Leaking New Brake Cylinders

Rutty

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I've been chasing my tail with my brakes since I bought my '68 Newport. The hydraulics were shot when I bought it so I bought and installed all new cylinders and lines. Since then I haven't been able to get the brakes to work correctly. The master has been slowly losing fluid from the front brake reservoir but only when the brakes are used. I think the rear seal is leaking. I also just discovered today that the real cylinders are leaking. Can anyone give me a recommendation on where to find quality replacement brake cylinders? These are from O'Reilly's and I'm sure are cheap Chinese examples. I've attached a few photos. Am I on the right track?

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polara10x500

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BY NO MEANS AM I AN EXPERT BUT TAKE THAT CHINESIUM CRAP OFF AN BACK TO THE AUTOCRAP STORE IF THAY WILL EVEN TAKE IT BACK. MAYBE TRY TO REBUILD THE OLD CYC. OR FIND NOS. I'VE HAD A FAIR SHARE OF BRAKE JOBS IN MY DAY AND WITH LOTS OF PATIENT YOU'LL GET IT RIGHT. SURELY SOMEONE ON HERE CAN DIRECT YOU TOWARD SOME USA MADE CYLNDERS. I RESTORED THE BRAKES ON MY 70 /6 DUSTER ALL DRUM MANUAL AN THAY WERE THE BEST BRAKES ON AN OLD CAR I EVER HAD MIND YOU IT WAS A LIGHT CAR BUT THAY WORKED GREAT.
 

Davea Lux

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Craig@mobileparts, a vendor on this site has quality replacements. The chicom wheel cylinders suffer from a lot of quality control and machining issues, so avoid them. I actually got a set from AutoBone that had the cups installed backwards, that was when I stopped using China crap. Castings on the chicom units are also usually of poor quality. If the booster has had brake fluid leaking into it, it is living on borrowed time and should be rebuilt. From the photo, yours does not look like the Master has been leaking out the rear.

Dave
 
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mrfury68

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Like Davea Lux mentioned in a previous post, Craig @mobileparts will have the quality, name brand parts our old cars deserve. He is a member here and a guru when it comes to new replacement parts for our rides. When you leave him a message he will get back to you. His prices are reasonable for the quality parts you are buying and his service is second to none. Several of us on this site have used him for parts and are very satisfied.
 

CBODY67

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Back when the cars were "used cars", it was common practice to disassemble the wheel cyls on the car, wipe them out, flush with some brake fluid in a squeeze bulb, wipe again and inspect. Then use a wheel cyl hone on the end of a drill motor to clean them up a bit. Flush with brake fluid again, the put a "wheel cyl kit" in the reconditioned cylinder. Bleed the brakes and call it "done".

Worst case scenario in more modern times, is to send the orig wheel cyls off and get them stainless steel sleeved. Then use a quality kit to rebuild them. OTHERWISE, contact Craig @mobileparts and be done with it.

Enjoy!
CBODY67
 

Rutty

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Thanks everyone for the help. I just placed an order with Craig @mobileparts for new wheel cylinders and a master cylinder. I'm looking forward to getting my Newport back on the road soon!
 

Gerald Morris

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I scoured the web and found myself some good, NOS Mopar brake cylinders, which WILL be SOON installed on Gertrude, as the chineseum SLAG cylinders the flipper installed leave MUCH to be desired. If you train your search engine AI a bit, you CAN find the GOOD STUFF still!
 
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