C1 & C2 Corvettes General C1 Corvette & C2 Corvette Discussion, Technical Info, Performance Upgrades, Project Builds, Restorations

Gorilla spring

Old 09-15-2011, 02:36 PM
  #1  
zangx1
Racer
Thread Starter
 
zangx1's Avatar
 
Member Since: Sep 2010
Location: wyoming pa
Posts: 273
Received 7 Likes on 7 Posts

Default Gorilla spring

HELP!!!
How do you safely install this
spring?
Old 09-15-2011, 02:54 PM
  #2  
wmf62
Race Director
 
wmf62's Avatar
 
Member Since: Jun 2006
Location: Inverness FL
Posts: 17,891
Received 727 Likes on 621 Posts
St. Jude Donor '07

Default

do a search for Plasticman and/or gorilla spring and you will find info.
Bill
Old 09-15-2011, 04:28 PM
  #3  
Plasticman
Race Director

 
Plasticman's Avatar
 
Member Since: Nov 2000
Location: Beverly Hills (Pine Ridge) Florida
Posts: 10,152
Received 525 Likes on 374 Posts

Default

Here is the info that I had previously wrote (about installing the C1 return spring).

No special tool is required other than a large Crescent Wrench (12" or so). Assemble the spring at the bottom, then assemble it onto upper bracket (the bracket that bolts to the cross shaft), then assemble the bracket to the cross shaft using the bottom bolt only (leave this bolt loose so that the bracket can pivot in relation to the cross shaft). Then attach the Crescent wrench to the top of the bracket (across the upper end of the bracket - about a 1" gap at the Crescent wrench) and pivot the bracket into place and insert the top bolt. Adjust the bracket via the Crescent wrench (in relation to the cross shaft) so that the specified effort is obtained at the pedal, and then tighten the 2 bolts (see the ST-12 for adjustment procedure - you do have the ST-12 don't you?).

Hope this helps,
Plasticman
The following users liked this post:
solidaxel (08-26-2017)
Old 09-15-2011, 04:41 PM
  #4  
Frankie the Fink
Team Owner

 
Frankie the Fink's Avatar
 
Member Since: Aug 2007
Posts: 58,062
Received 7,082 Likes on 4,736 Posts
Army

Default

Originally Posted by Plasticman
Here is the info that I had previously wrote (about installing the C1 return spring).

No special tool is required other than a large Crescent Wrench (12" or so). Assemble the spring at the bottom, then assemble it onto upper bracket (the bracket that bolts to the cross shaft), then assemble the bracket to the cross shaft using the bottom bolt only (leave this bolt loose so that the bracket can pivot in relation to the cross shaft). Then attach the Crescent wrench to the top of the bracket (across the upper end of the bracket - about a 1" gap at the Crescent wrench) and pivot the bracket into place and insert the top bolt. Adjust the bracket via the Crescent wrench (in relation to the cross shaft) so that the specified effort is obtained at the pedal, and then tighten the 2 bolts (see the ST-12 for adjustment procedure - you do have the ST-12 don't you?).

Hope this helps,
Plasticman
Here is my lovely artwork on where the wrench goes !
Attached Images  
The following 2 users liked this post by Frankie the Fink:
63Corvette (08-26-2017), solidaxel (08-26-2017)
Old 09-15-2011, 06:45 PM
  #5  
firstgear
Le Mans Master
Support Corvetteforum!
 
firstgear's Avatar
 
Member Since: Sep 2003
Location: Norwalk ohio
Posts: 8,927
Received 640 Likes on 358 Posts
2019 Corvette of the Year Winner
St. Jude Donor '15

Default

Originally Posted by Frankie the Fink
Here is my lovely artwork on where the wrench goes !
Old 09-15-2011, 08:01 PM
  #6  
1snake
Le Mans Master
 
1snake's Avatar
 
Member Since: Dec 2007
Location: Puget Sound
Posts: 8,000
Received 652 Likes on 446 Posts

Default

Do like Plasticman said. It is described in the ST-12. People have been cussin' at installing the gorilla spring for years but if they follow the instructions written by Chevrolet over 50 years ago, it takes less than 1 minute to install it. I've seen people make special tools, pullers etc. or wedge washers in it to expand it enough to get it hooked up and I laugh my azz off. If they only knew how to read the service manual.

Jim
Old 09-16-2011, 09:47 AM
  #7  
Steve59
Drifting
 
Steve59's Avatar
 
Member Since: Aug 2008
Location: Philadelphia Pa
Posts: 1,891
Received 44 Likes on 36 Posts

Default

Just watch your knuckles.....
Old 03-14-2012, 10:05 PM
  #8  
dcrocker316
Racer
 
dcrocker316's Avatar
 
Member Since: Feb 2008
Location: Greer South Carolina
Posts: 304
Likes: 0
Received 1 Like on 1 Post

Default

thanks plasticman. Dave
Old 08-25-2017, 05:39 PM
  #9  
1961Corvette
7th Gear
 
1961Corvette's Avatar
 
Member Since: Aug 2017
Posts: 7
Likes: 0
Received 1 Like on 1 Post
Default

Hi,
we've had our 61 in the family since 1963, and trying to install the gorilla spring, and appears to be a couple inches too short, is this right? Should it have to be extended thta much to connect to the linkage from the frame?
Old 08-25-2017, 06:15 PM
  #10  
Geralds57
Safety Car
Support Corvetteforum!
 
Geralds57's Avatar
 
Member Since: May 2007
Location: Indiana
Posts: 3,590
Received 596 Likes on 361 Posts
2023 C1 of the Year Finalist - Modified
2023 C3 of the Year Finalist - Unmodified
2022 C1 of the Year Finalist - Modified
2020 C1 of the Year Finalist - Modified
2019 C1 of Year Finalist (performance mods)
2018 C1 of Year Finalist

Default

Originally Posted by 1961Corvette
Hi,
we've had our 61 in the family since 1963, and trying to install the gorilla spring, and appears to be a couple inches too short, is this right? Should it have to be extended thta much to connect to the linkage from the frame?
It's not too short if it's factory type spring. In Franks picture, the bracket pivots down on the lower bolt, then attach the spring, then use the crescent wrench to bring it up to the top and line up the bolt hole for the top bolt and tighten everything down.
Old 08-25-2017, 06:31 PM
  #11  
Frankie the Fink
Team Owner

 
Frankie the Fink's Avatar
 
Member Since: Aug 2007
Posts: 58,062
Received 7,082 Likes on 4,736 Posts
Army

Default

Make SURE you have the hook at the top and the hairpin clip at the bottom of the spring per the picture - I've actually seen the Bubba'ed in that regard. Rocking the Z-bar as indicated you will come to a 'sweet spot' where the spring almost falls on - then you'll ask yourself what the big deal was...
Old 08-25-2017, 06:43 PM
  #12  
65GGvert
Team Owner
 
65GGvert's Avatar
 
Member Since: Jul 2006
Location: Kannapolis NC
Posts: 20,571
Received 3,217 Likes on 2,301 Posts

Default

Originally Posted by Frankie the Fink
Make SURE you have the hook at the top and the hairpin clip at the bottom of the spring per the picture - I've actually seen the Bubba'ed in that regard. Rocking the Z-bar as indicated you will come to a 'sweet spot' where the spring almost falls on - then you'll ask yourself what the big deal was...
I used a 3 ft long floor jack handle to do it by myself. I put the handle behind the part of the bar where the spring adaptor plate oval thing goes and under a frame attachment and pushed down the "z" bar and hooked the plate on and released the handle, took about 5 seconds. As Frankie said, once you get over the center, the farther you go, the less tension there is on the spring and it gets easier.
Old 08-25-2017, 07:06 PM
  #13  
MOXIE62
Safety Car
 
MOXIE62's Avatar
 
Member Since: Aug 2011
Posts: 3,572
Received 332 Likes on 275 Posts

Default

I've got an old Model A jack that the top will fit right between the 531367 clip and the black arm with the red lines drawn on it. I just jack it up till I could get the top bolt in. Worked well for me. You need to make sure that horse show clip is snug on the frame. Had one to pop off in traffic and never could find it. Don't know why the did not weld that in place.
Old 08-25-2017, 09:07 PM
  #14  
1961Corvette
7th Gear
 
1961Corvette's Avatar
 
Member Since: Aug 2017
Posts: 7
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by Geralds57
It's not too short if it's factory type spring. In Franks picture, the bracket pivots down on the lower bolt, then attach the spring, then use the crescent wrench to bring it up to the top and line up the bolt hole for the top bolt and tighten everything down.
Success, I've had it installed wrong for 35 years since i did a frame off restauratuon..
Old 08-25-2017, 09:49 PM
  #15  
Geralds57
Safety Car
Support Corvetteforum!
 
Geralds57's Avatar
 
Member Since: May 2007
Location: Indiana
Posts: 3,590
Received 596 Likes on 361 Posts
2023 C1 of the Year Finalist - Modified
2023 C3 of the Year Finalist - Unmodified
2022 C1 of the Year Finalist - Modified
2020 C1 of the Year Finalist - Modified
2019 C1 of Year Finalist (performance mods)
2018 C1 of Year Finalist

Default

Originally Posted by 1961Corvette
Success, I've had it installed wrong for 35 years since i did a frame off restauratuon..
Old 08-26-2017, 09:17 AM
  #16  
1961Corvette
7th Gear
 
1961Corvette's Avatar
 
Member Since: Aug 2017
Posts: 7
Likes: 0
Received 1 Like on 1 Post
Default

need to weld up the groove though, as original lever on vehicle and about 7/8 wore through...nice to have a MIG handy

Get notified of new replies

To Gorilla spring



Thread Tools
Search this Thread
Quick Reply: Gorilla spring



All times are GMT -4. The time now is 09:36 PM.