WTF am I doing wrong?
Thread Starter
TECH Regular
Joined: Aug 2005
Posts: 455
Likes: 0
99% sure that somehow we ended up blowing the slave. When we first started mity-vac, I didn't explain to my buddy not to bring it past 10-12hg. Turns out, we had gone to 20ish and well...
Pretty sure that's when **** hit the fan
Not knowing this really, I started to bleed the system. I would pump it up to 10hg and it would then the gauge would slowly sink down. Again, after 3 12 oz bottles... still had air.
Tightened up the bleeder and the clutch pedal is DEAD. Pulled it off the ramps and left about 12 oz on the ground. (coming from the bellhousing drain).
These are the stories I see on here that I am laughing at the other schmoes... Now I am the schmoe
Pretty sure that's when **** hit the fan
Not knowing this really, I started to bleed the system. I would pump it up to 10hg and it would then the gauge would slowly sink down. Again, after 3 12 oz bottles... still had air.
Tightened up the bleeder and the clutch pedal is DEAD. Pulled it off the ramps and left about 12 oz on the ground. (coming from the bellhousing drain).
These are the stories I see on here that I am laughing at the other schmoes... Now I am the schmoe
Calm down man, you didn't blow your slave. Please explain how you were doing this, where was the mighty vac, what was attached to the bleeder, and how were you adding the fluid? Also are the slave and master new or did they have fluid in them from before?
Thread Starter
TECH Regular
Joined: Aug 2005
Posts: 455
Likes: 0
It was pumped to 20+ Hg of vacuum and then lost the ability to hold vacuum. This tells me (along with the major leak) that the slave is in fact been torn up. If you can tell me another test short of bleeding it for another 3 hours.. I am down, but still think it's the slave.
When you say your buddy "pumped it through" you are talking about pumping the mightyvac or the clutch pedal? Don't bleed it for another three hours, change your method. What I do is hose from the brake fluid attached to the bleeder valve, then apply vacuum through the clutch reservoir. That way you are using the air's tendency to rise to your advantage so you don't get pockets of trapped air. I've done it this way several times and it has worked perfectly every time. Of course I did this with the slave hanging free before putting the transmission in, but since you cut a hole you should be able to do the same thing.
I've seen the inside of a slave cylinder and that is a big, tough seal. I don't think 20inhg is going to blow it, especially considering the pressures it sees when you press the clutch pedal. I've had 20inhg on my system with no damage.
Also, you should not be able to hold vacuum with your method, the vacuum should bleed off as the fluid is sucked freely into the mityvac.
I've seen the inside of a slave cylinder and that is a big, tough seal. I don't think 20inhg is going to blow it, especially considering the pressures it sees when you press the clutch pedal. I've had 20inhg on my system with no damage.
Also, you should not be able to hold vacuum with your method, the vacuum should bleed off as the fluid is sucked freely into the mityvac.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo Damn, I didn't see earlier that you are leaking fluid too. I guess it could be a blown slave. Here is my experience with a blown slave. https://ls1tech.com/forums/showthread.php?p=2261054 In my case it was cracked so any fluiid added to the reservoir was on the ground in a couple seconds. Is your reservoir holding fluid or does it drop steadily when you add it with the bleeder closed? If you close the bleeder and fill up the reservoir with fluid will it hold a vacuum at the reservoir?
Thread Starter
TECH Regular
Joined: Aug 2005
Posts: 455
Likes: 0
Damn, I didn't see earlier that you are leaking fluid too. I guess it could be a blown slave. Here is my experience with a blown slave. https://ls1tech.com/forums/showthread.php?p=2261054 In my case it was cracked so any fluiid added to the reservoir was on the ground in a couple seconds. Is your reservoir holding fluid or does it drop steadily when you add it with the bleeder closed? If you close the bleeder and fill up the reservoir with fluid will it hold a vacuum at the reservoir?
Gotten to the point now that I can swap one out in a matter of 2 hours without a lift or power tools. Only shitty thing is having to buy a new one.