Coilover springs - what brands are close to advertised rates ? - CorvetteForum - Chevrolet Corvette Forum Discussion

Go Back  CorvetteForum - Chevrolet Corvette Forum Discussion > General Corvette Topics > Autocrossing & Roadracing
Reload this Page >

Coilover springs - what brands are close to advertised rates ?

Notices
Autocrossing & Roadracing Suspension Setup for Track Corvettes, Camber/Caster Adjustments, R-Compound Tires, Race Slicks, Tips on Driving Technique, Events, Results
Sponsored by:
Sponsored by:

Coilover springs - what brands are close to advertised rates ?

Reply

 
 
 
Old 05-24-2018, 06:02 AM
  #1  
blackozvet
CF Senior Member
Thread Starter
 
blackozvet's Avatar
 
Member Since: Nov 2009
Location: Adelaide South Australia
Posts: 1,817
Thanked 57 Times in 54 Posts
Default Coilover springs - what brands are close to advertised rates ?

I have now bought 2 x sets of coilover springs for my rear coilovers.

A pair of QA1's rated at 350 lbs - tested at 331 lbs.
A pair from a business that sells to the riceburners and drifters, rated at 7.5 kg - which converts to around 400 - 420 lbs - actual rate 291 lbs !

for the people that have tested their springs against the advertised rate over the years, which brands are usually close ?

below on the left is the spring that was sold to me as being around 400 lbs against a real 450 lb spring.


blackozvet is online now  
Reply With Quote
Old 05-24-2018, 10:51 AM
  #2  
96CollectorSport
CF Senior Member
 
96CollectorSport's Avatar
 
Member Since: Sep 2003
Location: If you don't weigh in you don't wrestle Road America
Posts: 2,915
Thanks: 0
Thanked 35 Times in 25 Posts
Default

I rate each spring before I install them and Hyperco are going to be the closest, they are +/- 3% if I remember correctly.
96CollectorSport is offline  
Reply With Quote
The Following User Says Thank You to 96CollectorSport For This Useful Post:
blackozvet (05-24-2018)
Old 05-24-2018, 11:29 AM
  #3  
xtremeyolks
Junior Member
 
Member Since: Aug 2017
Location: SF Bay Area CA
Posts: 28
Thanks: 0
Thanked 6 Times in 5 Posts
Default

Swifts or hyperco seem to be the most true to rate I've seen.
xtremeyolks is offline  
Reply With Quote
The Following User Says Thank You to xtremeyolks For This Useful Post:
blackozvet (05-24-2018)
Old 05-24-2018, 02:01 PM
  #4  
GSpeed
Supporting Vendor
 
GSpeed's Avatar
 
Member Since: Dec 2015
Location: Cresson TX
Posts: 691
Thanked 305 Times in 165 Posts
Default

Swift, hyperco, or eibach. Beware of spring shape on hyperco, see this thread-

https://www.corvetteforum.com/forums...to-tierod.html
GSpeed is offline  
Reply With Quote
The Following User Says Thank You to GSpeed For This Useful Post:
blackozvet (05-24-2018)
Old 05-24-2018, 07:28 PM
  #5  
blackozvet
CF Senior Member
Thread Starter
 
blackozvet's Avatar
 
Member Since: Nov 2009
Location: Adelaide South Australia
Posts: 1,817
Thanked 57 Times in 54 Posts
Default

thanks guys, good to know, I can get Hyperco in Aus, if I want Eibach will have to get them from Summit.

The guy who tested my springs said that typically most coil springs that he tests are anything up to 10% below advertised rate - which isnt really helpful if targetting a certain spring rate for the track !

its amazing how a 'fat' spring can cause clearance issues, had that in the front going to a higher rate.
blackozvet is online now  
Reply With Quote
Reply
 
 
 

Forum Jump

Thread Tools
Search this Thread
Sponsored Ads
Vendor Directory
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: