Manual Transmission T56 | T5 | MN12 | Clutches | Hydraulics | Shifters

First time mityvac user here. Hate to start new thread.

Thread Tools
 
Search this Thread
 
Old Apr 20, 2009 | 09:45 AM
  #1  
bjamick's Avatar
Thread Starter
TECH Veteran
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (31)
 
Joined: May 2006
Posts: 4,218
Likes: 3
From: Birmingham AL.
Default First time mityvac user here. Hate to start new thread.

Ok guys my clutch hydraulics have plagued me ever since my engine was put into my car. It wont go into first easily at all and grinds like nobody's business. I just bought and installed the Tick adjustable MC and still grinding. I was told I still needed to bleed the system. Well I went and rented the mityvac read the instructions as I've never used anything like it before. I put it into place and started squeezing. Never saw any bubbles but as I was squeezing the plastic line leading from the vac to the clutch reservoir collapsed. I wasn't even at 15" of vacuum yet.

This **** is getting on my damn nerves, so some help on how to use this damn thing would be great.
Reply
Old Apr 20, 2009 | 11:22 AM
  #2  
bearcatt's Avatar
TECH Fanatic
iTrader: (41)
 
Joined: Jul 2007
Posts: 1,431
Likes: 0
From: Lancaster California
Default

Here's a link that might be helpful.

http://home.comcast.net/~buschman_00...utchbleed.html


.
Reply
Old Apr 20, 2009 | 12:53 PM
  #3  
bjamick's Avatar
Thread Starter
TECH Veteran
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (31)
 
Joined: May 2006
Posts: 4,218
Likes: 3
From: Birmingham AL.
Default

All my stuff is installed, thats showing how to bench bleed everything. I would've never thought a t56 was this much of a PITA.
Reply
Old Apr 20, 2009 | 01:47 PM
  #4  
bearcatt's Avatar
TECH Fanatic
iTrader: (41)
 
Joined: Jul 2007
Posts: 1,431
Likes: 0
From: Lancaster California
Default

Yep, the hydraulics can be fussy on these cars.

How is your transmission, clutch and slave cylinder ?


.
Reply
Old Apr 20, 2009 | 01:56 PM
  #5  
bjamick's Avatar
Thread Starter
TECH Veteran
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (31)
 
Joined: May 2006
Posts: 4,218
Likes: 3
From: Birmingham AL.
Default

Slave cyl new, MC new, clutch is new trans is rebuilt.
Reply
Old Apr 20, 2009 | 02:27 PM
  #6  
bearcatt's Avatar
TECH Fanatic
iTrader: (41)
 
Joined: Jul 2007
Posts: 1,431
Likes: 0
From: Lancaster California
Default

How does the engagement feel at the peddle ?



.
Reply
Old Apr 20, 2009 | 03:11 PM
  #7  
bjamick's Avatar
Thread Starter
TECH Veteran
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (31)
 
Joined: May 2006
Posts: 4,218
Likes: 3
From: Birmingham AL.
Default

At the top of the pedal I still have some play. The pedal feels stiff like its supposed to it just wont go into first smoothly.
Reply
Old Apr 20, 2009 | 03:40 PM
  #8  
bearcatt's Avatar
TECH Fanatic
iTrader: (41)
 
Joined: Jul 2007
Posts: 1,431
Likes: 0
From: Lancaster California
Default

Only first gear is hard to shift ?
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
Old Apr 20, 2009 | 03:48 PM
  #9  
bjamick's Avatar
Thread Starter
TECH Veteran
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (31)
 
Joined: May 2006
Posts: 4,218
Likes: 3
From: Birmingham AL.
Default

1st and sometime 3rd if i'm in the throttle. Its gotta be air in the slave causint this. I'll try the mityvac again tonight but I'll push the clutch pedal in a few times this time. While its pulling some vacuum.
Reply
Old Apr 20, 2009 | 04:04 PM
  #10  
bearcatt's Avatar
TECH Fanatic
iTrader: (41)
 
Joined: Jul 2007
Posts: 1,431
Likes: 0
From: Lancaster California
Default

I have a Tick m/c as well. Those take so much fluid that you can gravity bleed them. I also have a Mity-vac and never had much luck with it.

Everytime I've installed a new master cylinder, I've bench bled without the Mity-vac. Once I have it bench bled, I just hook it up to the slave pump the peddle a few times and that's it.

After much headache and pulling the tranny out about six times, I found something that works for me.

The best formula seems to be, bench bleed the m/c regardless of what type it is or get a pre-bled GM unit.

Also, why not try lengthing the the m/c rod just a little bit.

Sometimes dirty boiled over fluid reaks havok too.


.
Reply
Old Apr 20, 2009 | 04:07 PM
  #11  
bjamick's Avatar
Thread Starter
TECH Veteran
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (31)
 
Joined: May 2006
Posts: 4,218
Likes: 3
From: Birmingham AL.
Default

Well the fluid thats in it is maybe 5-600miles used. The pedal is about even with the break pedal and it didn't make any difference from where it was to where its at now, which was about an inch.
Reply
Old Apr 20, 2009 | 04:12 PM
  #12  
bearcatt's Avatar
TECH Fanatic
iTrader: (41)
 
Joined: Jul 2007
Posts: 1,431
Likes: 0
From: Lancaster California
Default

What clutch are you running ?

If you've done everything you can do, maybe it's time to contact the company that rebuilt your transmission ?


.
Reply
Old Apr 20, 2009 | 04:44 PM
  #13  
bjamick's Avatar
Thread Starter
TECH Veteran
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (31)
 
Joined: May 2006
Posts: 4,218
Likes: 3
From: Birmingham AL.
Default

I've never bled it right. I always pumped and opened bleeder valve. Now I read about this mity vac and the correct way to bleed the sytem, so I will try both. I have the LS7 clutch kit.
Reply
Old Apr 20, 2009 | 06:35 PM
  #14  
bearcatt's Avatar
TECH Fanatic
iTrader: (41)
 
Joined: Jul 2007
Posts: 1,431
Likes: 0
From: Lancaster California
Default

I just put in a new LS7 clutch kit too. So far so good.

Some say open the bleeder valve and than push or some say push the peddle down and open bleeder. The both work as long as you don't let the peddle back up while the bleeder is open.

I hope you get that beast fixed.


.
Reply




All times are GMT -5. The time now is 05:03 AM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE