Plugs for a master cylinder
 

Hi, sorry to ask here but the miata board has gone quiet. I think I need to bleed my master cylinder. Based on the video I have watched, I need to bench bleed. I have never done this before so hopefully I don't make things worse. Anyhow, I guess I need to remove the MC from the car and plug all the locations the brake lines screw into.

Any idea where I would get plugs that would screw over and seal where the brake lines were attached? This design seems as dumb as me letting the MC run dry. :)

Thanks,
David

Do you actually need to screw the plugs in? I've seen plastic plugs, that did a pretty good job of sealing the holes, online and at FLAPS. I think you can get an assortment.

Hmm, not really seeing much online. Maybe I had a vacuum cap assortment and used that short term.

I did see that you can get male inverted flare plugs which would screw in.

I also saw assortments of silicone plugs that are sold as being used for powder coating which would probably work.

I think if you purchase a power bleeder (like a motive), bench bleeding is usually not necessary. Maybe someone like Fred or Dan J can chime in.

Edit: This might help you as well for bleeding. https://www.napaonline.com/en/p/NDP7001795 .I use vacuum caps to seal the male connectors on the lines. Your local auto parts store may have an assortment for $5-$8.

The little plugs used to come with the replacement mc. Recently , I have not been seeing this as much .
I am confused as to why you would need to bleed a mc that is currently on the car ?
Usually, you can get a good bleed, without bench bleeding, but when I am replacing a mc, I almost always bench bleed first.
You can also , bleed traditionally , by pumping the pedal, holding it down, while loosening the lines right at the master .
Good luck! Let me know if I can help .

One method of M/C prep on the car:
-Get a short piece of brake line and cut in center. Clean and blow out everything.
-Loop them in a circle to dump back into the top reservoir.
-Pump fluid through using the pedal. (if on the bench you can use a rounded rod carefully).
-Reattach brake lines

Thanks everyone. I am learning as I go. Trying to help son out.

I called Wilwood and got some further instructions. It appears I was doing something wrong which I will not reveal due to preserving what little reputation I have here.

Hopefully the MC will not need bleeding.

Thanks again, enjoy the weekend.

Yes, if you did not remove the master cylinder, you should be fine with a good old fashioned 2 man pedal bleed . We all have to learn somehow! I find myself schooled on a regular basis these days
Good luck .

This is what I’ve done in and out of the car.