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Brake caliper pistons

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Old Feb 18, 2014 | 05:38 PM
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Default Brake caliper pistons

While getting my calipers powder coated I noticed that one of my pistons from the inside the caliper had some scratches and nicks on it like a pair of pliers were used to remove it. To me its not a huge deal but I was just wondering the best place to purchase a single piston for one the caliper non -z06
Thanks

Josh
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Old Feb 18, 2014 | 08:10 PM
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Just one piston is probably not available. You should buy a set anyway. Keep them all balanced for wear and heat stress.
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Old Feb 18, 2014 | 08:42 PM
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Since you failed to specify:

Front: 12530705
Rear: 12453509
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Old Feb 20, 2014 | 03:04 PM
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Originally Posted by LoneStarFRC
Since you failed to specify:

Front: 12530705
Rear: 12453509
Thank you
Am I right too assume that the Quantity of 1 at gmpartshouse is only 1 single caliper piston?
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Old Feb 20, 2014 | 07:26 PM
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Originally Posted by Leukic
Thank you
Am I right too assume that the Quantity of 1 at gmpartshouse is only 1 single caliper piston?
Yes sir.
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Old Feb 22, 2014 | 03:02 AM
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I don't think those part numbers are going to get you too far. If you hit a road block getting one. Please let me know. We sell a SS piston upgrade and when I swap them out for people 99 percent of the time they don't want the old ones back. So I keep a few around for times like this.

PM me if you need one!

Randy
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Old Feb 22, 2014 | 03:53 PM
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Originally Posted by Randy@DRM
I don't think those part numbers are going to get you too far. If you hit a road block getting one. Please let me know. We sell a SS piston upgrade and when I swap them out for people 99 percent of the time they don't want the old ones back. So I keep a few around for times like this.

PM me if you need one!

Randy
Has there been a problem getting OEM replacement pistons for the average daily driver? I have not had the need for one myself, so I don't know if there is or is not.
I recall seeing your SS replacement pistons several years ago and I'd bet they are indeed popular with the high performance segment, road racers in particular. I know that if I was doing competitive events that are hard on brakes, I definitely would be calling you guys up for a set.
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Old Feb 23, 2014 | 10:19 PM
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Originally Posted by LoneStarFRC
Has there been a problem getting OEM replacement pistons for the average daily driver? I have not had the need for one myself, so I don't know if there is or is not.
I recall seeing your SS replacement pistons several years ago and I'd bet they are indeed popular with the high performance segment, road racers in particular. I know that if I was doing competitive events that are hard on brakes, I definitely would be calling you guys up for a set.
They come and go out of stock with GM. I hope they are in the system now. About 3 months ago they were flat out of them. A guy needed a couple due to salt corrosion, and he search me out. Of course I played it forward and sent them to him a couple stock ones.

Our SS pistons are way overkill for the average street car. Some street cars in the hills on kill mode can use the benefits of a Stainless caliper piston. I have a feeling we will be selling more to street guys just because they have coating calipers and don't want to buy a new calipers just for a damaged piston or two. Thinking back at how many OEM ones I have thrown in the trash is just crazy

Randy


Randy
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Old Feb 24, 2014 | 01:14 PM
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Two months ago West Coast Corvettes had a sale on new GM red powder coated calipers for around $400. So that's what I did. I figured just start with new everything and be done with it. And I change out brake fluid about every year or two to keep system in good shape. Good luck with your project. SS pistons? Hmmm interesting. But the bores can still corrode.
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Old Mar 1, 2014 | 12:42 AM
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We use the Stainless Pistons only for heat

8 minutes it's a pretty boring video. I wanted to see if for myself, so I grabbed a video camera and filmed it.

Last edited by Randy@DRM; Mar 1, 2014 at 12:46 AM.
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Old Mar 1, 2014 | 01:14 AM
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Originally Posted by Old Horsepower
Two months ago West Coast Corvettes had a sale on new GM red powder coated calipers for around $400. So that's what I did. I figured just start with new everything and be done with it. And I change out brake fluid about every year or two to keep system in good shape. Good luck with your project. SS pistons? Hmmm interesting. But the bores can still corrode.
How so? Aren't the C5 calipers aluminum? Keeping the fluid flushed every year and using good quality fluid helps prevent, it not eliminate that.

Now, the C3 cast iron calipers on the other hand, were notorious for corrosion problems.
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Old Mar 1, 2014 | 01:16 AM
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Originally Posted by Randy@DRM
We use the Stainless Pistons only for heat

8 minutes it's a pretty boring video. I wanted to see if for myself, so I grabbed a video camera and filmed it.
c5pistons.wmv - YouTube
I've seen that video a couple times in the past, I just didn't know it was you personally that made it. It very effectively points out the difference in heat transfer.
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Old Mar 1, 2014 | 02:14 AM
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Story leading up to this.

Picked a ton of blueberries, raspberries and strawberries. Made a ton of jam, woke up at 6am to start. I was down to two more batches and figured why not do a double batch and be done with it. Well it was more then expected and it became a mess in a huge hurry. My wife came back from work late that night to find a bunch of done finished jars of jam. Then she found the mess it made in that tray under the coils. She said "that is now your burner you can do whatever you want on it" Next day, this video. A few days later I played around with dying some plastic parts in boiling water. Had to slow down the pace because I was close to never being allowed in the kitchen again.

Kitchens make great make shift labs. My single days I had engine parts in there all the time

Randy
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Old Mar 1, 2014 | 02:29 AM
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Originally Posted by Randy@DRM
Story leading up to this.

Picked a ton of blueberries, raspberries and strawberries. Made a ton of jam, woke up at 6am to start. I was down to two more batches and figured why not do a double batch and be done with it. Well it was more then expected and it became a mess in a huge hurry. My wife came back from work late that night to find a bunch of done finished jars of jam. Then she found the mess it made in that tray under the coils. She said "that is now your burner you can do whatever you want on it" Next day, this video. A few days later I played around with dying some plastic parts in boiling water. Had to slow down the pace because I was close to never being allowed in the kitchen again.

Kitchens make great make shift labs. My single days I had engine parts in there all the time

Randy
You wouldn't be the first guy to get in the dog house for getting "creative" with wifey's kitchen appliances. Just don't go using the oven for some late-night powder coating.
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Old Mar 2, 2014 | 02:39 AM
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Originally Posted by LoneStarFRC
How so? Aren't the C5 calipers aluminum? Keeping the fluid flushed every year and using good quality fluid helps prevent, it not eliminate that.

Now, the C3 cast iron calipers on the other hand, were notorious for corrosion problems.
Thanks for the education. I bought my 99 3 years ago. The brake fluid was really bad. Worst I have seen. So it took me awhile but now everything is new. I replaced the master cylinder also. I just thought I would start fresh. New parts and fluid.
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Old Mar 2, 2014 | 03:14 AM
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Originally Posted by Old Horsepower
Thanks for the education. I bought my 99 3 years ago. The brake fluid was really bad. Worst I have seen. So it took me awhile but now everything is new. I replaced the master cylinder also. I just thought I would start fresh. New parts and fluid.
I agree, sounds like the right thing to do. Clean and fresh is always a good thing.
Flush/bleed yearly and hydraulics-wise your good to go for a very long time.
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