Stop in for a cup of coffee

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People these days under rate drums cause they put cheap linings on and don't adjust them properly.
Drums have less drag - for 1/4 mile racing they are usually more than sufficient. The big problem with drums is when they can't be cooled off. For most cars thats not an issue on the on the drag strip. Its one stop then something like 10 to 15 minutes before the next stop.
I wonder if they could cool them with ducting and fans like what dedicated race cars run so at that point you’re better off with discs
 
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Sometimes the number is used as the part number
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A minor problem these days can be consolidation by the aftermarket.
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I looked again if there is one it may be on the inside lip that I can’t see.

These have been on the car for almost 50 years.
 
agreed and lighter and doesn't likely get road raced either. Probably just sits in an air conditioned garage and taken to a show now and again. Honestly, unless driving in heavy city traffic regularly, discs have no need. Just easier to change pads. I have warped rotors before, but never a drum. strange.
An anchor broke on my '74 Nova with a straight six.
But I also drove it hard as I could and autocrossed it regularly.
Best parts came from the junk yard even then.
Got new backing plate and good semi-metallic shoes. LOL
 
My plan was to replace them just because of time. However they look pretty good. Do wheel cylinders go bad just sitting so long? I pulled all the lines and will replace them, but maybe clean these up and run em’
 
I wonder if they could cool them with ducting and fans like what dedicated race cars run so at that point you’re better off with discs

[QUOTE="Mattax, post: 1973786435, member: 29156"
<snip>

... its always fun to watch how long Edsinger's Corvair stays competitive with drums on all four.


You'll have to go on to part 2 before his brakes get too hot and he need to back off a bit.
The guy chasing him with the dash cam is in a much newer BMW (1987 with disk brakes).
The rules are factory iron brakes, so that limits what a Corvair can use.
 
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My plan was to replace them just because of time. However they look pretty good. Do wheel cylinders go bad just sitting so long? I pulled all the lines and will replace them, but maybe clean these up and run em’
They can . If you do end up replacing the drums, very carefully work that outer spring off and put on your new drums.
 
My plan was to replace them just because of time. However they look pretty good. Do wheel cylinders go bad just sitting so long? I pulled all the lines and will replace them, but maybe clean these up and run em’
have to check them, the rubber covers get brittle and leak, cylinders seize in the bores, etc. They are cheap, I would replace the wheel cylinders myself.
 
My plan was to replace them just because of time. However they look pretty good. Do wheel cylinders go bad just sitting so long? I pulled all the lines and will replace them, but maybe clean these up and run em’

I'm probably the worst one to make suggestions..."while you're in there" rubber starts to fail just over time
 
My plan was to replace them just because of time. However they look pretty good. Do wheel cylinders go bad just sitting so long? I pulled all the lines and will replace them, but maybe clean these up and run em’

If you're thinking of making a fluid type change, this would be the time. I assume you're also replacing the MC?
 
Do wheel cylinders go bad just sitting so long?
If moisture gets in, yes.
Do they move? do they seal? If so, bleed 'em and probably good to go.
That assumes the bleeders are not stuck or filled with rust.
Could also remove them and look inside. Use lots of penetrating oil on the fittings and flare wrench that fits well.

The worst brakes I've had in terms of rust have been the GM disks on the Grand Wagoneer. No idea why. Maybe the plaster/aluminum master cylinder lets in more moisture than a cast iron master? Maybe its just in the seals and design of the clipers. I don't know. But it gets bled every year now, just like my Barracuda.
 
My plan was to replace them just because of time. However they look pretty good. Do wheel cylinders go bad just sitting so long? I pulled all the lines and will replace them, but maybe clean these up and run em’
They can be rebuilt easily and if you go dot 5 brake fluid all of them have to be new or rebuilt.
 
Rebuild kits have all the rubber for the wheel cylinders.
Open them up first and make sure the bore is not pitted. Light rust can be removed with crocus, but any pits will need to be honed or lined. At that point, use a replacement if available.
 
Any part numbers on the brake cyl? Then it is easy. Still weird 2,5 shoes on the front. Bet it is a mix of the best available back then.
 
Check Rock Auto or other parts store for rebuild kits and Pads that are in stock if you're concerned.
Just call Craig, I have his number somewhere. I am sure he has all of it and just looking tell you what it is. Rubber you do not want NOS, it is dried out by now. I wih he would pop in, but is really hurting the Long Island cops beat the crap out of him in his house to boot! Guess what miistaken identity, wont see his white *** on the news you know.
 
All this brake talk. My Fargo left front brake howls. Im thinking my adjustment is off, one lining isnt making full contact. That one has 4 adjusters. Major and minor. Real pain to set up. I need to get it into shop.
 
really hurting the Long Island cops beat the crap out of him in his house to boot! Guess what miistaken identity, wont see his white *** on the news you know.

What the hell?

Rubber you do not want NOS, it is dried out by now

Yup... rebuilt mine with parts from NAPA. The baby version of what @Maxcustody is working with. This is 9" kit so I don't think they're correct for your application... just showing what comes in it

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