C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

clutch geometry help

Thread Tools
 
Search this Thread
 
Old Mar 4, 2006 | 06:52 AM
  #1  
jerkyboy's Avatar
jerkyboy
Thread Starter
Melting Slicks
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2002
Posts: 2,152
Likes: 243
From: Northern VA
Default clutch geometry help

I've got a Hayes single mass flywheel, new centerforce DF clutch and pressure plate. Using stock fork with TO from centerforce. This is the second one I've had on here and it's slipping again. The last disc showed signs of cracking at the ends which leads me to believe that the disc is hitting the flywheel at an angle and not completely flush so it allows it to slip. Anyone encounter this problem with this set up? Since I'm running a single mass, do I need a different fork?
Reply
Old Mar 5, 2006 | 01:23 AM
  #2  
sterjess's Avatar
sterjess
Advanced
 
Joined: Apr 2005
Posts: 66
Likes: 0
From: Walcott ND
Default

Was the last disk worn down a lot, like down to the rivets. If it's not worn down much the flywheel is machined too much and will cause premature clutch failure.
Reply
Old Mar 5, 2006 | 08:56 AM
  #3  
LD85's Avatar
LD85
Race Director
25 Year Member
 
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
Default

Roger at Centerforce Tech told me that you can machine the Single Mass FW down to NO LESS THAN a 1/8" CLEARANCE/GAP between the Crank/FW bolt heads and the Clutch Disc Springs. Once you get close to the 1/8" gap point, you need a new FW.

Regarding the crack on the ends, my guess is that the PP, "might" not be releasing completely.
Reply
Old Mar 5, 2006 | 12:15 PM
  #4  
jerkyboy's Avatar
jerkyboy
Thread Starter
Melting Slicks
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2002
Posts: 2,152
Likes: 243
From: Northern VA
Default

Thanks guys. My FW is almost new. What would cause the PP not to release fully? I do get a little crunch going into gears. The engine will roll right thru 4th gear though so it's definitely slipping too. Think I have two seperate issues?
Reply
Old Mar 5, 2006 | 01:00 PM
  #5  
LD85's Avatar
LD85
Race Director
25 Year Member
 
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
Default

Originally Posted by jerkyboy
Thanks guys. My FW is almost new. What would cause the PP not to release fully? I do get a little crunch going into gears. The engine will roll right thru 4th gear though so it's definitely slipping too. Think I have two separate issues?
My guess would be that the hydraulics's are not stroking far enough due to air in the line, or leaking fluid, or master cylinder issues.

You probably have checked all of the times that I mentioned.

Another possibility is that the TOB/tranny sleeve might need a good lube

Just guessing
Reply
Old Mar 5, 2006 | 03:17 PM
  #6  
sterjess's Avatar
sterjess
Advanced
 
Joined: Apr 2005
Posts: 66
Likes: 0
From: Walcott ND
Default

One other thing to note is that if the weight of the tranny sits on the clutch disk during installation it will bend the disk and could cause the wear on the outer edges you mentioned.
Reply

Get notified of new replies

To clutch geometry help





All times are GMT -4. The time now is 02:09 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE