No good...brakes kinda suckin' - Page 2 - Chevy Impala SS Forum
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post #11 of 42 (permalink) Old 06-15-2018, 01:58 PM
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Originally Posted by babywag View Post
Well, hydro boost and yank ABS definitely got moved up the list yesterday......
Since you're gonna install a hydroboost, you'll also want to consider a rebuilt and bullet-proofed power steering pump as well.

Here the Hydroboost I'm about to install in my '96 Impala that has a big-assed cam and almost zero vacuum: --->> Welcome to Hydratech Braking Systems!

#3512-BASE 1980 - 1996 Chevrolet Full Size Hydraulic Brake Assist System WITH PS LINE SET (late / short GM MC pushrod) $800.00

Expect a 6 week delivery window.

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1995 DCM SS, LS3, Texas Speed 260cc PRC heads, Lingenfelter GT1-1 cam, V-max 90mm TB, Headman 1 7/8 LT Headers, 2 1/2" cat-back, 3200 Circle-D TC, 3.73 gears -- 493HP/434TQ @ the wheels (Daily Driver)


2014 Chevy SS; Low Lash Solid Roller 429ci LS3 -- 548HP/464TQ @ the wheels....

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post #12 of 42 (permalink) Old 06-15-2018, 02:08 PM Thread Starter
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PS pump rebuilt by me already.
Iím just going to use an astro van HB unit.
Same setup that I intalled in my Jeep.
Easy to do really, only thing diff. will be crazy long hoses that these use.

Staggering improvement on Jeep and has been problem free for many years.
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post #13 of 42 (permalink) Old 06-15-2018, 08:13 PM
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Well, hydro boost and yank ABS definitely got moved up the list yesterday.

Your images prove your brakes locked and you skidded.


Why would not start with better tires that would have more traction and keep the wheels spinning?


How is hydro-boost going to improve things?
You have proved the stock brakes have enough force to lock the wheels.
Todd TCE likes this.

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post #14 of 42 (permalink) Old 06-15-2018, 09:06 PM
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post #15 of 42 (permalink) Old 06-16-2018, 12:13 PM
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Quote:
Drums tend to be less effective as they wear because they have to travel greater,and greater to reach the drum. Auto-adjusters leave a lot to be desired. So,plan on adjusting them yourself at least every year.
1slow96


Quote:
Bet rear "sliders" are seized,and have been for some time... Making them all but useless.
1slow96


Whatever type of brakes are used they have to be in serviceable condition before the master system can activate them.



It does not matter what kind of brake boost is used if the basic parts of a braking system are malfunctioning.

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post #16 of 42 (permalink) Old 06-16-2018, 12:28 PM Thread Starter
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Quote:
Originally Posted by Z09B4U View Post
Your images prove your brakes locked and you skidded.


Why would not start with better tires that would have more traction and keep the wheels spinning?


How is hydro-boost going to improve things?
You have proved the stock brakes have enough force to lock the wheels.
Better tires? If the brakes are locked even a new tire is going to skid.

hydroboost improves pressure @ all pedal inputs.
I can say after converting my Jeep the improvements are across the board. The brakes just plain work better, even with less pedal input. So you don't need to stand on the pedal, and the vehicle stops better/sooner.
My Jeep weighs about the same as the wagon, and they even use the same brakes. As in I could interchange the front calipers/pads between the two, and they use the same rear shoes.

I'm guessing you've not experienced driving a hydroboosted car/truck? The difference is night/day.
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post #17 of 42 (permalink) Old 06-16-2018, 12:56 PM
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Quote:
I'm guessing you've not experienced driving a hydroboosted car/truck? The difference is night/day.

I used to drive 60000 miles to 90000 miles a year. For several of those years I used a 1980 Olds 98 Diesel with hydro boost. This car shares many parts and characteristics with Caprices. The front disk brakes are the same as a Astro van.



Basic physics, driver training, and racing all know that a rolling tire will stop in a shorter distance. Skidding is a loss of control, you can not steer effectively if any wheel is locked up.


Any properly working braking system that locks a wheel can be improved with a better tire. More brake boost just means you have a better chance to lock up.

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post #18 of 42 (permalink) Old 06-18-2018, 10:01 AM
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Quote:
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.....You have proved the stock brakes have enough force to lock the wheels.
Looks like I won't get a chance to install my Hydro-boost for a few more weeks.

That said, I can lock my brakes....but only with extreme pedal pressure. For right now, my brakes behave exactly like a non-power assist braking system.

If you've ever driven an old Pontiac from the early 1950's.....you know what I mean.

Bottom line; just because you can lock your wheels, doesn't mean you have good brakes.

KW

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1995 DCM SS, LS3, Texas Speed 260cc PRC heads, Lingenfelter GT1-1 cam, V-max 90mm TB, Headman 1 7/8 LT Headers, 2 1/2" cat-back, 3200 Circle-D TC, 3.73 gears -- 493HP/434TQ @ the wheels (Daily Driver)


2014 Chevy SS; Low Lash Solid Roller 429ci LS3 -- 548HP/464TQ @ the wheels....

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post #19 of 42 (permalink) Old 06-18-2018, 10:49 AM
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my '96 Impala that has a big-assed cam and almost zero vacuum For right now, my brakes behave exactly like a non-power assist braking system.
If you've ever driven an old Pontiac from the early 1950's.....you know what I mean.
KW Baraka


I drove a 1980 Dodge van with manual brakes, manual steering, and three on the floor + overdrive. I could not figure out how Dodge could deliver a van that needed around 100 LBS foot pressure to panic stop. I have driven semi-trucks with a hydraulic clutch that needed less clutch force than the Dodge's mechanical clutch.



Your hydro boot application as you describe it is a safety upgrade. Chevy used hydro boost in gas powered tow trucks and delivery trucks for limited space requirements that needed to stop tons of load.



They also used auxiliary electric vacuum pumps to ensure very large vacuum boot systems would work with small engines. I have also seen guys get around this by adding vacuum tanks with check valves.



I find it weird that I have never seen a discussion here about boxy diesel Caprice sedans and wagons. I believe the last of them came off the line in 1986.


There is not much weight difference between a wagon and sedan. The wagon and B4U both have the big drum. I personally have to be careful not to decelerate faster than the guy behind me. I can do this without lock up because I have good tires.


There are many ways to skin a cat but sometimes you just need to clean their paws.

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post #20 of 42 (permalink) Old 06-19-2018, 02:40 PM Thread Starter
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Quote:
Originally Posted by Z09B4U
I can do this without lock up because I have good tires.


There are many ways to skin a cat but sometimes you just need to clean their paws.
It isn't the tires already...good grief.
Hankook Ventus 255/50/17's ~50%, fronts have some edge wear, but tread-wise they're fine.
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