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Author
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Topic: 67-65 master cylinder swap
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Rob Parsons
Gearhead Posts: 180
From: Lebanon,TN
Registered: Jan 2000
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posted 02-05-2001 10:09 AM
   
Which pushrod should be used for this swap on a manual brakes car? Can a power brake master cyclinder be used or will that cause braking problems due to the larger resovior? I have one for a 73 that I could rebuild if so.
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John1966
Journeyman Posts: 23
From: Hartford, CT
Registered: Nov 2000
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posted 02-05-2001 12:24 PM
I bought a '67 MC from Autozone. The push rod that can with it will result in the same overall length as the one from the '66, so its a direct bolt in. If you compared a '66 push rod to the '67, the '67 is longer, but it goes farther into the MC. [UPDATE:] Based on what others have said about the push rod length, I double checked mine and if I used the '67 push rod in the '67 MC, it would be shorter over all. So I'm going to use the '66 push rod in the '67 MC also.As for the power booster, I don't think it will fit because it will hit the side of the engine bay on the driver's side. A company called Trans Am racing makes an adapter which allows a power booster to be used. ------------------
Thanks,
John
visit my site:
www.familyshoebox.com/family/petstang [This message has been edited by John1966 (edited 02-09-2001).]
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Rob Parsons
Gearhead Posts: 180
From: Lebanon,TN
Registered: Jan 2000
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posted 02-05-2001 02:11 PM
Did you use the 67 manual drum setup in your 66 manual drum car with no problem?
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John1966
Journeyman Posts: 23
From: Hartford, CT
Registered: Nov 2000
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posted 02-05-2001 02:42 PM
I haven't finished the swap yet, so I don't know if it will work. However, I'm optimistic because I got advice from three mustang forums (including this one) before I began the swap, including people who performed the swap before and said it worked fine. I'll know in March whether it worked for me.------------------
Thanks,
John
visit my site:
http://familyshoebox.com/family/petstang
visit my homepage: www.familyshoebox.com/family/petstang [This message has been edited by John1966 (edited 02-05-2001).]
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kcode
Gearhead Posts: 2408
From: alvaton,ky,usa Suburb of Bowling Green, M&M #79, MCA #29208
Registered: Jun 99
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posted 02-05-2001 10:55 PM
Rob,
I'm using the 67 manual MC with the 66 push rod. I compared the depth of the cavity in the piston and it was the same on the 66 to 67, measured from the mounting face. The 66 is about 5/8" longer.Mike
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Rob Parsons
Gearhead Posts: 180
From: Lebanon,TN
Registered: Jan 2000
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posted 02-07-2001 09:50 AM
Thanks Mike. The 67 rod is 5/8" shorter? Do you think that will be a problem causing the piston to not have enough travel? If so, I should be able to use the 65 rod. The MC I bought has a rod in it already. Are they difficult to remove? I have not looked at it too closely.
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steve'66
Gearhead Posts: 5272
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 02-07-2001 10:21 AM
Rob,I did this swap on the '66 using a '67 m/c. I used the '67 pushrod and there isn't much pedal travel. I works, but you notice it when bleeding the brakes, the pumping stroke is only about 1/2 of what it should be. I've been thinking I need to lengthen the pushrod, but if the '66 is 5/8" longer maybe I'll try it (if I can find it?). The pushrods are held in with a spring clip. I've alway forced the rod out and replaced the spring clip when reinstalling the new pushrod. SteveW
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Rob Parsons
Gearhead Posts: 180
From: Lebanon,TN
Registered: Jan 2000
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posted 02-07-2001 12:13 PM
I will measure the rod on my car when I get it out. Thanks for the feedback Steve
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2bav8
Gearhead Posts: 191
From: Mesa, AZ
Registered: Jun 99
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posted 02-07-2001 12:25 PM
I used a 69 MC out of a Mustang (same part# as a 67) with my '66 pushrod. The pedal travel is great.------------------
2BAV8 Mustang
www.geocities.com/2bav8
[email protected]
1966 Restomod Coupe
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Rob Parsons
Gearhead Posts: 180
From: Lebanon,TN
Registered: Jan 2000
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posted 02-22-2001 11:43 AM
Sorry to drag this topic up again, but how is the rod removed from the piston? I remove the snap ring and got the piston/rod assembly out of the MC. Looks like the rod is not made to be removed from the piston. I did not try too hard to force it out because I did not want to damage it. Any suggestions?
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steve'66
Gearhead Posts: 5272
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 02-22-2001 11:58 AM
Rod,I use vise grips to force it out. The end of the rod is ball shaped with a spring clip on it. After you force it out of the piston, you should replace the clip. SteveW
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kcode
Gearhead Posts: 2408
From: alvaton,ky,usa Suburb of Bowling Green, M&M #79, MCA #29208
Registered: Jun 99
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posted 02-22-2001 10:09 PM
Rob,
to salvage the 66 rod for Becks car, I ended up taking the piston out of the old MC and using a die grinder to cut the piston apart. I tried everything I could think of to get it out. I have heard that Ford had a tool to remove them. I've never seen it though.  Mike
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Rob Parsons
Gearhead Posts: 180
From: Lebanon,TN
Registered: Jan 2000
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posted 02-23-2001 08:53 AM
Mike,
The rod in the 65 mc came right out and was not pressed into the piston like the 67 Mc I got at Advanced. Did you, or anyone else reading, leave the piston in the 67 mc to remove the rod? I don't think I can get the rod out otherwise without damaging the piston. How is Becky's car coming along?
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