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Author Topic:   front spring split
AC156
Member
posted April 02, 2003 07:23 PM
you'll never get any faster without tring new thing give it a shot if you don't like it springs are pretty ez to change back


AC156
Member
posted April 02, 2003 08:14 PM
Front end set up is a major portion of a winning combo. From spring rates to offsets,to camber it's a guessing game until you have guessed right. You will be amazed with the damage a couple of seasons will do to front springs. With the season just starting,I would try the 200lb split up front. The rates of your older front springs may surprise you where they rate now since new. Two things to always look at after "hitting the wall" are ball joints and spindles. I have guys race for a couple of weeks after hitting the wall and can't figure out way the car pushes and won't turn....it pays to check out those front end parts after a "racin' thing".


c21
Member
posted April 03, 2003 11:00 AM
springs don't loose rate. the rate is determined by the wire diameter, coil diameter and number of active coils.

this came straight out of the newest speedway illustrated magazine.

teamstertom
Member
posted April 03, 2003 08:37 PM
I have a friend in the race car business with a Longacre Hydraulic Coil Spring Tester,and I have my springs checked. I have had HyperCoils and Suspension Spring Specialist springs show weakest and needed to be rerated. I noticed the rate changes in springs,most rears,in the big heavy 71-76 Impalas that I ran for years. The lighter metric short wheel base cars seem to be a bit user friendly toward the springs. I had a 900lb front left spring in my 76 Monte fail me bad a couple of years ago. These were unaltered,untouches springs. I seen guys take cutting torches to springs...not a wise move. The post from c21 is good reading and has value.


AC156
Member
posted April 03, 2003 08:42 PM
Just a lil note about AFCO. They warranty there springs for life to be within 2% of the original spring rate, so on a 1000 lb spring, if it looses 20 lbs from the rate they will replace it (original buyer that is). I have a set out of my ol 81 regal. This car has been on the track since 98. The front spring on the checker every winter. The 950 still around 945 and the 1100 is still tesating at 1100. Mabye I'm just lucky


c21
Member
posted April 04, 2003 12:07 PM
It is possible that springs made from inferior materials, subject to loads way beyond their design limit or extreme heat .... may change rate .... but it is much more likely that their "free height" would change in amounts that have a much larger impact on folks who don't use spacers.

I will admit, I haven't rated much more than 100 coil springs .... but I have only come across 1 that I suspected had changed in rate (more than 2% or so).

c21

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