Go Back   Corvette Forum > C3 Corvettes, 1968 - 1982 > C3 Tech/Performance
Sign in using an external account
Register Forgot Password?
Register Search Today's Posts Mark Forums Read FAQ Vendor Directory
Search
C3 Tech/Performance
V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette Sponsored by
VBP

Welcome to Corvetteforum.com!
Welcome to Corvetteforum.com.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Corvetteforum.com today!


Corvette Store
 
 
C7 Parts & Accessories
C6 Parts & Accessories
C5 Parts & Accessories
C4 Parts & Accessories
C3 Parts & Accessories
C2 Parts & Accessories
C1 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
  
Reply
 
 
 
 
Thread Tools Search this Thread
Old 11-08-2006, 09:04 PM   #1
LYLE
CF Senior Member
 
LYLE's Avatar
 
Member Since: Mar 2002
Default Composite spring torque value on bolts

I put a vette brackes and products rear composite spring on my 80and used the old three hole plate. I got the 50 foot pounds torque on the one bolt on the front side. The two bolts to the rear seem to be bending the plate before reaching the torque. The new spring is 2" and the old was 2 and1/2" wide. I think this is causing the problem. Any thoughts?
LYLE is offline   Reply With Quote
Old 11-08-2006, 09:41 PM   #2
mbeeman350
CF Senior Member
St. Jude Donor '03-'05-'06-'07-'09
 
mbeeman350's Avatar
 
Member Since: Feb 2003
Location: Auburndale Florida
Mark Beeman mbeeman350 Mark Beeman
Default

What did the instructions from VBP say? If nothing you need to call them direct for sure so not to damage the spring.
mbeeman350 is online now   Reply With Quote
Old 11-08-2006, 10:10 PM   #3
DVNTST8
CF Senior Member
St. Jude Donor '09
 
DVNTST8's Avatar
 
Member Since: May 2005
Location: if you have a ? on my avatar, please contact me directly, you spineless twit
dvnt_st8
Default

I happen to have my instructions right here.


3. Evenly torque factory bolts and steel plate to Reduced specs.

4. 63-77 / 40-45 lbs ft 78-79 / 40-45 lbs ft 80-82 45-50 lbs ft (flat side of plate to spring)


If you're tightening them evenly....who knows?
DVNTST8 is offline   Reply With Quote
Old 11-08-2006, 11:08 PM   #4
Van Steel
Premium Supporting Vendor
 
Van Steel's Avatar
 
Member Since: May 2000
Location: Clearwater FL
Send a message via AIM to Van Steel
Default

Do you have a pad on top of the spring and on the bottom of the spring? I can measure a new one tomorrow morning.
Van Steel is offline   Reply With Quote
Old 11-08-2006, 11:43 PM   #5
LYLE
CF Senior Member
 
LYLE's Avatar
 
Member Since: Mar 2002
Default

Their is a pad on the top and the bottom and I had the instructions that said 45-50 foot lbs for a 80. With a half inch of space between the spring and the bolts the cover plate looks to me like it is bending on the side with two holes and I have not met the 50#s yet. The back one bolt met the torque with no problem. On an 80 the spring bolt plate is a triangle with three bolts.
LYLE is offline   Reply With Quote
Old 11-09-2006, 06:14 PM   #6
LYLE
CF Senior Member
 
LYLE's Avatar
 
Member Since: Mar 2002
Default

The back side of the instruction sheet was blured but I think it said 36-40 footpounds for a 80. Not sure why the front and back would be different numbers. I guess I neeed to give them a call.
LYLE is offline   Reply With Quote
Old 11-09-2006, 07:29 PM   #7
...Roger...
CF Senior Member
 
...Roger...'s Avatar
 
Member Since: May 2006
Location: Dayton, Ohio
Default

Isnt there a steel plate that stands up between the plate and housing and goes under the 2 bolt side? The single bolt side bottoms the plate against housing.
Edit I think you need GM #14030190 This gives the bolts something to bottom out on instead of squeezing the pads.
Click the image to open in full size.

Last edited by ...Roger...; 11-09-2006 at 07:51 PM.
...Roger... is offline   Reply With Quote
Old 11-09-2006, 10:22 PM   #8
LYLE
CF Senior Member
 
LYLE's Avatar
 
Member Since: Mar 2002
Default

No part like that was on the car. All that came in the spring box was the spring. I can see how that plate would help but the size would need to be perfect.
LYLE is offline   Reply With Quote
Old 11-09-2006, 10:26 PM   #9
mbeeman350
CF Senior Member
St. Jude Donor '03-'05-'06-'07-'09
 
mbeeman350's Avatar
 
Member Since: Feb 2003
Location: Auburndale Florida
Mark Beeman mbeeman350 Mark Beeman
Default

Quote:
Originally Posted by LYLE
No part like that was on the car. All that came in the spring box was the spring. I can see how that plate would help but the size would need to be perfect.
Never saw this part in any literature or pics ???
mbeeman350 is online now   Reply With Quote
Old 11-09-2006, 10:33 PM   #10
...Roger...
CF Senior Member
 
...Roger...'s Avatar
 
Member Since: May 2006
Location: Dayton, Ohio
Default

Quote:
Originally Posted by LYLE
No part like that was on the car. All that came in the spring box was the spring. I can see how that plate would help but the size would need to be perfect.
On your triangular plate you'll notice a small hole between the 2 bolt holes thats where one of the protrusions on the plate goes- the other one goes into a hole in the diff.This plate in the pic is actually for an 81 with a composite spring and was not used with a steel spring(FE7).One reason you didnt have this was you had a steel spring and now your going to composite.The only question I would have is if your 80 diff. has the matching small hole in the diff.This is a little confusing to try and explain.I guess in a pinch you could use one of the old #459032 spacer plates.

Last edited by ...Roger...; 11-09-2006 at 11:38 PM.
...Roger... is offline   Reply With Quote
Old 11-09-2006, 10:37 PM   #11
...Roger...
CF Senior Member
 
...Roger...'s Avatar
 
Member Since: May 2006
Location: Dayton, Ohio
Default

Quote:
Originally Posted by mbeeman350
Never saw this part in any literature or pics ???
Do you have a GM parts and Illustration catalog ?
...Roger... is offline   Reply With Quote
Old 11-10-2006, 10:14 AM   #12
Van Steel
Premium Supporting Vendor
 
Van Steel's Avatar
 
Member Since: May 2000
Location: Clearwater FL
Send a message via AIM to Van Steel
Default

That piece should be there. It won't come in your new kit as you are supposed to re-use it.
Van Steel is offline   Reply With Quote
Old 11-10-2006, 08:09 PM   #13
LYLE
CF Senior Member
 
LYLE's Avatar
 
Member Since: Mar 2002
Default

I have a 80 with a steel spring I was replaceing I think the other poster said that spacer was used on a 81 that had a factory composite spring. I do not know if my car had the hole this plate goes in but I doubt it as it wasn't needed in 80.
LYLE is offline   Reply With Quote
Old 11-10-2006, 08:36 PM   #14
82Vette'ster
CF Senior Member
 
82Vette'ster's Avatar
 
Member Since: Sep 2003
Location: Phoenix AZ
Send a message via AIM to 82Vette'ster
Default

My 82 has a replacement TRW spring and the plate is installed. From the look of it I'd say it is needed.
82Vette'ster is offline   Reply With Quote
Old 11-10-2006, 08:44 PM   #15
...Roger...
CF Senior Member
 
...Roger...'s Avatar
 
Member Since: May 2006
Location: Dayton, Ohio
Default

Lyle -is your composite set up like this? I seperated the pieces a little bit so you could see them.The piece with the X on it is steel and what keeps the distance so the bolts can be torqued.The composite cant be held tight -it has to be captured and cradled in rubber.I think the piece in the pic I posted will work for you providing the holes are there.If the holes are not there you can drill them.The piece is 2 1/4 tall and 2 1/2 wide.The plate in my pic takes the place of the piece in this pic with the X.
Click the image to open in full size.

Last edited by ...Roger...; 11-10-2006 at 08:47 PM.
...Roger... is offline   Reply With Quote
Old 11-11-2006, 09:13 AM   #16
LYLE
CF Senior Member
 
LYLE's Avatar
 
Member Since: Mar 2002
Default

Thanks The spring came with electrical tape holding all the parts together so I will need to check it out. I would think the vendor would have sent the correct parts as it was ordered for a 80 from Voulenteer and drop shipped from I think something like vett brakes I will check the label.
LYLE is offline   Reply With Quote
Old 11-11-2006, 10:24 AM   #17
...Roger...
CF Senior Member
 
...Roger...'s Avatar
 
Member Since: May 2006
Location: Dayton, Ohio
Default

Lyle if your spring is this type in this link then you will "HAVE" to have either the plate I showed you or something like it to limit how far the bolts can go.This spring in this link only has rubber top and bottom.It has no steel as the TRW spring in post #16.Look at the differance in the mounting systems the TRW is much more complex than the one from Van Steel
http://www.vansteel.com/index.cfm?fu...&SubGroup=1852
...Roger... is offline   Reply With Quote
Old 11-11-2006, 11:23 AM   #18
...Roger...
CF Senior Member
 
...Roger...'s Avatar
 
Member Since: May 2006
Location: Dayton, Ohio
Default

Quote:
Originally Posted by Van Steel
That piece should be there. It won't come in your new kit as you are supposed to re-use it.
Van Steel-thats where the problem is -Lyle's 80 didnt come with that piece because his 80 came with a steel spring and that piece was not needed.I'm pretty sure his 80 housing and lower 3 bolt plate has the needed holes to use the piece.If not he can drill the holes.The only thing left I would be looking at is the differance in spring width.I wonder if he would be better off with the TRW type in post #16.
...Roger... is offline   Reply With Quote
Old 11-12-2006, 10:55 AM   #19
82Vette'ster
CF Senior Member
 
82Vette'ster's Avatar
 
Member Since: Sep 2003
Location: Phoenix AZ
Send a message via AIM to 82Vette'ster
Default

Quote:
Originally Posted by LYLE
.... The new spring is 2" and the old was 2 and1/2" wide. ....
Is that the right spring then?

Quote:
Originally Posted by DWncchs
....wonder if he would be better off with the TRW ....
Note that the TRW springs are known for too much arch. 8 inch bolts at least to get stock ride hight. Previous owner put the one in my car, I would not have bought a TRW. .

Last edited by 82Vette'ster; 11-12-2006 at 10:59 AM.
82Vette'ster is offline   Reply With Quote
Old 11-12-2006, 12:15 PM   #20
...Roger...
CF Senior Member
 
...Roger...'s Avatar
 
Member Since: May 2006
Location: Dayton, Ohio
Default

Quote:
Originally Posted by 82Vette'ster
Is that the right spring then?



Note that the TRW springs are known for too much arch. 8 inch bolts at least to get stock ride hight. Previous owner put the one in my car, I would not have bought a TRW. .
Your right they are high and you generally do need the extended bolts.What I like about them they went the extra mile to make the mounting nice.That seems to be where most people run into a problem with plastic springs.They must be isolated from metal and not squezed too tight.Also shielded from heat.
...Roger... is offline   Reply With Quote
Old 11-12-2006, 12:15 PM
 
Go Back   Corvette Forum > C3 Corvettes, 1968 - 1982 > C3 Tech/Performance
Reload this Page Composite spring torque value on bolts
 
 
 
Reply

Tags
bolts, c3, composit, composite, corvette, spring, torque, value


Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Diff spring bolt holes Omarsvette C3 Tech/Performance 4 08-29-2013 01:08 AM
rear composite spring johnnied C3 Tech/Performance 4 06-19-2012 05:47 PM
355# composite spring dmaaero C3 Parts for Sale/Wanted 6 05-07-2008 09:58 PM
WHHHYYY is fluid pouring from my differential!!! Wuttin C3 Tech/Performance 18 03-29-2007 02:01 PM
Quick Composite spring ?????? theandies C3 Tech/Performance 4 01-27-2007 09:24 PM


All times are GMT -4. The time now is 07:24 AM.


Emails & Password Backup