
Really? Clip falls off, pin vibrates out and the wheel spokes do what to the caliper, wheel etc. Vibrates and falls out to inside it wanders off with likely none or little damage.
Last edited by WVZR-1; Jul 13, 2017 at 12:25 PM.
Melting Slicks
Joined: May 2013
Posts: 2,692
Likes: 349
From: Sacramento California
That diagram does show the pin inserted from the inside, with clip outside. Thank you VWZR-1. I need to change mine around, someone prior to my ownership replaced them the wrong direction.
Also the clips on my pins don't look like circlips, they look like E-clips. Same thing?
Can anyone confirm that the rear calipers do not have a retainer pin? Mine's a 1995 with HD brakes.
Thank you
Also the clips on my pins don't look like circlips, they look like E-clips. Same thing?
Can anyone confirm that the rear calipers do not have a retainer pin? Mine's a 1995 with HD brakes.
Thank you
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
That diagram does show the pin inserted from the inside, with clip outside. Thank you VWZR-1. I need to change mine around, someone prior to my ownership replaced them the wrong direction.
Also the clips on my pins don't look like circlips, they look like E-clips. Same thing?
Can anyone confirm that the rear calipers do not have a retainer pin? Mine's a 1995 with HD brakes.
Thank you
Also the clips on my pins don't look like circlips, they look like E-clips. Same thing?
Can anyone confirm that the rear calipers do not have a retainer pin? Mine's a 1995 with HD brakes.
Thank you
And it does say that the clip goes to the outside. Guess I'll have to reverse the pins on my '93
The prior owner did a J55 upgrade as the car came with the base brakes.As far as the rear brakes, the calipers do not use a single pin. They use two guide pins that have small bolts to attach the guide pin to the caliper. There are rear caliper pin sets sold on Rockauto that include the guide pins, bolts, and rubber dust boots.
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Melting Slicks
Joined: May 2013
Posts: 2,692
Likes: 349
From: Sacramento California
Team Owner
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
My '93 FSM states that the pins are different depending on the caliper (base JL9 or heavy duty J55). It also says that repair kits came with two pins; one for base brakes, the other for the HD J55 brakes. But that was back in '93. Could be now that just a single pin is provided and could have some "slop" when installed.
And it does say that the clip goes to the outside. Guess I'll have to reverse the pins on my '93 The prior owner did a J55 upgrade as the car came with the base brakes.
As far as the rear brakes, the calipers do not use a single pin. They use two guide pins that have small bolts to attach the guide pin to the caliper. There are rear caliper pin sets sold on Rockauto that include the guide pins, bolts, and rubber dust boots.
And it does say that the clip goes to the outside. Guess I'll have to reverse the pins on my '93
The prior owner did a J55 upgrade as the car came with the base brakes.As far as the rear brakes, the calipers do not use a single pin. They use two guide pins that have small bolts to attach the guide pin to the caliper. There are rear caliper pin sets sold on Rockauto that include the guide pins, bolts, and rubber dust boots.
dgxr - The correct retainers are E - clips.
Le Mans Master
Joined: Aug 1999
Posts: 7,339
Likes: 137
From: WilkesBarre PA
Every car I've taken apart with the J55 brakes had the clip on the inside. My ZR-1 and GS had the original pads and low miles when I bought them. I do see what the diagrams say though?
Team Owner
Joined: Sep 2003
Posts: 25,394
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It only makes sense to use the outboard retention - you can see it! Ease of assembly and depending upon the wheels used a quick glance and you're all set.
** I poked around a little and I see some FOMOCO images of the PBR with the "pin head" out-board but I've never seen a FOMOCO FSM that showed assembly.
Last edited by WVZR-1; Jul 17, 2017 at 09:22 AM.