SUPPORT OUR SPONSOR

Go Back   Club Cobra > Club Cobra Tech Areas > Transmission Talk

Welcome to Club Cobra!  The World's largest non biased Shelby Cobra related site!

  •  » Representation from nearly all Cobra/Daytona/GT40 manufacturers
  •  » Help from all over the world for your questions
  •  » Build logs for you and all members
  •  » Blogs
  •  » Image Gallery
  •  » Many thousands of members and nearly 1 million posts! 

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

MMG Superformance
Nevada Classics
Main Menu
Nevada Classics
Nevada Classics
Keith Craft Racing
Advertise at CC
Banner Ad Rates
MMG Superformance
Keith Craft Racing
March 2021
S M T W T F S
  1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30 31      
  #1 (permalink)  
Old 12-11-2020, 07:39 PM
CC Member
Visit my Photo Gallery

 
Join Date: Nov 2018
Cobra Make, Engine:
Posts: 75
Not Ranked     
Angry Correct clutch fork?

I have a Lakewood scattershield, 351w, external hydraulics and a toploader.

I had my mechanic replace my engine because he has a lift and generally goes good work. His shop is cleaner than 90% of the commercial kitchens I work in.

I'm prior military and when something mechanical and cheap is staring me in the face while disassembled, I change it. Belts, throwout bearing, pilot bearing, etc.

Wrench calls me up at 4pm and says the fork doesn't fit right.

Told him to wait and I'd see him in the morning.

Two hours later I get a call. "She's ready and I need my lift".

Fifteen miles later, something popped and I cant disengage my clutch.
Reply With Quote
Sponsored Links
Sponsored Links
  #2 (permalink)  
Old 12-11-2020, 08:12 PM
Gaz64's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: May 2008
Location: Brisbane, QLD
Cobra Make, Engine:
Posts: 2,610
Not Ranked     
Default

Will be interesting to see some pics of what is your parts failure here.
__________________
Gary

Gold Certified Holden Technician
Reply With Quote
  #3 (permalink)  
Old 12-12-2020, 05:57 AM
patrickt's Avatar
Half-Ass Member
Visit my Photo Gallery

 
Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 20,596
Not Ranked     
Default

Quote:
Originally Posted by incoming View Post

Fifteen miles later, something popped and I cant disengage my clutch.
Was the "pop" from your knee or the clutch?
Reply With Quote
  #4 (permalink)  
Old 12-12-2020, 07:13 AM
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2020
Cobra Make, Engine:
Posts: 4
Not Ranked     
Default

Were you depressing the clutch when the pop occurred? I also have SBF but stroker 302 and Lakewood Bellhousing. My release fork is a mid 70’s F100/150 style (no longer available and no replacement part). Mine pivots across a thru bolt held by a U bracket. You may have one of those style of fork with an actual pivot ball as the fulcrum point. The only thng I can think is if there were fitment issues and the fork wasn’t on that pivot securely, that when you depressed, it slipped off with a pop. Given how much hydraulic force is needed to work the release fork, I’m guessing it would have been a metallic pop.

My clutch isn’t working at all (post on fork travel). I replaced my flywheel, clutch, and pressure plate but didn’t carefully measure new .vs. old and the fingers on my pressure plate are has high as what I replaced. I had to space out the U bracket holding the pivot bolt guessing that 3/4” fork travel would be enough to articulate the fingers of the pressure plate (translates to a 3/8”) push. I guessed wrong. So I’m left trying to figure out if I can space enough to get my clutch to work OR ...

...Look into another solution. Tilton and I think McLeod make a hydraulic throwout bearing for T5/TKO/Toploader (and a others). I’m looking into that as a solution. If for some reason the fork you have just isn’t going to work, that may be a solution. Based on what I’ve uncovered, you need a 7/8” master push enough fluid and you have limit clutch pedal travel as at least the Tilton has no internal limit. Over traveling the hydraulic TO will destroy it. This is what I’ve read, I have not implemented this solution so please do your research if you think that might be what you need to do, if you can’t locate a fork. (You know it occurred to me that maybe contact Lakewood as they may have a solution). Heck I just thought of this myself! (Off to email Lakewood on MY problem).
Reply With Quote
  #5 (permalink)  
Old 12-12-2020, 03:46 PM
CC Member
Visit my Photo Gallery

 
Join Date: Nov 2018
Cobra Make, Engine:
Posts: 75
Not Ranked     
Default

Thanks for the input. My local down the road parts house couldn't locate one in their system. I'm looking for a 69-73 Mustang fork and am going to give it a whirl. Over a hundred years of experience at the counter and no luck.

Went to my second go to place with over forty years for one guy behind the counter located one in Nashville for $22 and will get here Tuesday. That kind of sucks because a medical procedure cancelled in March due to the China Virus is scheduled for Wednesday.

Gaz, I don't think it was mechanical failure. I feel sure it's the incorrect part.
Reply With Quote
  #6 (permalink)  
Old 12-12-2020, 10:13 PM
Gaz64's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: May 2008
Location: Brisbane, QLD
Cobra Make, Engine:
Posts: 2,610
Not Ranked     
Default

Does seem odd that you had 15 miles of clutch operation, and then "pop".

I guess your mechanic should warrant his work on this, whatever has happened.
__________________
Gary

Gold Certified Holden Technician
Reply With Quote
  #7 (permalink)  
Old 12-14-2020, 12:21 PM
MaSnaka's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Feb 2006
Location: Thousand Oaks, CA
Cobra Make, Engine: Classic Roadster
Posts: 1,301
Not Ranked     
Default

Others may or may not agree but I would avoid going with the HTO. I was replacing or rebuilding every year. Switched to the external and have been trouble free for a long time now (knocking on wood as I type this). Mike Forte at Fortes Parts Connection may have what you need.

Good Luck, John
Reply With Quote
  #8 (permalink)  
Old 12-16-2020, 11:25 PM
saki302's Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Jul 2009
Location: Los Angeles, CA
Cobra Make, Engine: Superformance Mk3, Roush 427
Posts: 174
Not Ranked     
Default

Do you have the original fork?

I replaced mine as the original showed some wear. I measured and compared it online- mine was just a common mustang fork.

It really shouldn't be able to pop off under operation- something was jury rigged badly or installed way off.

-Dave
__________________
Reply With Quote
Reply


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 09:50 PM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: CC Policy