New Member RX-7 Technical Post your first technical questions here, in an easy flame free environment, before jumping into the main technical sections.

performance clutch question

Thread Tools
 
Search this Thread
 
Old Dec 23, 2008 | 07:53 AM
  #1  
Jonathan12uiz's Avatar
Thread Starter
Junior Member
Tenured Member 05 Years
 
Joined: Aug 2008
Posts: 30
Likes: 0
From: Columbus, GA
Question performance clutch question

I purchased an 87 turbo II, hasn't been moving since i bought it. Something wasn't right with the clutch. Found that the master and slave cylinders were sckrewed, so I replaced those. After that, it got like half a pedal. It didn't feel right at all, half of the clutch pedal travel was free play and about the last 1/4 till the floor felt like a crap pedal.

I decided to pull the trans to see if the clutch disk was rusted to the pressure plate, which it was... but here is the question i have.

It has a stock throw out bearing, pilot bearing, and pressure plate, but under that was an act 4 puck unsprung performance clutch and an xact 8lbs lightweight flywheel.

Shouldn't it have a performance pressure plate, throwout bearing, and pilot bearing too?

I'm thinking that could be my problem. Any input?
Reply
Old Dec 23, 2008 | 09:15 AM
  #2  
Aaron Cake's Avatar
Engine, Not Motor
Tenured Member: 20 Years
iTrader: (1)
 
Joined: Feb 2001
Posts: 29,798
Likes: 128
From: London, Ontario, Canada
What a terrible combination of parts for a street car. I can't even imagine trying to drive that thing every day.

If the car is stock, then a stock replacement clutch is the best way to go, as well as a stock flywheel.
Reply
Old Dec 23, 2008 | 10:56 AM
  #3  
Jonathan12uiz's Avatar
Thread Starter
Junior Member
Tenured Member 05 Years
 
Joined: Aug 2008
Posts: 30
Likes: 0
From: Columbus, GA
Originally Posted by Aaron Cake
What a terrible combination of parts for a street car. I can't even imagine trying to drive that thing every day.

If the car is stock, then a stock replacement clutch is the best way to go, as well as a stock flywheel.

Please stay on topic. The motor has a wild street port, 2mm 2piece atkins apex seals, etc. so this isn't a daily driver.

My question still stands... will a stock pressure plate and throwout bearing be ok to use on a 4 puck unsprung clucth or does it require a high performance pressure plate and bearing?

and will a stock clutch, pressure plate, pilot bearing, and throwout bearing be ok to use on an 8lbs lightweight flywheel. if so I will purchase a clutch kit from mazda with my discount.
Reply
Old Dec 23, 2008 | 11:00 AM
  #4  
sunburn's Avatar
Mother****ing Wow
 
Joined: Jul 2008
Posts: 1,290
Likes: 0
From: NJ
Originally Posted by Jonathan12uiz
Please stay on topic. The motor has a wild street port, 2mm 2piece atkins apex seals, etc. so this isn't a daily driver.

My question still stands... will a stock pressure plate and throwout bearing be ok to use on a 4 puck unsprung clucth or does it require a high performance pressure plate and bearing?

and will a stock clutch, pressure plate, pilot bearing, and throwout bearing be ok to use on an 8lbs lightweight flywheel. if so I will purchase a clutch kit from mazda with my discount.
You need the correct PP disc combo. Throwout bearing with most kits is simply a stock unit.. pilot should be fine -just inspect it and replace if necessary (stock as well).
you might be able to drive on that combo -but it will not last.

I have the ACT 6 puck with HD PP and love it... don't get an Ebay clutch... go at least ACT quality.

Last edited by sunburn; Dec 23, 2008 at 11:03 AM.
Reply
Old Dec 23, 2008 | 11:05 AM
  #5  
Jonathan12uiz's Avatar
Thread Starter
Junior Member
Tenured Member 05 Years
 
Joined: Aug 2008
Posts: 30
Likes: 0
From: Columbus, GA
Originally Posted by sunburn
You need the correct PP disc combo. Throwout bearing with most kits is simply a stock unit.. pilot should be fine -just inspect it and replace if necessary (stock as well).
that would explain my problem. thank you. I'm prolly going to lean towards stock clutch kit on the lightweight flywheel seeing as the pressure plate itself from act is 400+ dollars. LOL! i'll save the 4 puck for later.
Reply
Old Dec 23, 2008 | 11:15 AM
  #6  
dgeesaman's Avatar
Moderator
Tenured Member: 20 Years
Liked
Loved
iTrader: (8)
 
Joined: May 2002
Posts: 12,313
Likes: 27
From: Hershey PA
In theory if the 4-puck matches the layout of the stock pressure plate, you can use them together. How nicely they will operate together is another question - I've never tried it. I also assume that they are both new - I never mix/match used clutch parts, even new with used.

The 4-puck design allows the use of a higher-friction material in the disc. The pressure plate has the springs that squeeze the disc. The combination of higher friction and heavier springs determines your total torque capacity and driveability. I suspect that using a 4-puck with stock PP will result in something like the poor driveability of the 4-puck with only a moderate increase in torque capacity above stock.

I'd go with a stock clutch unless your power output demands it. Too much clutch is hard on the drivetrain and is uncomfortable to drive. If you want to save money, get an Exedy (Daiken) and you'll get OEM parts for a lot less money.
Reply
Old Dec 23, 2008 | 11:18 AM
  #7  
farberio's Avatar
NASA-MW ST4
Tenured Member: 20 Years
iTrader: (7)
 
Joined: Dec 2004
Posts: 3,800
Likes: 3
From: Norcal, Bay Area
Just make sure you don't buy too little of a clutch or else it will slip. Research your mods and get an estimated HP/TQ Number ad buy and appropriate clutch.

FYI, Freeplay and pedal position can be adjusted in the pedal area.
Reply
Old Dec 26, 2008 | 10:22 AM
  #8  
Aaron Cake's Avatar
Engine, Not Motor
Tenured Member: 20 Years
iTrader: (1)
 
Joined: Feb 2001
Posts: 29,798
Likes: 128
From: London, Ontario, Canada
Originally Posted by Jonathan12uiz
Please stay on topic. The motor has a wild street port, 2mm 2piece atkins apex seals, etc. so this isn't a daily driver.
Please post relevant info like this when you first ask your question, as it helps us provide a much better answer. Otherwise we rightfully assume that it's a stock or near stock car.
Reply
Old Dec 26, 2008 | 10:28 AM
  #9  
sunburn's Avatar
Mother****ing Wow
 
Joined: Jul 2008
Posts: 1,290
Likes: 0
From: NJ
Originally Posted by Jonathan12uiz
that would explain my problem. thank you. I'm prolly going to lean towards stock clutch kit on the lightweight flywheel seeing as the pressure plate itself from act is 400+ dollars. LOL! i'll save the 4 puck for later.
I got my complete kit for $440
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
alphawolff
1st Generation Specific (1979-1985)
17
Nov 17, 2015 05:57 PM
CaptainKRM
2nd Generation Specific (1986-1992)
14
Aug 26, 2015 09:52 PM




All times are GMT -5. The time now is 12:22 AM.