Who uses the Mityvac?
Thread Starter
Pro
Joined: Nov 2000
Posts: 582
Likes: 1
From: Madison Wisconsin
Who uses the Mityvac?
Who has used the Mityvac? Dose it work very well? I called the tech at the brake manufacture and they said to just use the gravity method and then pump with your foot once you have fluid to the calipers. I installed a whole new brake system with new stainless steel lines new master cyl and rebuilt calipers. I :confused:
Thread Starter
Pro
Joined: Nov 2000
Posts: 582
Likes: 1
From: Madison Wisconsin
Re: Who uses the Mityvac? (GDaina)
I thought about getting a pressure bleeder but just did not want to spend the money for a job I only do once every 5 yrs. We used to have one in the gas station I worked at and it sure did make the job easy. But you think that once I get th fluid down to the calipers that I should just use the two person method, someone in the car pumping the pedal and someone at each wheel cracking the bleeder screws?
Race Director
Joined: Feb 1999
Posts: 16,978
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From: In Dreams There Is Truth Ohio
Re: Who uses the Mityvac? (Mad Vette)
no need to buy a pressure bleeder, make your own...just need an extra MC cover, drill hole, put air fitting, seal hole, use mc gasket, clamp down, attach air hose to chuck, open bleed screw, bleed, close bleed screw, check fluid level in MC, fill, repeat cycle.
It works great, I use the least air pressure, think max 5 lbs.
It works great, I use the least air pressure, think max 5 lbs.
Le Mans Master
Joined: Jul 1999
Posts: 9,206
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From: Sewell NJ
Re: Who uses the Mityvac? (Mad Vette)
I've used the Mity Vac but didn't like the results. It seems that the vac not only pulled the fluid but also pulled air in from around the loose bleeder which made it difficult to see when you had fluid with no bubbles in it. Probably putting some pipe sealer around the bleeder would have made it work better but it was easier to tell my wife "Press this pedal when I tell you". :lol:
Race Director
Joined: Mar 2001
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From: Living in the Hartland
Re: Who uses the Mityvac? (Mad Vette)
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From: Semper ubi, sub ubi
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Re: Who uses the Mityvac? (Mad Vette)
MityVac is great for checking for vacuum leaks and operating vacuum devices, but it doesn't work very well on Corvette brakes. Gravity bleed is a good way that doesn't require any special tools. GDiana's pressure method is the fastest and surest way to do the job, by yourself.
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Re: Who uses the Mityvac? (vettfixr)
I've used the Mity Vac but didn't like the results. It seems that the vac not only pulled the fluid but also pulled air in from around the loose bleeder which made it difficult to see when you had fluid with no bubbles in it. Probably putting some pipe sealer around the bleeder would have made it work better but it was easier to tell my wife "Press this pedal when I tell you". :lol:
Melting Slicks
Joined: Apr 1999
Posts: 2,675
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From: Sudbury MA
Re: Who uses the Mityvac? (Mad Vette)
I just replaced the entire brake system on my 68, booster, master cylinder, lines, etc.
Tried to gravity bleed and couldn't get it to start over many days. Finally bought a mighty vac to get the fluid moving and then once it started I let gravity do all 4 wheels. Worked great and as Duke 94 said you can use it for testingother vacuum operated items also. I have heard that mightyvacs can suck the fluid right past the rubbers in the wheel cylinder causing leaks if you use to much vacuum, but I only pumped it up part way to get the fluid started. Don't overdo it.
I have a nice hard pedal now.
I bought it at Sears and it is a nice tool to have. Recently removed and refurbished the HotWater valve in the car and was able to test it before reinstalling, with the Mightyvac.
In my case, it has already paid for itself.
Kurt 68 T top L79 resto
Tried to gravity bleed and couldn't get it to start over many days. Finally bought a mighty vac to get the fluid moving and then once it started I let gravity do all 4 wheels. Worked great and as Duke 94 said you can use it for testingother vacuum operated items also. I have heard that mightyvacs can suck the fluid right past the rubbers in the wheel cylinder causing leaks if you use to much vacuum, but I only pumped it up part way to get the fluid started. Don't overdo it.
I have a nice hard pedal now.
I bought it at Sears and it is a nice tool to have. Recently removed and refurbished the HotWater valve in the car and was able to test it before reinstalling, with the Mightyvac.
In my case, it has already paid for itself.
Kurt 68 T top L79 resto
