Brake bleeding just got much easier.
Burning Brakes
Joined: Oct 2002
Posts: 1,040
Likes: 109
Originally Posted by dath
That makes sense. In that case, what about taking a flat piece of steel and installing an air fitting on it and a flat piece of rubber where it will contact the master cylinder and just using an air compressor pressurize the system? You'd have to add fluid once in a while of course. . . I think I read an article about doing that once . . . Same idea?
glad to see someone using their head.
C6 the C5 of tomorrow
Joined: Nov 2000
Posts: 6,665
Likes: 2
From: Twin Cities Minnesota
Originally Posted by 1971corvette
dath,yes you can do this,save the money and take the wife out for a drive.This is how I bleed mine,all by my self.
glad to see someone using their head.
glad to see someone using their head.
Works great and I don't need intterupt wifies 'chores'
Thread Starter
Race Director
Joined: Jun 2000
Posts: 10,046
Likes: 675
From: FL
Originally Posted by 1971corvette
dath,yes you can do this,save the money and take the wife out for a drive.This is how I bleed mine,all by my self.
glad to see someone using their head.
glad to see someone using their head.
The beauty of the Motive Products bleeder is that it pressurizes the system with clean brake fluid and keeps replenishing the master cylinder. I ran a quart of nice clean fluid through my system with no problems and no stopping except to pump up the pressure occasionally.
Burning Brakes
Joined: Feb 2001
Posts: 929
Likes: 5
From: Marietta GA
I bought the Motive Products bleeder but it leaked all over. It just wouldn't seal the master cylinder. It kept blowing fluid past the rubber seal no matter how tight it was clamped to the master cylinder. I am using Dot 5 silicone so maybe that is why. I eventually gave up and used the two man method (one to pump the pedal and one to bleed at the caliper).
Has anyone had this problem with the Motive Products bleeder and if so, were you able to solve it? I have a '68 so it has the old style metal master cylinders that are kind of oval.
Has anyone had this problem with the Motive Products bleeder and if so, were you able to solve it? I have a '68 so it has the old style metal master cylinders that are kind of oval.
Safety Car
Joined: Jun 2004
Posts: 4,372
Likes: 223
From: Beecher Illinois
Originally Posted by BB68Vett
I bought the Motive Products bleeder but it leaked all over. It just wouldn't seal the master cylinder. It kept blowing fluid past the rubber seal no matter how tight it was clamped to the master cylinder. I am using Dot 5 silicone so maybe that is why. I eventually gave up and used the two man method (one to pump the pedal and one to bleed at the caliper).
Has anyone had this problem with the Motive Products bleeder and if so, were you able to solve it? I have a '68 so it has the old style metal master cylinders that are kind of oval.
Has anyone had this problem with the Motive Products bleeder and if so, were you able to solve it? I have a '68 so it has the old style metal master cylinders that are kind of oval.
2 C clamps, one over each reservoir. Also, don't put any fluid in the unit until you pressure test it first. I hook it up empty and pump it up to 20 pounds and then start removing the wheels. If it holds pressure while I do that then I open it up and put in fluid. Sometimes you need to adjust the clamps. When done bleeding, I turn the tank on its side and open the drivers side front bleeder one more time while watching the air gap in the clear hose. When the gap gets to the master cylinder, bleed a little more then stop. No mess.
Mike
Oh yeah, toss those chains and j bolts in the trash!
I got this one from these guys. http://www.apexperformance.net/cartg...p?pid=47&cid=8
Last edited by KapsSA; Aug 17, 2005 at 07:46 PM.
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Le Mans Master
Joined: Oct 2002
Posts: 5,714
Likes: 6
From: Silver City NM
St. Jude Donor '05-'07
Originally Posted by SteveG75
Well, dropped the $$$ for the Motive Products bleeder. Nice unit.
Ran a quart of fresh fluid through the system. Little air bubbles in the left rear outboard (couple of whacks with the rubber mallet broke them loose). Brakes had felt real good with gravity bleeding but this just a nice tool to have. Besides, got to spend the dollars on something fun.
Almost did the test drive but decided just to drive it work tomorrow. Just getting lazy in my old age.
BTW: Used the CF tip of a 2x4 and C-clamp to hold the reservoir cover on. Worked great.
Ran a quart of fresh fluid through the system. Little air bubbles in the left rear outboard (couple of whacks with the rubber mallet broke them loose). Brakes had felt real good with gravity bleeding but this just a nice tool to have. Besides, got to spend the dollars on something fun.
Almost did the test drive but decided just to drive it work tomorrow. Just getting lazy in my old age.
BTW: Used the CF tip of a 2x4 and C-clamp to hold the reservoir cover on. Worked great.
Now you come out with this
post about how great it is?!?!?!?!?Oh MAN!!!! NO freakin way I am gonna let you slide on this one Stevieboy. Time for you to ease up to the dinner table and order a nice CROW PIZZA!!!!
Dep
Thread Starter
Race Director
Joined: Jun 2000
Posts: 10,046
Likes: 675
From: FL
Originally Posted by DJ Dep
Wait a dang minute!!!!! Aren't you the same SteveG75 that insisted GRAVITY was the ONE AND ONLY way to bleed brakes??? Aren't you the guy that ragged on me on every post where I recommended power bleeding with the Motive unit????
Now you come out with this post about how great it is?!?!?!?!?
Oh MAN!!!! NO freakin way I am gonna let you slide on this one Stevieboy. Time for you to ease up to the dinner table and order a nice CROW PIZZA!!!!
Dep
Now you come out with this
post about how great it is?!?!?!?!?Oh MAN!!!! NO freakin way I am gonna let you slide on this one Stevieboy. Time for you to ease up to the dinner table and order a nice CROW PIZZA!!!!
Dep
Hey Dep,
Are you referring to this exchange:
http://forums.corvetteforum.com/show...ity&forum_id=3
Originally Posted by DJ Dep
Do they gravity bleed the lunar lander??? Note that gravity bleeding will
NOT let you know if you have a weak caliper or brake hose. You might
want to jump into the 21st Century and pick up one of these:
http://www.motiveproducts.com/
Dep
P.S. Bobs77vet wears GRAVITY BOOTS!!
NOT let you know if you have a weak caliper or brake hose. You might
want to jump into the 21st Century and pick up one of these:
http://www.motiveproducts.com/
Dep
P.S. Bobs77vet wears GRAVITY BOOTS!!
Originally Posted by SteveG75
Check the Motive Prroducts Instructions. 10 PSI is what they recommend. All you are doing is forcing fluid through. You WILL NOT find a weak hose or caliper with 10 PSI.
After all brake systems run in the 100's if not 1000's of PSI level. Heck air pressure is 14.7 PSI at sea level.
After all brake systems run in the 100's if not 1000's of PSI level. Heck air pressure is 14.7 PSI at sea level.
Originally Posted by DJ Dep
And I will counter that with another
I found two bad calipers by using the Motive bleeder. This mirrors the experiences of MANY others who have used the pressure bleeder.
Sorry....practical results destroy your "theory".
Dep
I found two bad calipers by using the Motive bleeder. This mirrors the experiences of MANY others who have used the pressure bleeder.
Sorry....practical results destroy your "theory".
Dep
Originally Posted by SteveG75
Then those were pretty bad calipers. Here is a question for you. Did they leak under gravity bleeding? Did you even try gravity bleeding? If you only do it one way that is not evidence of the fact that your method is the only way to find a leak.
If you did, my bad. I'll just apologize now.
If you did, my bad. I'll just apologize now.
I don't eat pizza but I will have a steak if it is delivered to my house. Of course, you need a car that runs in order to deliver stuff. Ever decide what you are building or how to do it?
Thread Starter
Race Director
Joined: Jun 2000
Posts: 10,046
Likes: 675
From: FL
Originally Posted by DJ Dep
Steve:You can twist and turn in the wind, but you AIN'T gonna change what's been posted. So how much did you sell the Gravity Boots for?
Dep
Dep
Did you even bother to go back and read the thread. Your gravity boots comment was to someone else. If you can post to a link where I said it was the ONE AND ONLY WAY, then I'll eat crow, till then..
BTW, why are using a power bleeder? That is new technology. GM didn't use it in 1969 so there is no reason to use it today.
Come back and talk when your car is running and you need brakes.
Last edited by SteveG75; Aug 18, 2005 at 09:51 AM.
Pro
Joined: Nov 2004
Posts: 585
Likes: 0
From: Royal Oak MI
I had trouble sealing my cover to the master as well, I used the C clamp and pumped it up. It still leaked a little pressure out the top, but it maintained from 20-15 lbs for about 10min so I went ahead and blead them and it still worked great.
I think I will not use the chains next time and only use 2 C clamps, but it worked great even thoughit was leaking a little.
I think I will not use the chains next time and only use 2 C clamps, but it worked great even thoughit was leaking a little.
Le Mans Master
Joined: Oct 2002
Posts: 5,714
Likes: 6
From: Silver City NM
St. Jude Donor '05-'07
Originally Posted by SteveG75
Dep,
Did you even bother to go back and read the thread. Your gravity boots comment was to someone else. If you can post to a link where I said it was the ONE AND ONLY WAY, then I'll eat crow, till then..
BTW, why are using a power bleeder? That is new technology. GM didn't use it in 1969 so there is no reason to use it today.
Come back and talk when your car is running and you need brakes.
Did you even bother to go back and read the thread. Your gravity boots comment was to someone else. If you can post to a link where I said it was the ONE AND ONLY WAY, then I'll eat crow, till then..
BTW, why are using a power bleeder? That is new technology. GM didn't use it in 1969 so there is no reason to use it today.
Come back and talk when your car is running and you need brakes.
I use the pressure bleeder because I have no "assisstant" to "pump it up".
Dep
Burning Brakes
Joined: Feb 2001
Posts: 929
Likes: 5
From: Marietta GA
But didn't GM have a "special tool" to bleed the brakes, which was a pressure bleeder. I think it is listed in the Service Manual and it was shaped like the top of the master cylinder. You probably can't buy them new any more but I don't really think this is new technology just technology to the masses. Besides, the power bleeder from Motive Products allows a fresh supply of brake fluid so you don't pressure bleed it dry and then you have to start all over again.
Le Mans Master
Joined: Oct 2002
Posts: 5,714
Likes: 6
From: Silver City NM
St. Jude Donor '05-'07
Garages have had pressure bleeders since at least the 70s. Maybe before that time. But most mechanics just asked someone nearby to "pump it up". More convenient since they had help readily available.
Plus the brake pumper could take a quick smoke break in the car
Dep
Plus the brake pumper could take a quick smoke break in the car
Dep
Last edited by DJ Dep; Aug 19, 2005 at 09:07 AM.
I just hope you cleaned out the Roundup first