Author Topic: Wheel Cylinder Cup Expanders  (Read 1238 times)

324darrin

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Wheel Cylinder Cup Expanders
« on: August 24, 2020, 04:07:28 PM »
I posted this in the wanted forum a couple of weeks ago but have gotten no response so thought I would run it by you guys and gals. My new LEFT front wheel cylinder (on the Darrin) leaked from the large bore. A few weeks ago I disassembled my old wheel cylinder and found brass cup expanders that were not present in the new cylinder. I cleaned them up and installed them in the leaking cylinder and solved the problem. Fast forward to a couple of weeks ago and there was a puddle of brake fluid under the tire from the RIGHT front wheel cylinder. So I disassembled the old cylinder from that side but there were no expanders. So the hunt continues for a large bore expander (1 1/18") and a small bore expander (1"). Any help in locating these items would be greatly appreciated. Thanks, Steve , Darrin #3 
Currently
1954 Darrin
1965 F250
1967 Galaxie 500 2dr HT
1949 EL Harley Davidson
Formerly
1941 Chevrolet Special Deluxe Coupe
1947 Buick Super 4dr
1959 MGA
1961 Chevrolet Belair 2dr
1966 Ford Econoline
1967 Ford Econoline

pjkaiser

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Re: Wheel Cylinder Cup Expanders
« Reply #1 on: August 24, 2020, 06:04:13 PM »
I believe wheel cylinder rebuild kits provide cup expanders and are reasonably priced, you can try NAPA first, if not try O'Rielys.
Worse scenario would be to order a new wheel cylinder.
It's worth a try.
54 Darrin # 81
53 Kaiser Traveler Deluxe
51 Custom Henry J (Concept Car?)

324darrin

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Re: Wheel Cylinder Cup Expanders
« Reply #2 on: August 24, 2020, 08:43:41 PM »
Thanks for the reply. NAPA has been my go-to parts house for over 40 years. They failed me. The guy I bought the wheel cylinders did not respond to my inquiry. I broke down and made them out of sheet copper. I know that they might loose their form over time due to the softness of the material but that was all I could think of to get back on the road. Steve
Currently
1954 Darrin
1965 F250
1967 Galaxie 500 2dr HT
1949 EL Harley Davidson
Formerly
1941 Chevrolet Special Deluxe Coupe
1947 Buick Super 4dr
1959 MGA
1961 Chevrolet Belair 2dr
1966 Ford Econoline
1967 Ford Econoline

324darrin

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Re: Wheel Cylinder Cup Expanders
« Reply #3 on: August 24, 2020, 08:53:25 PM »
I just bought a 39-55 Ford Mercury Frazer Kaiser Wheel Cylinder Repair Kit off eBay that I did not need to get the expanders. $27 with shipping is worth having reliable brakes. Steve
Currently
1954 Darrin
1965 F250
1967 Galaxie 500 2dr HT
1949 EL Harley Davidson
Formerly
1941 Chevrolet Special Deluxe Coupe
1947 Buick Super 4dr
1959 MGA
1961 Chevrolet Belair 2dr
1966 Ford Econoline
1967 Ford Econoline

darrin502

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Re: Wheel Cylinder Cup Expanders
« Reply #4 on: August 26, 2020, 12:14:58 PM »
Hi this is Lee I found some call me.
520-591-8221
LM #1068
1954 Darrin # 103
1954 Darrin #  60
1954 Darrin #  51
1954 Darrin #  91
1954 Darrin # 394
1954 Darrin # 193
1959 Corvette
1968 Corvette
1968 Mustang
1959 Austin Healy Bug Eye Sprite
2002 Limited Edition Camaro