Adapter for Motive power bleeder

[Spart]

If you have a Motive power bleeder for doing your brakes/clutch, you may have noticed that Motive does not offer a Honda/Acura adapter for it.

The CTA 7030 adapter gets mentioned quite a bit for solving this problem, but it's plastic and the other adapters I have for my Motive bleeder are aluminum. There are apparently two slightly different sizes of Honda MC reservoir caps, and CTA sells two plastic models (aforementioned 7030 as well as 7033) but only one aluminum model. So I went out on a bit of a limb and bought the aluminum CTA 3933 to see if it would fit, and it does!

There are a number of ways to adapt the CTA to the 5/16" ID hose that Motive uses. I wanted to stay consistent with my other Motive adapters and also set it up for use with the Motive quick disconnect, so I elected to remove the 1/8" BSP to Nitto "Hi Cupla" fitting that comes installed on the CTA 3933 with a 1/8" BSPT to 8mm barb fitting. Note that BSP = straight and BSPT = tapered, but this didn't prove to be an issue. I tried and could not find a 1/8" BSP to 8mm or 5/16" barb adapter. Info I found online indicates that BSPT male into BSP female should work just fine.

This is the specific 1/8" BSPT to 8mm barb adapter that I purchased: https://www.amazon.com/dp/B0DPKZ7D7X

I would note that the original Nitto fitting has some sealant on the threads, and you'll want to thoroughly clean that out of the female threads on the CTA 3933 adapter before putting a new fitting on. That stuff could end up in your brake or clutch system.

 

[Chrisfl5]

Did you put any kind of sealant on the new fitting?

 

[Spart]

Did you put any kind of sealant on the new fitting?

Yes, I got the threads started a few turns (to help prevent any of it getting into the fluid flow path) and used a bit of liquid PTFE sealant on the remaining exposed threads before tightening it down.

There's quite a few suitable sealants out there, just make sure the way you apply it doesn't result in some getting into your brake system.

 

[Chrisfl5]

Ok thanks

 

[ImTheStatMan]

Another option that is plug and play:

https://agm-products.com/products/b...MIuJ6I7-7wlAMVBPvjBx0zvzQ1EAQYASABEgLrivD_BwE

 

[zumbooruk]

Which was the main reason I decided to get the Mityvac MV8500 Silverline Elite Automotive Brake/Clutch Bleeding kit. I maintain five cars, all different makes, each required a different adapter. I never bled breaks before, and did a lot of research. The Mityvac worked perfectly for me.

 

[Spart]

Which was the main reason I decided to get the Mityvac MV8500 Silverline Elite Automotive Brake/Clutch Bleeding kit. I maintain five cars, all different makes, each required a different adapter. I never bled breaks before, and did a lot of research. The Mityvac worked perfectly for me.

With vacuum bleeders, you never really know when you've gotten all of the air out of the system. The vacuum pulls air past the threads of the bleed screw constantly, so you just have to ignore the bubbles.

I much prefer a pressure bleeder for this reason. Plus having a bleeder full of fluid ensures that your master cylinder reservoir never runs dry while you don't have eyes on it, sucking more air in.

 

[Spart]

Another option that is plug and play:

https://agm-products.com/products/b...MIuJ6I7-7wlAMVBPvjBx0zvzQ1EAQYASABEgLrivD_BwE

Nice, have you used it yet? It looks exactly like the CTA.

We have an AGM adapter for the Polaris side by sides.

 

[zumbooruk]

With vacuum bleeders, you never really know when you've gotten all of the air out of the system. The vacuum pulls air past the threads of the bleed screw constantly, so you just have to ignore the bubbles.

I much prefer a pressure bleeder for this reason. Plus having a bleeder full of fluid ensures that your master cylinder reservoir never runs dry while you don't have eyes on it, sucking more air in.

Thanks,

Indeed I initially had air bubbles from air past the threads

But these bubbles stopped after I put some Teflon tape around the threads of the bleeding screws

Yet I indeed needed to check the master cylinder several times and refill as needed. but I did not get it dry or suck more air into the system. first time I did it, so I took my time going back and forth...

 

[ImTheStatMan]

Nice, have you used it yet? It looks exactly like the CTA.

We have an AGM adapter for the Polaris side by sides.

Yeah, I’ve used it. Works perfectly. And I agree, from the pictures it looks to work exactly the same as the CTA but with a plug and play air fitting for the Motive. I’ll throw a pic up when I get a chance.

 

[Spart]

But these bubbles stopped after I put some Teflon tape around the threads of the bleeding screws

Okay, I would not do this.

You never use teflon tape on a brake system, ever. All of the connections are designed to seal by metal-to-metal contact of the flared surfaces, to include the bleed screws. The threads should be clean and dry. Teflon tape can cause all sorts of problems. It's a lubricant, and will allow threaded connections to back out and loosen over time, and will also allow you to overtighten them which can lead to failure.

Bleed screws have to be repeatedly loosened and tightened, and this will cause the teflon tape to shed material, which could dissolve into the fluid in the brake caliper or interfere with the flared seal resulting in a leak.

Just use a proper bleeder. They are not an expensive tool to have for maintenance of such an expensive and capable machine.

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