Is vacuum brake bleeding with something like a mityvac useful for a road racing application? Seems like it might be easier than two people doing the "up! down! up! down!" thing

 

From my experience, they work great for one man track side brake bleeding. You just need to make sure the fitting is tight around the bleeder screw nipple as to not allow any air back in.

 

i went and finally bought myself a Phoenix Injector pressure bleeder. it is freakin amazing, you can pre-bleed the master cylinder, bleed from the bottom-up, bleed ABS systems with ease... its now a one man operation every time.

check one out, see if your Snap-On man or equivilant has one. you will love yourself for it

 

I gave up on all those tools and replaced the bleeders with Speed Bleeder's. The are simple inexpensive and can be truly a one man operation.

 

I just plain don't like vacuum bleeding. It is always hard to tell if there is air in the lines still because air leaks in from the threads of the bleeder screw.

Anyone have a cure for that? Grease around the bleeder?

 

T00b + bottle = one man bleed. Crack the bleeder and pump.

 

i had them.. I didnt think I got as good of a bleed as a pressure feed bleed system!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jisu009 &raquo;</TD></TR><TR><TD CLASS="quote">I just plain don't like vacuum bleeding. It is always hard to tell if there is air in the lines still because air leaks in from the threads of the bleeder screw.

Anyone have a cure for that? Grease around the bleeder?</TD></TR></TABLE>

This is funny cuz you're using MY vacuum bleeder that works GREAT for me!... Yes you do need to use grease where the fitting attatches to the bleeder nipple. You also don't want to open the bleeder too far. As you're bleeding you may see some bubbles in the vacuum tube but since IT IS A VACUUM no air is getting into your brake lines.

Jeremy, if you need help operating my tools just let me know

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tom Blaney &raquo;</TD></TR><TR><TD CLASS="quote">I gave up on all those tools and replaced the bleeders with Speed Bleeder's. The are simple inexpensive and can be truly a one man operation.

</TD></TR></TABLE>


What are Speed Bleeders? Is that like a vacume bleeder.....?

 

http://www.speedbleeder.com

 

I had one of those things for a while and threw it away. It never worked right.

Now, when I can get it to seal correctly (which is NOT always), my Motive power bleeder owns. http://www.motiveproducts.com. Put it on, pump it up, go around to each screw and open. When the fluid runs clear, smile - you're done.

 

I have the one man vacuum bleeder from Griot's and it works great. Never had a problem with it or with a mushy pedal after using it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by krshultz &raquo;</TD></TR><TR><TD CLASS="quote">I had one of those things for a while and threw it away. It never worked right.

Now, when I can get it to seal correctly (which is NOT always), my Motive power bleeder owns. http://www.motiveproducts.com. Put it on, pump it up, go around to each screw and open. When the fluid runs clear, smile - you're done.</TD></TR></TABLE>

hey we have one of these kicking around the shop, how the heck do I get it to fit onto my crx master cylinder?

 

I bought a mityvac and could never get it to seal tightly around the nipple of the bleed screw and air would get back in the lines. With speedbleeders, I always get a good bleed.

 

I've used a modified Motive bleeder with good results.

In fact, here's a chance to pimp my 2 year old thread on the subject. https://honda-tech.com/zerothread?id=207203

I always had a psychological issue with using a vacuum bleeder. I'd rather have the system under slight pressure when I closed the bleed screws, than under a vacuum. A vacuum would seem counter-productive. Of course, I realize it doesn't work that way, but it was a mental thing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fidracer &raquo;</TD></TR><TR><TD CLASS="quote">I have the one man vacuum bleeder from Griot's and it works great. Never had a problem with it or with a mushy pedal after using it. </TD></TR></TABLE>

this is what I have and it's high quality. I have heard only bad things about the cheap'o's from schucks and napa and whatnot.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Floyd &raquo;</TD></TR><TR><TD CLASS="quote">I've used a modified Motive bleeder with good results.

In fact, here's a chance to pimp my 2 year old thread on the subject. https://honda-tech.com/zerothread?id=207203

I always had a psychological issue with using a vacuum bleeder. I'd rather have the system under slight pressure when I closed the bleed screws, than under a vacuum. A vacuum would seem counter-productive. Of course, I realize it doesn't work that way, but it was a mental thing. </TD></TR></TABLE>

very interesting! would it be possible to clamp the thing onto the resevoir using a c-clamp, maybe? I'm going to look into this further, tonight

 

I fiddled with the Motive unit tried all kinds of mods to the top plate, thought I had the solution with a sheet of rubber as a seal, but I started to use the speed bleeder and found that it was just as easy to fill the reseviour with fresh fluid and crack the bleeder and pump away

 

Hmmm, I've heard bad things about high pressure bleeding as the pressure can force tiny air bubbles into the brake fluid. Think I'll just use my buddy.

 

i've used the mityvac bleeder, which worked really well except the actualy bleeder started to get all fouled up and wouldnt release pressure when i let go of the handle. other than that, its worked well for me.

 

Floyd you own. I was just looking for that for tonight's bleed.

Right Click, add to favorites...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chris Sawatsky &raquo;</TD></TR><TR><TD CLASS="quote">Is vacuum brake bleeding with something like a mityvac useful for a road racing application? Seems like it might be easier than two people doing the "up! down! up! down!" thing</TD></TR></TABLE>

absolutely horrible. air gets thru the threads when you try to suck the fluid, and so you never even know when youve fully bled the system, nor if the air youre sucking thru the screw isnt recontaminating the fluid when you release the pump. speaking of squeezing and releasing, you pump so many times you get blisters on your hands. definately not a better way to bleed than the normal 2 man system.

id figure out how to "gravity" bleed. ive tried, but didnt get much good results myself, but ive heard repeatedly from professional service ppl its the way to go.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Maengelito &raquo;</TD></TR><TR><TD CLASS="quote">i've used the mityvac bleeder, which worked really well except the actualy bleeder started to get all fouled up and wouldnt release pressure when i let go of the handle. other than that, its worked well for me.</TD></TR></TABLE>

I've got one of those. It's far from perfect though... I have the pump the crap out of it to bleed each caliper, and by the time I'm done with the car, my arms are sore and I have blisters on my hands. Not to mention that the pump isn't the best quality... it occasionally comes apart on me, and sometimes brake fluid will splash up into the pump's pickup hole, which causes it to create a mess and a mist of brake fluid. It turns into a brake fluid cannon if you don't have that little vent cover on there. It works, but it's a pain in the *** for me. BTW, I seem to get best results when I pump the brake pedal before doing each corner.

I'm thinking I'll give Speed Bleeders a try...

 

Nothing beats a friend's help... those kits are not quite generally at least for cheap ones. Weston you can always call me

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyson &raquo;</TD></TR><TR><TD CLASS="quote">

absolutely horrible. air gets thru the threads when you try to suck the fluid, and so you never even know when youve fully bled the system, nor if the air youre sucking thru the screw isnt recontaminating the fluid when you release the pump. speaking of squeezing and releasing, you pump so many times you get blisters on your hands. definately not a better way to bleed than the normal 2 man system.
.</TD></TR></TABLE>

Huh???????

You just suck out the fluid. A good vaccum bleeder is not hand operated but uses compressed air to run. Any bubbles you see is just air being pulled past the nipple. I never worry about it. And you will not find anybody more **** than me about air in the lines.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyson &raquo;</TD></TR><TR><TD CLASS="quote">
id figure out how to "gravity" bleed. ive tried, but didnt get much good results myself, but ive heard repeatedly from professional service ppl its the way to go.</TD></TR></TABLE>

Not much to figure out. You open all the bleeder screws and let the fluid run out. Before the master runs empty, close the bleeder screws and top up the resevoir. Don't really doing it this way myself. It will not pull the fluid fast enough to draw bubbles out of the system.