Brakes

Dave Patrick

Member
Joined
Feb 9, 2021
Messages
20
Being in the ORG (Old GuysRule) class with umpteen years of futzing with flat fenders, I am struggling with how to present this. There's purist, practical and performance approaches to flat fenders. I think my approach to this topic is along the lines of I want my projects to look like they just rolled off the line in Toledo. However I don't want to wonder if I can stop at the end of a really long hill.

There is a lad in Durango, Colorado who developed a really cool adapter that allows one to have 11 inch disk brakes driven by our stock master cylinders. They provide great stopping performance!!! They fit the axles on all Willys vehicles. The reason I'm talking about this is the years of frustration I've had in getting 9 inch brakes to perform!

Drum diameter never seems to match shoe circumference. I've futzed with all the eccentric combinations trying to get even wear patterns to where the guys at the liquor store are wondering where this skinny old white guy puts all that beer!! I think I found the solution on the 2a page, but check out the adapters at Brennan's Garage.

I hope I'm not stepping out of line here, but the smile on your face will be well worth it when step on the stop pedal.
 

Rancho1

Member
Joined
Feb 6, 2021
Messages
10
Location
Michigan
. I'm with you. I like to keep it stock, but I've been looking around at all the options for disk brake conversions. I like this one because it seems everything is readily available and a reasonable price. It would be nice to hear from the guys that have done this, and what they have used.
 

MGillis

New member
Joined
Mar 10, 2021
Messages
2
I have Brennan's Trak disk kit and would never think about going back to the drum brakes. It has saved me a few times from the "incompetent" drivers out there.
 

Bruce W

Member
Joined
Feb 7, 2021
Messages
17
I would recommend the Geo Tracker brakes to anyone who wants disc brakes on their Willys jeep. I installed them on all four corners of M38Mike's M38 and he is really happy with them. I was happy with the way the conversion went, even though I am a "purist" and have no want or reason to convert any of my own. I used Brennan's brackets and they worked very well. We settled on the Tracker discs because we thought that they would be adequate, and not give us the weight and wheel clearance issues that the Chevy truck brakes bring, along with a lot of overkill. The original single-cylinder master is still doing its job very well, though we are going to change it to a dual cylinder. The only issue we have had is that one of his rear hubs is bent a bit and causes the rotor to wobble. It still works fine, but causes a noise. We are soon to fix that, too.
If I can help by answering any questions, I'd be glad to.
BW
 

Bill D

Member
Joined
Mar 25, 2021
Messages
9
I used Brennan’s brackets to put disc brakes on all four corners. I used Geo Tracker discs and calipers and some slightly longer lug studs. I have a Chevy 153 in mine with an overdrive and it will do 65 on the flat, (faster than I ever need to go), but I worried I’d pull the steering wheel off stopping it. I also have Saginaw steering and seat belts which makes my wife willing to go along for the rides :)
 
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Bill D

Member
Joined
Mar 25, 2021
Messages
9
It’s getting there. The transmission was a challenge but I’m working on that now.
 

Dave Patrick

Member
Joined
Feb 9, 2021
Messages
20
After driving my 2a with the conversion to the 11 inch disk brakes for a while I've come to the conclusion I need to add a proportioning valve to the back brakes line. There's more wear on the back brakes than the front and under hard braking the rear end tends to want to become the lead.
 

Bill D

Member
Joined
Mar 25, 2021
Messages
9
After driving my 2a with the conversion to the 11 inch disk brakes for a while I've come to the conclusion I need to add a proportioning valve to the back brakes line. There's more wear on the back brakes than the front and under hard braking the rear end tends to want to become the lead.
Might be time to consider a dual master cylinder? I haven't gone that route yet using the excuse that I'm waiting for the day I pull the tub off and put in the SM465. But maybe I won't wait.
 

Mark W.

Active member
Joined
Feb 6, 2021
Messages
35
Location
Silverton Oregon
Summit racing sells a number of adjustable Proportioning valves that go in the rear line. They are basically a valve that restricts the amount of fluid traveling to the rear brakes. 3-4 test drives and adjustments normally gets it spot on. I have one in my 11" dual master cylinder system I still need to adjust it but then I only have 45 miles on CHUG since returning to the road. And during those 45 miles about 1/2 the connections in the brake were leaking. SO I needed to address those first.
 
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