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Author
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Topic: Stuck calipers??
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buening
Journeyman Posts: 14
From: Decatur, IL
Registered: Mar 2005
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posted 04-18-2005 03:59 PM
   
Hello, i have done the Granada conversion and used all rebuilt calipers, new rotors and pads, well the usual. The brakes have been fully bled but it is quite difficult to spin the wheel by hand. I even removed the spindle nut as i thought it may have went on too tight but with the nut removed i have seen no difference. Is this common with new brake pads or do i have other problems. The wheels are not rubbing the calipers either, the pads are too close to the rotors. Thanks!------------------
1970 Grabber Blue Mach 1 H-code
1970 Fastback
2003 Torch Red Mustang
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Fastback68
Gearhead Posts: 3170
From: Sucat, Paranaque, Philippines
Registered: Jul 99
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posted 04-18-2005 07:24 PM
Those pads are actually supposed to be touching the rotors. If you can spin it about a third of a revolution after letting go, I'd say you're all right.
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bob6364
Gearhead Posts: 148
From: griswold,ct usa
Registered: Dec 2004
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posted 04-18-2005 09:55 PM
This may be obvious,but did you clean the rotors really well with brake cleaner before installation? Most come with a huge amount of oil on them.------------------
Bob
69 R Code Mach 1
70 Fastback 351C
71 coupe 302
99 F-250 Super Duty
2002 Exploder :)
http://community.webshots.com/album/214154666mXNhcr
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buening
Journeyman Posts: 14
From: Decatur, IL
Registered: Mar 2005
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posted 04-18-2005 10:49 PM
Well if they were oiled wouldn't they spin easier? Yeah i cleaned them really well and i would be lucky to get 1/8 turn. When i put the car in drive (in a gravel drive), the rear tires just spin and that's not from my 1500lbs of torque at the wheels  Just kidding.------------------
1970 Grabber Blue Mach 1 H-code
1970 Fastback
2003 Torch Red Mustang
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hardhat
Journeyman Posts: 58
From: summerland, ca
Registered: Feb 2004
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posted 04-19-2005 02:53 AM
Did you just put new wheels on?
If so, the rims are probably tightened down on the calipers. You'll need some wheel spacers if this is the case.
I learned this from experience......------------------
73' conv. 351C 2v mild cam, exhaust, fmx
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hardhat
Journeyman Posts: 58
From: summerland, ca
Registered: Feb 2004
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posted 04-19-2005 02:56 AM
Nevermind.......
I probably should have read your entire post!
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Hemikiller
Gearhead Posts: 617
From: Killingworth, CT
Registered: Feb 2002
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posted 04-19-2005 11:03 AM
Do you still have the drum master cylinder, or did you replace it with a disc brake master??
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buening
Journeyman Posts: 14
From: Decatur, IL
Registered: Mar 2005
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posted 04-19-2005 12:37 PM
quote:
Originally posted by Hemikiller:
Do you still have the drum master cylinder, or did you replace it with a disc brake master??
Yep, bought the master cylinder and booster as a whole rebuilt unit from autozone. And i am using stock wheels, pretty wierd. I checked the rotors without the wheel cause i thought the wheel was rubbing the calipers. The rotor itself is hard to turn and that was without the spindle nut. Probably gonna remove the caliper and check the rotor to make sure it turns fine with the spindle nut properly torqued. I wasn't sure if the brake pads had to wear down a bit and then the tire would turn easier. ------------------
1970 Grabber Blue Mach 1 H-code
1970 Fastback
2003 Torch Red Mustang
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Fastback68
Gearhead Posts: 3170
From: Sucat, Paranaque, Philippines
Registered: Jul 99
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posted 04-19-2005 06:04 PM
Is this happening the same on both wheels? Rebuilt or not, maybe the pistons are stuck up.
What happens when you activate the brakes from inside the car? Do they then become IMPOSSIBLE to turn by hand? Or no change?
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RonnieT
Gearhead Posts: 830
From: Port Allen, La. 70767
Registered: Jun 99
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posted 04-19-2005 08:56 PM
If I read your answer to hemikiller correctly you still have the drum brake MC installed on your car and that is your problem. The drum brake MC has a 8 PSI (IIRC) residual pressure valve in it and a MC for disc brakes will have a 3 PSI residual pressure valve in it. Open the bleeder valves on the calipers and see if the wheel spins freely with the pressure bled off, if it does get the correct disc brake MC and that should correct your problem.------------------
Ronnie
69 mach1 351W-4V engineless at the time!
70 Torino GT 351C-4v with a "shaker"
Mustangs and More Member #23
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Poes Fords
Journeyman Posts: 23
From: Talent, OR USA
Registered: Oct 2004
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posted 04-20-2005 01:02 AM
Hello, I just did the granada conversion on my 64 falcon, and my calipers seemed a little hung up also. I have a dual reservoir maverick master, and stock prop. valve. My calipers are remanufactured from ARI. I think as best as I can tell they just run a little on the tight side. Jason.
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buening
Journeyman Posts: 14
From: Decatur, IL
Registered: Mar 2005
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posted 04-20-2005 05:36 PM
This has the FRONT disc and rear drum M/C. The front bowl is smaller than the rear. It is doing the same for both wheels and i'll try opening up the bleeder valves to see if that helps any. I've had the car on the road and the brakes really grab when you press on the brake pedal. It feels like the brakes try to lock up when Pressing on the pedal and not slamming the pedal to the floor. I am also using the correct proportioning valve also so that one is out the window also. Thanks for the advice so far.------------------
1970 Grabber Blue Mach 1 H-code
1970 Fastback
2003 Torch Red Mustang
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DidgeyTrucker
Gearhead Posts: 1218
From: Greenbrier, TN USA
Registered: Oct 99
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posted 04-20-2005 07:20 PM
By front bowl you mean the bowl in front - not the bowl connected to the front brakes? The big bowl should be connected to the front brakes. If the residual valve in the MC for the rear brakes (small bowl) is connected to the front brakes, that is a problem.Tracy
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buening
Journeyman Posts: 14
From: Decatur, IL
Registered: Mar 2005
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posted 04-21-2005 09:13 AM
quote:
Originally posted by DidgeyTrucker:
By front bowl you mean the bowl in front - not the bowl connected to the front brakes? The big bowl should be connected to the front brakes. If the residual valve in the MC for the rear brakes (small bowl) is connected to the front brakes, that is a problem.Tracy
My mistake, it has the big bowl in the front and small bowl in the rear. My point was that the drums have equal size bowls and this one does not. They are connected to the correct locations. ------------------
1970 Grabber Blue Mach 1 H-code
1970 Fastback
2003 Torch Red Mustang
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