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Grease Monkey
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Grease Monkey
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I have leaky brake wheel cylinders on my 1938 coupe. I have honed the cylinders and installed new kits but they still leak. Does anyone have an idea for a fix to this problem or do I need to purchase new cylinders. A few years ago I remember seeing an ad by someone who installed stainless steel inserts on cylinders but I don't have contact information now on anyone providing that service. Thanks Budd
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Shade Tree Mechanic
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Shade Tree Mechanic
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Budd, If after honing you can see any rust etched indentions in the cylinder bore the new kit won't seal up. I gave up years ago and now send mine to Apple Hydraulics in New Jersey or White Post restorations in N. Carolina where they insert a stainless sleeve and will put fresh springs, seals and cups if you pay extra. They arenot cheap but whats your life worth? I have never skimped on brake maintenence and never had a failure. Takes about 2-3 weeks to get 'em back.
DFC
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ChatMaster - 1,000
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Budd...Welcome aboard.....Maybe you have honed the cylinders too much...and you should replace the rubber cups. They are available at any Napa store as well as the cylinders.
I thinks the rubber cups 1"..but ask them. They are cheaper at Napa and you don't have to pay postage.
If you want to replace the wheel cylinders the Napa # for both rear is the same #3396...
On the front, the left & right are different...
Left Napa # 3731...Right Napa #3730
You might want to replace the bleeder screws as well because you can't get a bleeder hose to fit on the old small bleeder screw...The Napa # for these bleeders screws (all 4 the same )is 6858.....Btw You might want to replace the brake hoses while you are at it Napa has them also..... GOOD Luck ED
Last edited by ED1938; 06/21/12 08:19 PM.
I was only wrong one time in my life so far. But that time I was right, and only thought I was wrong....ED
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The cylinders are 1 in on the rear and 1 1/4 on the front.
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Budd WELCOME to the VCCA Chevy Chatter web site.
Last edited by Andys29; 06/22/12 05:58 AM.
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Welcome to Chatter
I would not bother honing a wheel or master cylinder as I have not been able to get honing stone fine enough for a reliable seal.
Either get new cylinders which by all indications are reasonably readily available or get your existing cylinders professionally resleeved with stainless.
Tony
Last edited by tonyw; 06/22/12 06:07 AM.
1938 1/2 ton Hope to drive it before I retire
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Grease Monkey
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Grease Monkey
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DFC
Thank you so much for your input. It is great to have the name of a supplier if I decide to go with stainless inserts.
Budd
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Grease Monkey
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Grease Monkey
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Ed 1938
Thank you so much for your input. I will contact NAPA and inquire about new wheel cylinders and thanks about the info on new bleeder screws. It is frustrating that a bleeder hose doesn't fit the old bleeder screws.
Budd
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Welcome to Chatter
I would not bother honing a wheel or master cylinder as I have not been able to get honing stone fine enough for a reliable seal.
Either get new cylinders which by all indications are reasonably readily available or get your existing cylinders professionally resleeved with stainless.
Tony I was going to mention that last night...you can hone and hone and a lot of times it's just a waste of time...You never really know how deep the corrosion has "etched" in to the iron...I've even bored out .010" on a lathe and they didn't "clean-up"...I just ruined them...Now, the bores to big...I just toss'em and start fresh...Saves time...
1947 Fleetmaster Sport Coupe VCCA # 47475
If it's not wearing a Bowtie...It's not properly dressed...!
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Technical Advisor ChatMaster - 10,000
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Technical Advisor ChatMaster - 10,000
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If you have the time I highly suggest you send your cylinders for relining with brass or stainless. The new cylinders will corrode very soon on a car that is not used daily. This will not happen with the reline. You can purchase the kits from any parts store for a reasonable cost. This is as close as you can get to a permanent brake job.  
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
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I assume you mean you can buy re-build kits for your wheel cylinders...and send out the cylinders for relining...I haven't actually seen "reline" kits, but wouldn't that be nice...
1947 Fleetmaster Sport Coupe VCCA # 47475
If it's not wearing a Bowtie...It's not properly dressed...!
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Technical Advisor ChatMaster - 10,000
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Technical Advisor ChatMaster - 10,000
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You are correct, that was not really clear. So, relining was one step and then purchase the cylinder kits from your local parts house.
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
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