C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Recommend a pressure brake flush/bleeder

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Old Sep 9, 2025 | 01:47 AM
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Default Recommend a pressure brake flush/bleeder

I've got an 89 and have been using speed bleeder. I'm going to be installing a 95/96 master cylinder on with a brake bias spring mod.

Anyways, over the years I had been planning to get a Motive power bleeder to flush brakes. Just to use as as dry sump, I'd only be filling fluid into the reservoir.
But since then, I've learned the Motive company was bought out and people now say those models quality have dropped and they recommend not to buy.

What brake pressure bleeder/flusher would you recommend?

I've seem some good things on Orion Motor Tech. Though I've had no experience with this product. Looking at going pressure bleeder as I had a stuck speed bleeder that I had to replace:

Orion Motive Tech:

Amazon Amazon


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Old Sep 9, 2025 | 06:01 PM
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I have an older Motive Powerbleeder and never had any issues with it. Didn't hear about any issues with it later, but I haven't paid attention either.

That being said, the Orion one looks the same functionally. With Amazon accepting returns, its worth a shot.
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Old Sep 9, 2025 | 06:27 PM
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I’ve purchased the Orion unit twice now as they don’t last more than a year or three with brake fluid.

They keep changing it a little bit so the first one I got 6-7 years ago was different than the one I have now, which is different than the one shown.

the hoses are very good quality and I’ve contacted them to get some spare hose.

I clamp these on the slave (clutch) or caliper (brake) and use 15-20 psi to pump up fluid from the bottom to the top (reservoir) it works well and is required on some clutch slaves whenever it closes up under the vacuum method. Much more reliable to get the air out first go around than the vacuum method also.
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Old Sep 9, 2025 | 06:29 PM
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Originally Posted by AZSP33D
I’ve purchased the Orion unit twice now as they don’t last more than a year or three with brake fluid.

They keep changing it a little bit so the first one I got 6-7 years ago was different than the one I have now, which is different than the one shown.

the hoses are very good quality and I’ve contacted them to get some spare hose.

I clamp these on the slave (clutch) or caliper (brake) and use 15-20 psi to pump up fluid from the bottom to the top (reservoir) it works well and is required on some clutch slaves whenever it closes up under the vacuum method. Much more reliable to get the air out first go around than the vacuum method also.
That is a great idea!!! Of course it would work that way. Doh!
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Old Sep 9, 2025 | 06:42 PM
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Originally Posted by marshallnoise
That is a great idea!!! Of course it would work that way. Doh!
there is a little bit of an issue… works great for servicing a new system with no fluid. But if it’s a flush, you have to figure out a way to keep draining the res, and usually the dirtiest fluid is at the caliper.
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Old Sep 9, 2025 | 06:47 PM
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Originally Posted by AZSP33D
there is a little bit of an issue… works great for servicing a new system with no fluid. But if it’s a flush, you have to figure out a way to keep draining the res, and usually the dirtiest fluid is at the caliper.
Yeah, that makes sense. Could start a siphon or something. Or go full redneck and just let it go everywhere. LOL
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Old Sep 10, 2025 | 10:09 PM
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Of the brake pressure bleeders that are out now, what are considered the good brands? I'll be using a 95/96 master on my 89, so things should be easier with the screw on GM port.

I'd just be using this as a dry sump where I'll have to monitor and keep the master cylinder filled with brake fluid. Less risk of contamination that way, especially if the bleeder has been laying around for a few years.
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