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04-21-2023, 07:52 AM | #1 |
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Wheel Cylinder issues
Here's the short story.
Doing some long overdue maintenance on my high milage Deuce Roadster which includes front brakes. One of the original {USA} front wheel cylinders was leaking so I decided to replace both with new wheel cylinders. The new cylinders are now import quality so of course one of them leaked really bad during the bleeding process. Discovered the problem was the cup in the cylinder. At this point I'm not crazy about the poor quality of this import stuff! What I would like to do is just freshen up my original wheel cylinders. To do the rebuild I need 1-3/8 and 1 inch wheel cylinder cups. Would anyone know where I can get the cups in these sizes? Also wondering what other have done when they needed wheel cylinders. Ronnieroadster
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I use the F word a lot no not that word these words Flathead , Focus and Finish. "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block" Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline. First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH |
04-21-2023, 08:14 AM | #2 |
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Re: Wheel Cylinder issues
Fifteen years ago I put some foreign repro wheel cylinders in my car and found the hole leading in from the hose was drilled off center. With the cups pushed all the way in, the fluid would bleed past the cup lip. When I reassembled after cleaning, I made sure the shoes were adjusted to close to their final place, then put the fluid to the cylinder. Solved the immediate problem by making sure you weren’t making the cups overlap the hole.
About ten years ago I wanted to put some fresh cups on my rear cylinders. I went to the parts store and what would have been available in the drawers in the old days, now required a special order. It they were still able to order them in. |
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04-21-2023, 08:58 AM | #3 |
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Re: Wheel Cylinder issues
NAPA # 1499 for 1" cups and # 857 for 1-3/8" cups
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04-21-2023, 09:28 AM | #4 |
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Re: Wheel Cylinder issues
Hey
Ronnieroadster Did you find the "new" cups to be "shorter" in length than the good ole' USA ones??? IF so can you let us know how the NAPA ones turn out. I believe this discussion on the "new" wheel cylinders was had on a previous thread and I can't remember IF it was the cups that were different OR the hole for the fluid was in a slightly different location and this was causing cylinders to leak IF the cups got pushed back too far??? |
04-21-2023, 12:20 PM | #5 | |
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Re: Wheel Cylinder issues
Quote:
Another difference the shorter cups have a series of of ribs around that shorter .170 tapered area this makes the sealing surface almost non existent. There's also another problem I'm experiencing with the wheel cylinders they do not retract correctly compared to the original US wheel cylinders. This creates a dragging brake shoe issue I'm going to check and see what NAPA has will give an update once i have them in hand. This year makes it 50 years I've been driving the roadster updating parts and having an issue sure sucks. I'm going to rebuild the original wheel cylinders to get things back to normal. Thanks to everyone for your input. I'm off to NAPA Ronnieroadster
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I use the F word a lot no not that word these words Flathead , Focus and Finish. "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block" Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline. First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH |
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04-21-2023, 02:43 PM | #6 |
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Re: Wheel Cylinder issues
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04-21-2023, 03:25 PM | #7 | |
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Re: Wheel Cylinder issues
Quote:
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The only thing nice about being imperfect is the joy it brings to others.... "Silver rings, your butt! Them's washers!" "We shot our way out of that town for a dollar's worth of steel holes!" - from 'The Wild Bunch' - 1969 https://www.youtube.com/watch?v=7NReUd2_0u0 |
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04-21-2023, 04:11 PM | #8 |
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Re: Wheel Cylinder issues
I have fixed many of my wc by washing them in the kitchen sink with hot water and dish washer soap. Most of the time the rubber is re usable. Hot soapy water dissolves old brake fluid crud and leaves everything clean. A quick trip to the oven dries out the pores of the cast. use a knife to then scrape out any rings that are left in the cyl. The old practice was to hone cylinders when they were torn down and I believe it did more damage than good. Of course make sure the wife is not around.............
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04-21-2023, 04:31 PM | #9 |
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Re: Wheel Cylinder issues
If you can't get new good quality ones is there not someone who can sleeve the originals in stainless? You can never scrimp on brakes.
Gb
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04-21-2023, 06:32 PM | #10 |
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Re: Wheel Cylinder issues
I bought a set of China made w/c s and found they were dry, bleed hole was in right position, and phoney cups. After cleaning w/c s and lubricating, new cups from Napa they seemed good. If you have a lathe and a press, you can sleeve one yourself.
Good luck if you get caught after an accident Bruce
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04-21-2023, 07:56 PM | #11 |
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Re: Wheel Cylinder issues
I think it was White Post Restorations that can sleeve your cylinders in stainless
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04-21-2023, 08:35 PM | #12 |
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Re: Wheel Cylinder issues
Update today I was able to get good USA quality cups at NAPA they had 4 of each size in stock. Thanks Uncle Buck for the part numbers. I ordered an additional box of each size to keep in stock for the future.
Ronnieroadster
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I use the F word a lot no not that word these words Flathead , Focus and Finish. "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block" Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline. First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH |
04-21-2023, 09:52 PM | #13 |
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Re: Wheel Cylinder issues
Another solution if you are stuck using the bad (new) wheel cylinders is to mill the slot on the large piston a little deeper letting the cup move out and away from the miss-drilled hole.
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04-21-2023, 10:49 PM | #14 |
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Re: Wheel Cylinder issues
Glad I was able to help. Old parts books are irreplaceable.
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04-21-2023, 11:46 PM | #15 |
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Re: Wheel Cylinder issues
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04-22-2023, 03:22 AM | #16 |
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Re: Wheel Cylinder issues
My experience was that the mis drilled cylinders were for the rear. Front cylinders are normally ok. But I still dismantle and inspect just in case.
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04-22-2023, 05:46 AM | #17 |
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Re: Wheel Cylinder issues
Petehoovie, thanks for the picture of the N.B. Pease & Co. main building. I have spent many an afternoon at Pease's looking and sometimes finding what I needed. when Nelson was there, you would ask him for a part, he would know if he had the part and where it was located. Nelson did all of this from memory, no computer. I hope that Brian Keith can continue to provide the same service. There are few places left that have this quantity and selection of parts available.
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04-22-2023, 10:50 AM | #18 |
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Re: Wheel Cylinder issues
We just went through this on a friends' roadster. The hole where the fluid comes into the cylinder was drilled off center like others have said. The fluid comes in hitting the side of the rubber cup and pushes it away from the cylinder wall instead of behind it. It didn't matter who we ordered them from we got the same defective cylinders.
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04-22-2023, 07:09 PM | #19 |
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Re: Wheel Cylinder issues
Thanks for reporting back Ronnie - I think I'm going to see if I can order some from NAPA to have around here . . as sure as Hell I'll need them someday.
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04-22-2023, 08:55 PM | #20 |
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Re: Wheel Cylinder issues
What I’ve done is once I have everything in place and the shoes expanded to the drums is to apply air pressure into the wheel cylinder to push the piston and cups outward. This is all because the new offshore wheel cylinders aren’t made just right.
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