2nd Gen General Discussion The place for non-technical discussion about 2nd Gen RX-7s or if there's no better place for your topic

Clutch issues. Need help

Thread Tools
 
Search this Thread
 
Old Dec 19, 2019 | 05:04 AM
  #1  
David Crooky's Avatar
Thread Starter
Junior Member
 
Joined: Oct 2017
Posts: 19
Likes: 0
From: Western Australia
Clutch issues. Need help

Hi guys.

Wouldnt normally post and look through over threads but this one is a strange one.

I have a rx7 fc turbo 1986.
i recentle did a rebuild. New engine works well but clutch wont work. I have done new everything. New master and slave. New braided line. Bleed lots of times. Have had the tranny off twice. New pilot bearing. Adjusted fork and checked bearing but still wont work. The pedal has feel but dosnt engage the clutch. I have the rod fully extended as far as it can go aswell.

Any thoughts. any help would be great.

Reply
Old Dec 19, 2019 | 06:05 AM
  #2  
pfsantos's Avatar
(blank)
iTrader: (1)
 
Joined: Nov 2005
Posts: 2,285
Likes: 15
From: YYZ
Do you mean by any chance the pedal doesn't DISENGAGE the clutch? Any chance the friction plate was installed backwards?

Other questions:
Did you machine the flywheel? If you did, did you take off much, and did you machine the surface where the dowels go?
Did you try using the old master and slave?
Reply
Old Dec 19, 2019 | 06:24 AM
  #3  
David Crooky's Avatar
Thread Starter
Junior Member
 
Joined: Oct 2017
Posts: 19
Likes: 0
From: Western Australia
@pfsantos Tryed using the old slaves but same resault. And havnt touch the fly wheel. Same one i was running before the engine blew. As for the friction plate it sits flush down on the flywheel right.

The clutch pedal has good feel but top end is alittle weak

Last edited by David Crooky; Dec 19, 2019 at 06:55 AM.
Reply
Old Dec 19, 2019 | 11:49 AM
  #4  
j9fd3s's Avatar
Moderator
Community Builder
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Mar 2001
Posts: 31,833
Likes: 3,232
From: https://www2.mazda.com/en/100th/
when you push the clutch, does the slave and fork move? where did you get your parts? are they the correct T2 stuff?
Reply
Old Dec 19, 2019 | 03:19 PM
  #5  
David Crooky's Avatar
Thread Starter
Junior Member
 
Joined: Oct 2017
Posts: 19
Likes: 0
From: Western Australia
@j9fd3s all correct stuff. The slave moves but i would.say only 3/4 of the way out. Its like there is to much pressure to move the clutch. There is.100% no air bubbles in the.system
Reply
Old Dec 20, 2019 | 05:52 AM
  #6  
mazdaverx713b's Avatar
Have RX-7, will restore
Veteran: Army
Tenured Member: 20 Years
Loved
Community Favorite
iTrader: (91)
 
Joined: Oct 2003
Posts: 22,577
Likes: 1,273
From: Ohio
You may have a bad pressure plate. Normally I would think that there is air in the clutch master cylinder. I've had a faulty clutch master right out of the box one time. Bench bled another new one and installed it and all was fine. Is the clutch pedal difficult to depress?
Reply
Old Dec 20, 2019 | 09:26 AM
  #7  
j9fd3s's Avatar
Moderator
Community Builder
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Mar 2001
Posts: 31,833
Likes: 3,232
From: https://www2.mazda.com/en/100th/
i'd suspect a clutch disc that is backwards, or something that isn't correct for the car (wrong parts)
Reply
Old Dec 20, 2019 | 11:01 AM
  #8  
RXSpeed16's Avatar
Theoretical Tinkerer
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (41)
 
Joined: Oct 2003
Posts: 1,600
Likes: 49
From: Norcal/Bay Area, CA
Is the clutch fork pivot bolt intact?
Bent clutch fork
I think the throwout bearing can be installed backwards too
Reply
Old Dec 20, 2019 | 12:31 PM
  #9  
mazdaverx713b's Avatar
Have RX-7, will restore
Veteran: Army
Tenured Member: 20 Years
Loved
Community Favorite
iTrader: (91)
 
Joined: Oct 2003
Posts: 22,577
Likes: 1,273
From: Ohio
The throwout bearing cannot be installed backwards. Bent clutch fork or faulty pivot ball perhaps.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
David Crooky
2nd Gen General Discussion
0
Dec 19, 2019 05:03 AM
johnrx2
2nd Generation Specific (1986-1992)
3
Mar 11, 2018 07:42 AM
dakota's rx7
New Member RX-7 Technical
19
Sep 6, 2012 10:31 AM
7ormore
2nd Generation Specific (1986-1992)
7
Aug 27, 2005 02:26 PM
jfdmas
2nd Generation Specific (1986-1992)
12
Sep 3, 2004 05:40 PM




All times are GMT -5. The time now is 07:44 PM.