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Gremlin Power disc brake swap |
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jesse21
AMC Apprentice Joined: Feb/21/2012 Location: Saskatoon, SK Status: Offline Points: 33 |
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Posted: Mar/06/2012 at 11:16pm |
I want to change my manual drum brakes to power disc brakes on my 74 gremlin x and was wondering has anybody done this before. whats all involved in the process?
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FuzzFace2
AMC Addicted Joined: Jul/05/2007 Location: Angier, N.C. Status: Offline Points: 10343 |
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I am thinking you would need to find a small body car to get the parts from for your car. Now I have not seen a lot of power brake small body cars let alone power disc.
I have a 75X factory v8 car with drums non-power and a 76x 6cly with disc/drum non-power. Both stop fine just need a little more leg is all.
The disc swap is easy either with stock parts if you can find them or useing after market parts from just brackets and you get the parts from junk yards or new to full bolt on kits like Wilwood. Again none would be power as you would need to fine a small car booster.
Dave ----
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TSM = Technical Service Manual
75 Gremlin X v8 for sale 70 Javelin 360/auto drag car 70 Javelin 360/T5 Street car |
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THE MENACE
AMC Addicted Joined: Nov/04/2008 Location: So. California Status: Offline Points: 4428 |
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This is kind of an expensive way to go, but you could get a reman brake booster (#NBB5473524 $108.00) from NAPA and pay the core charge ($45.00), or return a different booster core.
The above part number is in fact for a 74 Gremlin (disc/drum) brake booster and NAPA currently has 4 units in stock at their central warehouse.
Dennis Edited by THE MENACE - Mar/07/2012 at 3:40pm |
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Former Owner of:
The Craig Breedlove "AERO AMX" Still Owner: SS/AMX #9 replica (THE BIG MENACE) 70 AMX 416, EFI, Nash 5 speed 70 Javelin 401, 727 (Wife's) 72 Gremlin Autocross Project. |
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SportaboutX
AMC Addicted Joined: Nov/10/2011 Location: West Coast Status: Offline Points: 1010 |
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I could get everything you need (minus calipers/rotors etc that you can still buy new) from a junkyard 74 hornet with factory power disk brakes for cost of parts, my gas and some time. However most guys want the 79+ setups for the cheaper parts. Willwood is really appealing in that they are cheap if you have to buy new parts for an early setup to go with a conversion. A set of 74 rotors alone runs in the $250 range.
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kirkwood
Moderator Group Charter Member Joined: Jun/28/2007 Location: Fort Wayne, IN Status: Offline Points: 6564 |
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you would need to still find the bracket forMenace's solution. The reman's that I have seen and bought don't supply that part, and it is unique to the power boosters (drum or disc the same) in small cars.
If originality isn't a concern i'd put the complete setup (brakes, booster etc) from a concord or spirit on it. Those are still pretty easy to find. |
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AMO Newsletter Editor
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THE MENACE
AMC Addicted Joined: Nov/04/2008 Location: So. California Status: Offline Points: 4428 |
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You can even get drilled and slotted rotors for the OE Concord setup if you wanted them.
Dennis
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Former Owner of:
The Craig Breedlove "AERO AMX" Still Owner: SS/AMX #9 replica (THE BIG MENACE) 70 AMX 416, EFI, Nash 5 speed 70 Javelin 401, 727 (Wife's) 72 Gremlin Autocross Project. |
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Fluffy73
AMC Addicted Joined: Nov/21/2007 Location: Castlegar, BC Status: Offline Points: 3059 |
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I second the idea of finding a Concord. I myself used Spirit brakes on my manual drum Hornet. It's pretty easy! Well, I suppose finding all the parts on a complete car is the easiest, then just swap things over. The hardest part is changing a few lines for the new master and for the proportioning valve.
I should dig through my collection of goodies. I think I have enough to do 1 more car. I don't know if I have another prop. valve or not. I'm pretty certain I have the front suspension and the master/booster/bracket.
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I am genetically incapable of being Politically Correct.
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73hornut
AMC Addicted Joined: Jul/03/2007 Location: Southern Oregon Status: Offline Points: 3129 |
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Anyone selling a mast/booster bracket setup from a hornet/concord/eagle, please let me know. Jim
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71 Javelin
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