Rear Coilover Spring Rate Help

MROD7007 · 05-26-2021, 12:27 PM

Looking for advice on what spring rate would be best and why?

Details: Ladder Bar, Santhuff Double Adjustable on all 4, 150 springs on the front, 406, Glide, 1600lb. rear weight, 19" rear shock length. 1700lb front weight.

Mark

SSDiv6 · 05-26-2021, 12:49 PM

Quote:

Originally Posted by MROD7007

Looking for advice on what spring rate would be best and why?

Details: Ladder Bar, Santhuff Double Adjustable on all 4, 150 springs on the front, 406, Glide, 1600lb. rear weight, 19" rear shock length. 1700lb front weight.

Mark

Reach out to Marty Rinehart at Rinehart Performance. They sell and work with Santhuff on all kinds of combos.

MROD7007 · 05-26-2021, 07:06 PM

I have asked them and they recommend 125# and Santhuff had recommended a 150# spring along with a few others. However I want someone to explain why use a specific rate and how it should affect the car.

Marty Rinehart Jr · 05-26-2021, 10:09 PM

Mark. You’re car is gonna work just fine trust me!

Eman · 05-27-2021, 12:00 AM

There are good technical pages on the Chris Alston chassis site. Info on choosing spring rates and setting up coilovers.

Lenny5160 · 05-27-2021, 02:22 PM

Isn't the theory that you want the lightest spring that will hold the car up? That will most easily allow your ladder bar and shock adjustments to do their thing without unnecessary resistance from the springs.

05-26-2021, 12:27 PM	#1
MROD7007 Junior Member Join Date: Jul 2018 Posts: 9 Likes: 1 Liked 1 Time in 1 Post	Rear Coilover Spring Rate Help Looking for advice on what spring rate would be best and why? Details: Ladder Bar, Santhuff Double Adjustable on all 4, 150 springs on the front, 406, Glide, 1600lb. rear weight, 19" rear shock length. 1700lb front weight. Mark

05-26-2021, 07:06 PM	#3
MROD7007 Junior Member Join Date: Jul 2018 Posts: 9 Likes: 1 Liked 1 Time in 1 Post	Re: Rear Coilover Spring Rate Help I have asked them and they recommend 125# and Santhuff had recommended a 150# spring along with a few others. However I want someone to explain why use a specific rate and how it should affect the car.

05-26-2021, 10:09 PM	#4
Marty Rinehart Jr Member Join Date: Dec 2001 Location: Rineharts Performance Race Cars, Thomasville,PA Posts: 454 Likes: 222 Liked 211 Times in 50 Posts	Re: Rear Coilover Spring Rate Help Mark. You’re car is gonna work just fine trust me! __________________ Marty Rinehart Jr 1125 SS STK SG SC SST

05-27-2021, 12:00 AM	#5
Eman Member Join Date: May 2014 Location: E TN Posts: 452 Likes: 14 Liked 112 Times in 65 Posts	Re: Rear Coilover Spring Rate Help There are good technical pages on the Chris Alston chassis site. Info on choosing spring rates and setting up coilovers.

05-27-2021, 02:22 PM	#6
Lenny5160 Senior Member Join Date: Nov 2015 Location: Inver Grove Heights, MN Posts: 898 Likes: 604 Liked 432 Times in 225 Posts	Re: Rear Coilover Spring Rate Help Isn't the theory that you want the lightest spring that will hold the car up? That will most easily allow your ladder bar and shock adjustments to do their thing without unnecessary resistance from the springs. __________________ S/ST 51 S/C 53