Results 1 to 15 of 15

LS7 clutch problem.....

This is a discussion on LS7 clutch problem..... within the Manual Transmission forums, part of the Drivetrain category; I need help. it's been going on for months now.... I have a 02 LS1 with T-56 tranny. I installed ...

  1. #1
    Junior Member
    Join Date
    Jan 2008
    Location
    SoCal
    Posts
    27

    red
    1997 Nissan with 02 LS1

    LS7 clutch problem.....

    I need help. it's been going on for months now.... I have a 02 LS1 with T-56 tranny. I installed a brand new LS7 clutch with LS2 flywheel setup about 6 months ago. at the same time, i installed new slave cylinder, bearing etc. I have a willwood master cylinder(LS1 engine is in my nissan 240sx).

    and now for the problem: every morning, when i start the car the clutch pedal feels very light. as i keep driving down the street, the clutch pedal slowly starts to sink to the bottom of the floor. i can shift the gear however the clutch bites really close to the floor(normally about half way). as i keep pumping the pedal, the clutch eventually comes back to normal feel(about 10-15 minutes). after that, the problem no longer occurs until the next morning. it seems like if i keep the car turned off for over 12 hours it happens.

    I read bout LS7 clutch users having similar problems..... is there any fix to this problem? My buddy said the clutch must be bad.......but it is brand new.

    please help me!!! thanks

  2. #2
    Senior Member Tyler_LS1's Avatar
    Join Date
    Sep 2006
    Location
    Canby, Oregon
    Age
    29
    Posts
    2,121

    Pewter
    1999 Camaro SS-M6 #1775

    Mine sorta does the same thing but not quite as bad, I think its normal though. ive ran it hard and it still works great
    1999 Camaro SS/ Pewter/ #1775 - LS1 6-speed - Predator 3 Custom Tune - Pro 5.0 - LS7 Clutch - 3.90's - Koni's - Strano Springs and Sway Bars - SFC's - Full UMI Chassis and Suspension - LS6 Intake PnP TB - ARH LT's and Kitty Ran Away - Magnaflow.

    12.6 at 112

    http://www.fquick.com/Tyler_LS1

  3. #3
    Member Justin93's Avatar
    Join Date
    Oct 2007
    Location
    CANFIELD, OHIO
    Age
    31
    Posts
    654

    PEWETER METALIC
    2002 CAMARO Z-28 M-6

    Mine does the same exact thing! I bled the hell out of it but it still feels like crap!

  4. #4
    Senior Member Bottesini's Avatar
    Join Date
    Sep 2007
    Location
    Denton, Texas soon Lafayette, Louisiana
    Posts
    2,955

    Blue
    2002 Z28 Camaro M6

    Sounds like the hydrolics are starting to act up. Most likely the master of slave. Is the clutch slipping as well ?

  5. #5
    Junior Member
    Join Date
    Jan 2008
    Location
    SoCal
    Posts
    27

    red
    1997 Nissan with 02 LS1

    Quote Originally Posted by Bottesini View Post
    Sounds like the hydrolics are starting to act up. Most likely the master of slave. Is the clutch slipping as well ?
    it feels like it's slipping. when i dump the clutch after i shift, it don't jerk at all.....it just feels like normal driving.

    can the master or slave go bad in less than 6 months?

  6. #6
    Junior Member
    Join Date
    Jan 2008
    Location
    SoCal
    Posts
    27

    red
    1997 Nissan with 02 LS1

    Quote Originally Posted by Tyler_LS1 View Post
    Mine sorta does the same thing but not quite as bad, I think its normal though. ive ran it hard and it still works great
    are you saying it's normal on ls7 clutch? or normal on t-56 clutch setup? my buddy have a stock ls1 clutch on his t-56 and it never do this. i think there are something wrong with this.

  7. #7
    Junior Member
    Join Date
    Jan 2008
    Location
    SoCal
    Posts
    27

    red
    1997 Nissan with 02 LS1

    Quote Originally Posted by Justin93 View Post
    Mine does the same exact thing! I bled the hell out of it but it still feels like crap!
    did you do anything else to eliminate this problem? i heard that the ls7 clutch needs to be adjusted prior to installation.... something about the screw on the clutch needs to be turned counter clockwise...... i have never heard of this but could this be true?

  8. #8
    Senior Member Tyler_LS1's Avatar
    Join Date
    Sep 2006
    Location
    Canby, Oregon
    Age
    29
    Posts
    2,121

    Pewter
    1999 Camaro SS-M6 #1775

    well mines not that bad, it grabs a little harder when its cold, but when you warm it up it works great. ive made 18 passes in one night a the strip and it held up great the whole time, no fading at all

  9. #9
    Senior Member Tyler_LS1's Avatar
    Join Date
    Sep 2006
    Location
    Canby, Oregon
    Age
    29
    Posts
    2,121

    Pewter
    1999 Camaro SS-M6 #1775

    BTW i installed it with new slave, master and throw out bearing, whole new assembly

  10. #10
    Member Justin93's Avatar
    Join Date
    Oct 2007
    Location
    CANFIELD, OHIO
    Age
    31
    Posts
    654

    PEWETER METALIC
    2002 CAMARO Z-28 M-6

    Quote Originally Posted by nmssr08 View Post
    did you do anything else to eliminate this problem? i heard that the ls7 clutch needs to be adjusted prior to installation.... something about the screw on the clutch needs to be turned counter clockwise...... i have never heard of this but could this be true?
    no I haven't, Its weird as it goes away after the car is warm, I also can shift into every gear no sweat at high rpms. I replaced my master and my slave when I did the clutch, Im just gonna live with it.

  11. #11
    Member Justin93's Avatar
    Join Date
    Oct 2007
    Location
    CANFIELD, OHIO
    Age
    31
    Posts
    654

    PEWETER METALIC
    2002 CAMARO Z-28 M-6

    Looky what i found at one of my suppliers sites apparently the clutch does need adjusted!!!!!

    http://paceperformance.com/paceperfo...6ClutchAdj.pdf

  12. #12
    Member
    Join Date
    Mar 2007
    Location
    Gainesville, VA
    Posts
    654
    A falling clutch pedal is hydraulic related either the master cylinder, slave or lines. It is not normal for the pedal to fall regardless of the type of clutch you have.

  13. #13
    Junior Member
    Join Date
    Jan 2008
    Location
    SoCal
    Posts
    27

    red
    1997 Nissan with 02 LS1

    Quote Originally Posted by rc74racer View Post
    A falling clutch pedal is hydraulic related either the master cylinder, slave or lines. It is not normal for the pedal to fall regardless of the type of clutch you have.
    that is what I thought. but I have all new parts. lines, master, slave, throwout bearing, clutch. it seems like my fluid is very dirty. but i have changed this about 6 months ago and it's already dirty. is this mean i have a problem with my hydraulic system?

  14. #14
    Junior Member
    Join Date
    Jan 2008
    Location
    SoCal
    Posts
    27

    red
    1997 Nissan with 02 LS1

    Quote Originally Posted by Justin93 View Post
    Looky what i found at one of my suppliers sites apparently the clutch does need adjusted!!!!!

    http://paceperformance.com/paceperfo...6ClutchAdj.pdf
    thanks for the info. i'll try this and see if it stops the dead pedal problem.

  15. #15
    Member
    Join Date
    Mar 2007
    Location
    Gainesville, VA
    Posts
    654
    Quote Originally Posted by nmssr08 View Post
    that is what I thought. but I have all new parts. lines, master, slave, throwout bearing, clutch. it seems like my fluid is very dirty. but i have changed this about 6 months ago and it's already dirty. is this mean i have a problem with my hydraulic system?
    The fluid gets dirty pretty quick. I had the same problem with the pedal and it was my master cylinder. I also did the drill mod to an 02 master cylinder and that seems to have solved my problem now for more then a year. I didn't know willwood made clutch cylinders. I"ve heard the aftermarket ones are not so great but no experience with them personally.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. another clutch problem
    By ali pontiac in forum Manual Transmission
    Replies: 2
    Last Post: 09-29-2010, 03:43 AM
  2. Clutch problem
    By 77k5 in forum Drivetrain
    Replies: 1
    Last Post: 05-02-2009, 10:09 PM
  3. Clutch Problem
    By Blackout01 in forum Manual Transmission
    Replies: 2
    Last Post: 08-07-2007, 03:48 PM
  4. is it a clutch problem, or a tranny problem?
    By sgt0704 in forum Manual Transmission
    Replies: 3
    Last Post: 01-07-2007, 05:03 PM
  5. Clutch problem..help please
    By Scorch in forum Manual Transmission
    Replies: 16
    Last Post: 03-02-2006, 10:34 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •