caliper bleeding valves
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Joined: Dec 2018
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caliper bleeding valves
So I bled my brake yesterday and noticed three bleeding valves were corroded with rust. anyone have any good suggestions on an upgrade and where to buy... possibly stainless and corrosion free?
Instructor
Joined: Nov 2018
Posts: 133
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From: Detroit Area
Well looking around they seem to make them. But I am getting/seeing different sizes for the corvette. Either a M8 or M10 ? They also make a special speed bleeder with a ball check built into the bleeder. Now one of these says SS ball and SS spring in a brass housing. But the housing looked zinc plated to me. Maybe just a stock photo. Now these would need covers to keep out any dirt that might affect the ball check valve. They include them. But easy to loose and they sell them separately. You want to get the right size when do this. Maybe some one else will chime in and give the correct size. Looking forward to answers.
Drifting
Joined: Sep 2019
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From: Colo Spgs, CO
I don't know the specs for stock C7 bleeders but, FWIW, I installed Speed Bleeders on my daily driver and find them very helpful. They work exactly as advertised.
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Gary68, If you can confirm that the ones corroded are a M8X1.25 8mm hex. Then these stainless steel should work bag of 2 for about $8.00.
https://www.amazon.com/4LIFETIMELINE...ve%2C77&sr=1-6
https://www.amazon.com/4LIFETIMELINE...ve%2C77&sr=1-6
Last edited by garyw68; Jun 9, 2022 at 08:32 AM.
Thread Starter
Advanced
Joined: Dec 2018
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I don't know the specs for stock C7 bleeders but, FWIW, I installed Speed Bleeders on my daily driver and find them very helpful. They work exactly as advertised.
Drifting
Joined: Sep 2019
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From: Colo Spgs, CO
After doing many searches... the GM part# is 25900782. But since two of the eight were corroded wit rust... im hesitant to use the OEMs. The thread size is m10 x 1.25 and as far as I can tell... the front valves are the same size as the rear. So I've been searching for m10 x 1.25 in SS... ideally with the "speed bleeder" technology... and not having too much luck... sigh
Instructor
Joined: Nov 2018
Posts: 133
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From: Detroit Area
Well on the speed bleeders ones I found, only the check ball is Stainless Steel. The Russell and the Edelbrock 639520 only have the ball in stainless Steel. The other take away is do NOT over tighten the screws. Some even say give them a shot of WD40 before you put the plastic cap back on after you are done bleeding them. Let us know what you find and if the size you talked about is correct
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Drifting
Joined: Sep 2019
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From: Colo Spgs, CO
Well on the speed bleeders ones I found, only the check ball is Stainless Steel. The Russell and the Edelbrock 639520 only have the ball in stainless Steel. The other take away is do NOT over tighten the screws. Some even say give them a shot of WD40 before you put the plastic cap back on after you are done bleeding them. Let us know what you find and if the size you talked about is correct
Agree with your advice to not over-tighten and a litttle WD-40 seems like a decent idea too.
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I spent some time researching this. The Speed Bleeder site leaves a bit to be desired, with no application listed for 2019 Corvettes. There are, however, listings for earlier C7 MYs (2014-2018). According to their cross-reference, earlier MYs used part numbers "9497K", "14213", and/or "H9497-2" bleeder valves, all of which correspond to SB1010S-SS Stainless Steel Speed Bleeders. I sent an inquiry to Speed Bleeders via email, and will post any response I receive...
Pro
Joined: Oct 2021
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From: Central TX
These should work. I was researching powder coating my brake calipers and TPS Motorsports offers these. And they are on sale.
https://www.tpsmotorsports.com/test2...-set-of-4.html
https://www.tpsmotorsports.com/test2...-set-of-4.html
Drifting
Joined: Sep 2019
Posts: 1,913
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From: Colo Spgs, CO
These should work. I was researching powder coating my brake calipers and TPS Motorsports offers these. And they are on sale.
https://www.tpsmotorsports.com/test2...-set-of-4.html
https://www.tpsmotorsports.com/test2...-set-of-4.html
TPS says they have a stainless option priced at the same $15/ea point as SpeedBleeder's, but a search failed to locate them. If available, buying from TPS should be about $7 cheaper, thanks to free S&H.
Pro
Joined: Oct 2021
Posts: 703
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From: Central TX
Thanks. A couple of issues, however... First, these are not stainless steel. Second, $41/four is about 45% more expensive than the non-stainless option at SpeedBleeder. Total cost for these from TPS is $82, versus a $63 from SpeedBleeder.
TPS says they have a stainless option priced at the same $15/ea point as SpeedBleeder's, but a search failed to locate them. If available, buying from TPS should be about $7 cheaper, thanks to free S&H.
TPS says they have a stainless option priced at the same $15/ea point as SpeedBleeder's, but a search failed to locate them. If available, buying from TPS should be about $7 cheaper, thanks to free S&H.
Drifting
Joined: Sep 2019
Posts: 1,913
Likes: 1,957
From: Colo Spgs, CO
I spent some time researching this. The Speed Bleeder site leaves a bit to be desired, with no application listed for 2019 Corvettes. There are, however, listings for earlier C7 MYs (2014-2018). According to their cross-reference, earlier MYs used part numbers "9497K", "14213", and/or "H9497-2" bleeder valves, all of which correspond to SB1010S-SS Stainless Steel Speed Bleeders. I sent an inquiry to Speed Bleeders via email, and will post any response I receive...
She confirmed 2019 MY should use the same as previous MYs - SB1010S-SS Stainless Steel Speed Bleeders or SB1010S NON-Stainless Steel Speed Bleeders. She also confirmed their stainless version has stainless steel body and internals, while their NON-stainless version has a non-stainless body with stainless internals.
Instructor
Joined: Nov 2018
Posts: 133
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From: Detroit Area
Vortech347 thank you. I was ready to say these are not Stainless Steel. But after reading everything. You can order them in Stainless Steel too. Not only that but they do polish them. They explained everything but the re-coating of the threads. I am thinking that you have to take the SS Speed bleeder out and re-coat the threads on it. Then it has to dry. Stainless Steel is hard, so you do not want to over torque them and ruin the seat on the caliper.
Drifting
Joined: Sep 2019
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From: Colo Spgs, CO
Racer
Joined: Jul 2013
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I had the same thing happen on my Z06 - one of the bleeder valves was rusted. Rock Auto has them and the price is low. I ordered one and it's been sitting in the box for a week or two now along with spark plugs that I'm not looking forward to installing. Never thought about stainless vs other metals; guess I'll find out when I get around to opening the box.
