More brake holding power - Page 2

Billy Nees · 04-02-2012, 06:47 PM

Jim, Mike and Tom are correct. If you removed the booster you should mount the MC in the two top holes left from removing the booster. Then raise the pivot on the pedal. If you're lucky, the hole is already in the pedal. I was assuming you had done that already. Still, with a turbo car look at the Vista Cruiser rear brakes.

Mark Yacavone · 04-03-2012, 02:02 AM

Rick , Whatever you end up with for shoes, take them down to Phoenix Brake and Axle and have them relined with the good material as full length (secondary) shoes..

Mid 70's Malibus, Cutlasses and LeMans mid size cars have the 11x2 shoes...

Jeff Lee · 04-03-2012, 02:39 AM

Neil once had a source for asbestos brake lining material. He also used to use material designed for fork-lift brake shoes; very soft stuff and holds great.
Ask Neil...

Jim Wahl · 04-03-2012, 09:28 AM

Quote:

Originally Posted by Billy Nees

Rick, what you may want to look at is late 60s early 70s Olds Vista Cruisers. As I recall they had 3"x 9.5" rear drums and shoes instead of the 2x9.5"s on your "bird. You will probably need backing plates and all but there should be a way to make them fit!
Sean, GM cars don't have proportioning valves. They bias the brakes with MC bore size and WC size.

Billy could make it work with what he has in his kitchen!!! Listen to this guy Rick! He is the king of "Hey! I know how to make that work!". Jim

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Run to Rund · 04-03-2012, 10:46 AM

John Andreotti at Ott's Friction Supply has some soft material that won't glaze and stops well on the top end, yet holds the car well at the line. I believe Abex makes it and it is tan in color.

Rick Unterseh · 04-03-2012, 11:54 AM

Thanks everyone for your suggestions, looks like I'm gonna be busy getting this thing to hold. I hated losing class AND second round, so I'm making sure this doesn't happen again.

Dave1695 · 04-03-2012, 12:25 PM

You went the wrong way on both rear wheel cylinders and master cylinder bore size. Smaller wheel cylinders will push harder on the brake shoes and a smaller bore master cylinder will generate more line pressure, at the calipers and wheel cylinders. Use a one inch bore master, 7/8th inch bore wheel cylinders and check line pressure at the bleeder screws. you need minimum 950 to 1100 PSI at front and should get 800 to 900 at rear without any adjustable proportioning valve in line. Plumb the master cylinder direct to the brakes for maximum pressure.

njk53 · 04-03-2012, 02:30 PM

Does anyone know if you can get asbestos brake pads in Mexico?

Mark Yacavone · 04-03-2012, 03:35 PM

Quote:

Originally Posted by Mark Yacavone

Rick , Whatever you end up with for shoes, take them down to Phoenix Brake and Axle and have them relined with the good material as full length (secondary) shoes..

Mid 70's Malibus, Cutlasses and LeMans mid size cars have the 11x2 shoes...

Sorry, that would be :

Arizona Brake and Clutch

2211 N Black Canyon Highway
Phoenix, AZ 85009
(602) 256-7966

Myron Piatek · 04-03-2012, 04:05 PM

If you do some research and ask around, you can still find organic pads and shoes at the parts store. Probably not as good at cold holding ability like specialty relined stuff, but definitely better than the usual semi-metallic. Lightly scuffing the rear shoes with sandpaper to eliminate any glaze build-up helps also. I do it whenever I swap rear tires from side-to-side.

04-02-2012, 06:47 PM	#11
Billy Nees VIP Member Join Date: Oct 2002 Location: On a hilltop in Pa. Posts: 4,499 Likes: 3,601 Liked 7,780 Times in 1,743 Posts	Re: More brake holding power Jim, Mike and Tom are correct. If you removed the booster you should mount the MC in the two top holes left from removing the booster. Then raise the pivot on the pedal. If you're lucky, the hole is already in the pedal. I was assuming you had done that already. Still, with a turbo car look at the Vista Cruiser rear brakes. __________________ Billy Nees 1188 STK, SS I'm not spending 100K to win 2K

04-03-2012, 02:02 AM	#12
Mark Yacavone Veteran Member Join Date: Mar 2002 Location: Miles From Nowhere Posts: 7,819 Likes: 2,910 Liked 5,126 Times in 1,954 Posts	Re: More brake holding power Rick , Whatever you end up with for shoes, take them down to Phoenix Brake and Axle and have them relined with the good material as full length (secondary) shoes.. Mid 70's Malibus, Cutlasses and LeMans mid size cars have the 11x2 shoes... __________________ "We are lucky we don't get as much Government as we pay for." Will Rogers

04-03-2012, 02:39 AM	#13
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Re: More brake holding power Neil once had a source for asbestos brake lining material. He also used to use material designed for fork-lift brake shoes; very soft stuff and holds great. Ask Neil... __________________ Jeff Lee 7494 D/S '70 AMX

04-03-2012, 10:46 AM	#15
Run to Rund Senior Member Join Date: Sep 2007 Location: Henderson, NV Posts: 583 Likes: 8 Liked 54 Times in 27 Posts	Re: More brake holding power John Andreotti at Ott's Friction Supply has some soft material that won't glaze and stops well on the top end, yet holds the car well at the line. I believe Abex makes it and it is tan in color.

04-03-2012, 11:54 AM	#16
Rick Unterseh Member Join Date: Jul 2006 Location: Phoenix, Arizona Posts: 133 Likes: 3 Liked 31 Times in 7 Posts	Re: More brake holding power Thanks everyone for your suggestions, looks like I'm gonna be busy getting this thing to hold. I hated losing class AND second round, so I'm making sure this doesn't happen again.

04-03-2012, 12:25 PM	#17
Dave1695 Member Join Date: May 2009 Posts: 160 Likes: 0 Liked 15 Times in 11 Posts	Re: More brake holding power You went the wrong way on both rear wheel cylinders and master cylinder bore size. Smaller wheel cylinders will push harder on the brake shoes and a smaller bore master cylinder will generate more line pressure, at the calipers and wheel cylinders. Use a one inch bore master, 7/8th inch bore wheel cylinders and check line pressure at the bleeder screws. you need minimum 950 to 1100 PSI at front and should get 800 to 900 at rear without any adjustable proportioning valve in line. Plumb the master cylinder direct to the brakes for maximum pressure.

04-03-2012, 02:30 PM	#18
njk53 Senior Member Join Date: Jul 2007 Location: East China, MI Posts: 504 Likes: 0 Liked 0 Times in 0 Posts	Re: More brake holding power Does anyone know if you can get asbestos brake pads in Mexico? __________________ Nelson Kowal Stock 345

04-03-2012, 04:05 PM	#20
Myron Piatek VIP Member Join Date: Nov 2001 Location: Florida Posts: 1,542 Likes: 34 Liked 138 Times in 51 Posts	Re: More brake holding power If you do some research and ask around, you can still find organic pads and shoes at the parts store. Probably not as good at cold holding ability like specialty relined stuff, but definitely better than the usual semi-metallic. Lightly scuffing the rear shoes with sandpaper to eliminate any glaze build-up helps also. I do it whenever I swap rear tires from side-to-side.