Visit The Dirt Forum for More Information

Author Topic:   Who uses reverse front spring split & why?
d4490
Dirt Maniac

Total posts: 143
posted April 26, 2004 01:04 PM  
I am thinking about changing my front springs in my Ford street stock, and was wondering what to expect if I put reverse spring split into the car. Currently the car (Crown Vic) has rf-1100, lf-900, lr-300, and rr-250 with no sway bar. What will flipping the front springs do, and what changes do I have to make to the car to balance the set-up? Currently the left front tire gets almost no heat in it. I don't have the percentages at the moment, the last time I remembered is 53% left, 51% rear, and about 51% cross.

[This message has been edited by d4490 (edited April 26, 2004).]

akadirtracer7
Dirt Freak

Total posts: 217
posted April 27, 2004 12:17 PM  
I don't run it reverse but I run 1100 rf and 1000 lf. I'm running a 77 ltd II frame.One of the old timers at the track does what your saying ,he runs up high and don,t have much motor and it pedal to the metal all the time.Yea I run at HSP and we get to run goodyears until June 1st.

c21
Dirt Forum Champ
Total posts: 521
posted April 27, 2004 12:29 PM  
reversing your front split should loosen the car on entrance (unless you use your brakes AND have a high rear bias).

the effect in the middle has a lot to do with the amount of banking on your track (cars running on medium to high banked tracks will loosen in the middle, with the effect diminishing as the banking does).

on exit, it should tighten your car.

depending what your track is like, you may find your car likes a little more static cross with this set-up (unless your finding yourself pushing on exit already, in which case .... I wouldn't bother swapping the springs anyway).

c21

sixwillwin
Dirt Freak

Total posts: 493
posted April 27, 2004 03:11 PM  
c21s comments are dead on correct.....can be wicked fast if your car wants it, the corner entrys are the tricky part until you get used to it...

------------------
The Joy of Six website

zeroracing
Dirt Forum Champ
Total posts: 1875
posted April 27, 2004 04:03 PM  
just swapping the fronts like you have, without touching the rears.
the stiffening of the lf would tighten entrance and make no noticable effect on exit.
softening the rf would tighten entry and loosen exit.
this is because when the car goes into the corner and the wieght goes to the front of the car, and the right side of the car. it will make more wieght go to the lf, and rr. that will tighten up the car on entry. by loading the rr more.
then on the exit it would let the body roll over, and give the rr more wieght, which will loosen exit, because your driving harder off the rr then you were.

c21
Dirt Forum Champ
Total posts: 521
posted April 27, 2004 04:33 PM  
d4490,
keep in mind the effect spring rates have on dynamic cross as they extend .....

.... this is all to often ignored.

c21

zeroracing
Dirt Forum Champ
Total posts: 1875
posted May 03, 2004 09:58 AM  
put it on my car this weekend, and did just like i stated in the post above.

star1modified
Dirt Maniac

Total posts: 102
posted May 03, 2004 04:30 PM  
So should you reverse them both?

    

Back to the Archives