Pressurized brake bleeder mods
Thread Starter
Pro
Joined: Nov 2005
Posts: 609
Likes: 0
From: Ontario
Pressurized brake bleeder mods
I just finished building this new master cylinder adapter for my pressurized brake bleeder.
I haven't put it to use in an actual bleed, but I have dry fitted it and it definitely does not leak. The only down side I see so far is that I have to remove the check valve fitting on the vacuum booster to get it to fit, but it just plugs in so that's not too bad.
What do you think?
Dave
I haven't put it to use in an actual bleed, but I have dry fitted it and it definitely does not leak. The only down side I see so far is that I have to remove the check valve fitting on the vacuum booster to get it to fit, but it just plugs in so that's not too bad.
What do you think?
Dave
Pro
Joined: Oct 2005
Posts: 541
Likes: 1
From: Freeport FL
I think its clear that you have entirely too much free time 
But it is very nice. Got some good skills there. Why not just notch it for the check valve, or better yet, change to a hydro-boost?
Whats with those odd looking nuts? They look open on one side.
But it is very nice. Got some good skills there. Why not just notch it for the check valve, or better yet, change to a hydro-boost?
Whats with those odd looking nuts? They look open on one side.
Last edited by Droshki; Feb 28, 2009 at 02:23 PM.
Le Mans Master
Joined: Apr 2001
Posts: 5,000
Likes: 1
From: Minneapolis, Mn USA
Looks pretty severe. You have entirely too much time on your hands!!
Next step you could take is to dip the U-bolts into conformal coating, the kind that you use to coat some tools -like a chisel shaft or screwdriver shaft. That will keep the paint on your MC from scratching.
Then, I agree with above, when you done with that, convert over to Hydraboost.
Next step you could take is to dip the U-bolts into conformal coating, the kind that you use to coat some tools -like a chisel shaft or screwdriver shaft. That will keep the paint on your MC from scratching.
Then, I agree with above, when you done with that, convert over to Hydraboost.
Thread Starter
Pro
Joined: Nov 2005
Posts: 609
Likes: 0
From: Ontario
Those "odd looking nuts" are a type of quick opening nut, so that I don't need to thread them down the entire length of the u-bolt.
Thanks for your compliments.
Dave
Thread Starter
Pro
Joined: Nov 2005
Posts: 609
Likes: 0
From: Ontario
Thread Starter
Pro
Joined: Nov 2005
Posts: 609
Likes: 0
From: Ontario
Looks pretty severe. You have entirely too much time on your hands!!
Next step you could take is to dip the U-bolts into conformal coating, the kind that you use to coat some tools -like a chisel shaft or screwdriver shaft. That will keep the paint on your MC from scratching.
Then, I agree with above, when you done with that, convert over to Hydraboost.
Next step you could take is to dip the U-bolts into conformal coating, the kind that you use to coat some tools -like a chisel shaft or screwdriver shaft. That will keep the paint on your MC from scratching.
Then, I agree with above, when you done with that, convert over to Hydraboost.
That may be the next upgrade. When I have time.
Dave
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Instructor
Joined: Jan 2007
Posts: 233
Likes: 41
From: Simpsonville SC
Dang, yours looks nicer than mine 
http://picasaweb.google.com/lh/photo...eat=directlink
http://picasaweb.google.com/lh/photo...eat=directlink
http://picasaweb.google.com/lh/photo...eat=directlink
http://picasaweb.google.com/lh/photo...eat=directlink
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,852
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
I have the Ammco commercial bleeder and even it has problems. The cheesy chains stretch out on you and always at the wrong time. Combine this with the generic rubber seal that is way to thin and wears out way to quick and you can have a mess. The Ammco is so bad at leaking that before we install it we put a piece of plastic down on the column and then a towel every time.
There is nothing better than using a pressure bleeder, but they are a pain everytime they are used.
I’ve been trying to think of a better mouse trap for it that would be more dependable and by gosh I think he’s got it. Nice job!
Willcox
Melting Slicks
Joined: May 2005
Posts: 2,209
Likes: 12
From: Montgomery Alabama
Cruise-In VII Veteran
St. Jude Donor '06
Being an engineer, I understand the need to over-design everything, but why don't you just tap an old master cylinder cover? Does it leak when pressurized?
Pro
Joined: Jul 2004
Posts: 605
Likes: 0
From: Alta Loma CA
http://forums.corvetteforum.com/c3-t...r-adaptor.html
This link shows mine very simple to build. Yours is much better looking than mine is.
This link shows mine very simple to build. Yours is much better looking than mine is.
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,852
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
For us this is not an option since we use this on the 63-67 cars (which have six different master cylinders) and we use it for the 58-62 cars.
We need a nice firm thick plate like pictured with a good flat gasket that can adapt to different cylinders.
The cap design would work great for the 67-82 cars, but another plate would also need to be made for the single res. cars. I guess this may explain the chain system supplied with the Ammco bleeder.
Willcox
Last edited by Willcox Corvette; Mar 1, 2009 at 12:11 AM.
Race Director
Joined: Mar 2006
Posts: 14,112
Likes: 28
From: Florida
Tried that,
The gasket sucks, needs to be thicker, wider.
The one I made even had tubes down into the reservoir to lower the fluid level before disconnecting in an effort to reduce any mess.
Worked great first few times and as long as it wasn’t pressurized for more than 5 minutes. Cleaning that mess wasn’t worth it.
Ended up making 1 similar to above out of ½” alum with only 1 coupler and a slot milled between the 2 cavities. Use a large vicegrip clamp. No leaks and fast and easy.
Still in search of a better gasket material.
I do like the idea! CHVET73 had a good idea too but I'm not sure this would be good for over used equipment.
For us this is not an option since we use this on the 63-67 cars (which have six different master cylinders) and we use it for the 58-62 cars.
We need a nice firm thick plate like pictured with a good flat gasket that can adapt to different cylinders.
The cap design would work great for the 67-82 cars, but another plate would also need to be made for the single res. cars. I guess this may explain the chain system supplied with the Ammco bleeder.
Willcox
For us this is not an option since we use this on the 63-67 cars (which have six different master cylinders) and we use it for the 58-62 cars.
We need a nice firm thick plate like pictured with a good flat gasket that can adapt to different cylinders.
The cap design would work great for the 67-82 cars, but another plate would also need to be made for the single res. cars. I guess this may explain the chain system supplied with the Ammco bleeder.
Willcox
When getting to the bleeding part of brakes, it should be the part you really look forward to, since all the PITA work is over, and you want to reward your good work by having perfect brakes and not dread it because it is a whole new PITA.
Stupidly, I got rid of an Ammco bleeder years ago for next to nothing, didn't realize how expensive they were.
Here are some "over the top adapters" and their chains DO work but a little pricey.
These will work on all older domestics.
The Power Probe has my vote for being one of the best tool in decades.
http://www.powerprobe.com/powerprobe/Home.html
Best prices I found when I got mine was eBay.
Drifting
Joined: May 2005
Posts: 1,629
Likes: 4
From: Somers CT
If you fill the master cyl. with fluid then use the Motion device JUST for pressure you won't have to worry about it leaking fluid because the hoses will just have air in them. That's the way I've done it after mine leaked the first time I put fluid in the container. It's much easier to remove later too, you aren't spilling fluid all over from the hoses. You just have to monitor how much fluid you're pushing thru so you don't run it dry, that's the only drawback. I generally bleed them by gravity for a while so when it comes time to install the Motive device there isn't much left to bleed. But you guys have made some good looking stuff.
Le Mans Master
Joined: Apr 2001
Posts: 5,000
Likes: 1
From: Minneapolis, Mn USA
Agree with Topgunn, only use the device for pressure and dont use it for fluid.
Just top off the MC after each bleed location and you'll never have to worry about the MC running dry and never have to worry about brake fluid leaking all over your car.
Just top off the MC after each bleed location and you'll never have to worry about the MC running dry and never have to worry about brake fluid leaking all over your car.