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1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

strange M/C leak

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Old Mar 25, 2012 | 02:10 PM
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strange M/C leak

I seen brake fluid on the fire wall behind the brake pedal last week and its coming from the boot area, so i cleaned it up to see how bad the leak was and nothing. Drove it for a week and still nothing. Then last night i get in the truck and theres the fluid again. It's a 64 f250 manual brakes. Parts guy quoted me $75 for a new one, does that sound about right?
 
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Old Mar 25, 2012 | 02:39 PM
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I don't know, but I do know that a rebuild kit is much less expensive and doesn't take long to rebuild. The only thing you really need is snap ring pliers and a brake hone. Don't hone it much, just barely enough to make a difference.
 
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Old Mar 25, 2012 | 03:43 PM
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Originally Posted by 63' f100
I don't know, but I do know that a rebuild kit is much less expensive and doesn't take long to rebuild. The only thing you really need is snap ring pliers and a brake hone. Don't hone it much, just barely enough to make a difference.
We're talking brake master cylinders here not engine cylinders, so unless you are very, VERY lucky, there will be pitting and corrosion from moisture in the brake fluid that needs to be removed. Not sure how much oversize you can go, but you need to remove this, else the new rubber seals will just leak like the old.

Don't be surprised if it takes a lot of honing.
 
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Old Mar 25, 2012 | 03:56 PM
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Understood, but you want to remove as little as possible with a brake hone, otherwise you will just have to have it sleeved, in which case it is probably worth it to just buy a new master cylinder.

You wont know until you take it off and look at it.
 
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Old Mar 25, 2012 | 04:23 PM
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Ah, yes, I remember back in the 1960's spending hours honing to avoid having to buy a M/C that probably went for $12. or so.

But, I only worked part-time and at $1./hr., money was short and the time was available.

And, yeah, unless M/C is unavailable or truck is some type of real classic, I doubt if sleeving makes any sense.
 
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Old Mar 25, 2012 | 04:50 PM
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I'm not going to rebuild it, they never work right after or will start leaking in s short time. I'll probly just replace it.
 
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Old Mar 25, 2012 | 07:14 PM
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Originally Posted by 66crawler
I'm not going to rebuild it, they never work right after or will start leaking in s short time......
What facts do you base the above statement on?
 
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Old Mar 25, 2012 | 08:43 PM
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Originally Posted by OldHarley
What facts do you base the above statement on?
Garbz Sez its a bad idea.


Garbz
 
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Old Mar 25, 2012 | 08:51 PM
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Cardone Remanufactured 10-37781 - Master Cylinder | O'Reilly Auto Parts

Here is one for a whopping 18 bucks.

Garbz
 
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Old Mar 25, 2012 | 10:26 PM
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Originally Posted by garbz2
Garbz Sez its a bad idea.


Garbz
I don't agree with his opinion.
 
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Old Mar 26, 2012 | 12:37 AM
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Originally Posted by garbz2

Agreed! Why spend the time when you can buy one ready to bolt on... It comes down to how much is your time worth, and with a rebuilt from the parts stores you usually get a warranty too. Quite often you can get a core refund also. It is also a good time to upgrade to a better master too!
 
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Old Mar 26, 2012 | 12:39 AM
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You don't have to agree lol, if I rebuild it I'm not going to spend hours on it. I'll tear it down, throw seals at it then put it back together. I'd rather just get a new one and be done with it.
 
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Old Mar 26, 2012 | 12:50 AM
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I bought a new one when mine failed, a few weeks later I did the upgrade to full power dual master with the CPP bolt on kit.. the best move I ever made! Man it improved the driveability ! It was a $295 kit, but it made a massive difference, and it was about a one to two hour job to swap in.... Most of the time spent splitting the brake lines into two systems..
 
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Old Mar 27, 2012 | 12:50 AM
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Originally Posted by OldHarley
I don't agree with his opinion.
"He does not agree with his opinion" said in a slight British aristocratic accent along with a hand wave.........
 
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Old Mar 27, 2012 | 03:29 AM
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That would be cool jetcopter except I have a Dana 44 8 lug axle, I'd have to swap my whole axle for discs lol
 
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