Transmissions and Drivetrain Need help with your trans? Problems with your axle?

T-56 Hydrolics and pedal feel quick Q (I hope quick)

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Old Aug 7, 2006 | 10:42 AM
  #1  
dennisbernal91z's Avatar
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From: West Warwick RI, postal code: 02893
Car: Building LS3, T56 Z28
Engine: LS3
Transmission: T-56
Axle/Gears: Moser/ 4.11
T-56 Hydrolics and pedal feel quick Q (I hope quick)

Ok so I have done a whole bunch of stuff to my car and after 3 years it is finally getting close to being done. I have a small list of questions about my T-56, some stupid and some ok...

1: I can sit in the car and shift it without having the clutch depressed, how come?

2: How tight do you tighten the bolts holding the hydroilc plunger to the belhousing? ( I have the spacer)

3: The car has never been driven and never really been tunred on or put into gear, how can I make sure the lutch fork is grabing the throw out bearing and disengaging the clutch?

4: I have a spec stage 3 clutch (motor puts out about 500HP) is it supposed to be VERY hard to press the pedal down?

5: how is pedal pressure adjusted ( i know different clutches have different feel) but what I really want to know is what determines the pedal feel?

6: ANY GOOD WAY TO TEST IT ALL BEFORE I PUT THE CAR ON THE GROUND AND GET IT FIRED UP???????????


Thanks for any help.

-Dennis

T-56 guys, please chime in.
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Old Aug 7, 2006 | 10:47 AM
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1. If the engine is not running and the rear is up off the ground, then yes it's quite normal to be able to shift gears at will.

2. Torque goes with the hardware size. IIRC those are about 8mm nuts, and should therefore be tightened to about a typical 8mm torque. A good torque would be around 20-25 ft-lbs.

3. By the pedal pressure. No pressure = no grab; pressure = grab.

4. Depends on who's talking about "very". That's a relatively stiff clutch, so I'd expect it to be noticeably heavier under foot than a stock clutch.

5. It's not. It just is what it is.

6. Put the car in gear and push the clutch, and have someone attempt to turn the rear tires. They should turn (might be a bit stiff). Let the clutch out with it in gear; they should not turn. That's about all you can really do.
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Old Aug 7, 2006 | 12:40 PM
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From: West Warwick RI, postal code: 02893
Car: Building LS3, T56 Z28
Engine: LS3
Transmission: T-56
Axle/Gears: Moser/ 4.11
wow, thanks sofakingdom. You have been a big help. I will go check out all the stuff you said. I am pretty sure it is all OK, but at least now I have a bit of a check list.
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Old Aug 7, 2006 | 01:08 PM
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From: Milwaukee, Wisconsin
Car: 87 Iroc Z28
Engine: 355 TPI
Transmission: T56
Originally Posted by dennisbernal91z
2: How tight do you tighten the bolts holding the hydroilc plunger to the belhousing? ( I have the spacer)
What spacer? all I remeber is the aluminum cover thing and the plunger part on mine?

Also I found the hard way that its important to bleed the clutch the right way. You have to hold that plunger pushed in and then put the resevoir cap back on. other wise you will have to much presure on the fork when your foots not on the pedal.
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Old Aug 7, 2006 | 01:31 PM
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dennisbernal91z's Avatar
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Engine: LS3
Transmission: T-56
Axle/Gears: Moser/ 4.11
The aluminum cover thing is what I was calling the spacer...


How did you hold the plunger in and put the cap back on? can you elaborate for me. I assume you need two people, right? Also was it allready all installed in the car, or are you holding the plunger out of the car with something?

I am a bit lost and would really like to know the best way to do this.
Thanks

-Dennis
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Old Aug 7, 2006 | 02:46 PM
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Doesn't matter, it will adjust itself within a couple of pushes of the clutch. The whole hydraulic mechanism self-adjusts very effectively.
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Old Aug 7, 2006 | 03:07 PM
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dennisbernal91z's Avatar
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From: West Warwick RI, postal code: 02893
Car: Building LS3, T56 Z28
Engine: LS3
Transmission: T-56
Axle/Gears: Moser/ 4.11
ok, I guess I will not worrry about it for now then....

God damn, now that my car is getting close to completion, I am getting all nervouse that I missed something.. hehe...
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Old Aug 8, 2006 | 07:09 AM
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From: Milwaukee, Wisconsin
Car: 87 Iroc Z28
Engine: 355 TPI
Transmission: T56
Originally Posted by dennisbernal91z
The aluminum cover thing is what I was calling the spacer...


How did you hold the plunger in and put the cap back on? can you elaborate for me. I assume you need two people, right? Also was it allready all installed in the car, or are you holding the plunger out of the car with something?

I am a bit lost and would really like to know the best way to do this.
Thanks

-Dennis
Oh ok, just making sure there wasnt some spacer that I was missing.

The easiest way is to do it with 2 people. you take the plunger off the tranny, and have someone up top take off the res cover. then pump the plunger in and out a few times while the guy up top makes sure the res doesnt go empty and to tell you when there are less bubbles coming out. Once most of the bubbles are gone you push the plunger in all the way and hold it there. then have the other guy screw the cap back on the res. Install the plunger back into the tranny and now you have a properly bled clutch. If you dont do it that way you will still have a little pressure on the clutch fork when you put it in and thats a enough to make it slip, essecialy if you have a stock clutch that doesnt have a super heavy pressure plate.

It is possible to do this by your self you just have to make something to hold the plunger in while you slide out and put the cap on.
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Old Aug 8, 2006 | 08:09 AM
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dennisbernal91z's Avatar
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From: West Warwick RI, postal code: 02893
Car: Building LS3, T56 Z28
Engine: LS3
Transmission: T-56
Axle/Gears: Moser/ 4.11
thanks for the walk through. I have a very heavy thick aftermarket pressure plate. I will blead it to see if it makes the pedal feel better. Thanks again.
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