Bench bleed, master cylinder, rat rod

Gettin' there..

Category:

Autos & Vehicles

Tags:

• master cylinder
• bench bleed
• rat rod
• roadster
• street rod
• hot rod
• Cadillac engine
• Ford
• 33 Chevy frame

[stand4d37]

What type of fitting did you use to attach the clear hoses to the master cylinder?

[rpeek]

@stand4d37 Mine came with some little plastic screw in fittings that fit the hoses. I saved 'em from a while back, seem like they came with a master cylinder I bought somewhere along the way, but I suspect you can buy or make some..

[4u250ut]

this job cost $350 or more at the dealer.,,but DIY cost around $50..save lots of money...thanks for sharing..I did mine about $40 :)

[rpeek]

@4u250ut  It's true..

[paradigmnnf]

@stand4d37

Yes you can buy at most auto parts stores-- e.g., O'Riely or Autozone.

[opsvideo2008]

I think the best arrangement is to assemble the new master cylinder onto the car & use the plunger rod from the brake booster to bleed the new master cylinder. It means both the metal brake lines would be disconnected & in its place would be the plastic tubes, the ends of which would go back to the reservoir. Someone can then pump the brakes until the plastic tubes no longer show any air bubbles. Then remove the plastic tubes & reconnect the metal brake lines. Finally, bleed at the wheels.

[3sixty4five7]

This video was one of the more helpful bench bleeding tutorials on youtube. I think my problem is that I bench bled with it on the car, not knowing until now that pushing the pushrod with the MC in a vice will go further than pushing with a pedal. Doing a 4 wheel disk brake conversion on a 65 mustang. Thanks!

[rpeek]

@schrankm It's not installed on the vehicle. If it were the brake lines would be hooked up. They're not. They run into the reservior. that's the point to recycle the fluid and let the air escape. "On the vehicle" also implies having the cylinder on the opposite side of the firewall from the operator, which in this case it is not.. In this case, the frame of the car becomes the "bench".. 

[schrankm]

@rpeek if it's supposed to be done on the vehicle, why does every manufacturer say to "bench bleed" it on a bench? they specifically say NOT to bleed the master cylinder while installed on the vehicle.

[schrankm]

@rpeek no that's not what i said but you cannot get all the air out with the pedal but you can get most out. that's simply what i was saying.