RR Spring Location.

[@JimJuneau]

IMCA Northern Sport Mod. What is a good location for the RR spring on top. Meaning centerline of spring to centerline of the tire or brake rotor? Thanks

[@jaynealgofast]

Sorry I don't understand the question, on an NSM the spring has to be on top and centered on the axle, I also think but not sure it is to straight down from the frame rail. This would mean that you are center line of both the tire and the rotor

[@JimJuneau]

@@jaynealgofast Looking at the car from behind. The distance between the C/L of the spring to the C/L of the tire. If someone says they run a 200 RR spring and the distance from the spring only 12" from the tire, and mine is 8", I would need to run a softer spring or add lead to load my RR the same. Just wondering about what the average distance should be?

[@AntonLoskot]

I run a factory stock in Illinois.(ump) both springs are center. My chassis builder is very adamant about running a 13” (250) in the LR and 11”in the RR (200) I’m struggling with it bad super tight in the middle (like trying to turn the dump truck in wet sand)on the brakes, throttle brakes throttle I know I’m completely upsetting the car, but I cannot get through any other way. but he seems the think I’m over driving it in..I can’t wait for you to get the mapping video done because I’ll waiting to watch it.. I do appreciate you taking the time to do these videos it does help!!

[@jaynealgofast]

We are working on that now, if you reduce the LR load (250 spring) down it should help with the push. Also increase rebound RF.

[@shannoncollins16]

Out here in Oregon with an 06 Terminator in the Street Stock class, both rear springs are in front. Seems to work fine but it's my first car like this.

[@jaynealgofast]

Thank you for replying, good info.

[@DanielGebeyehu-km7kz]

I have also FORD ESCORT in good condition from ETHIOPIA

[@firstclassestatesalesofnwa5106]

Why not spring in rear, shock in front? On usra b mod

[@jaynealgofast]

We are doing some of this, it makes the car pretty tight.

[@RebelRacing21]

So down here in the southeast we run what we call Hobby/thunder cars. Think of it as old late models that are Camaro clipped and we don’t have the top bars. 2 lower links and a biscuit bar. Most everyone runs lr in front on a slider and RR behind on a slider or coil over. We do typically run anywhere between 275-300lb RR spring rate. We also have a ton of dynamic steer in our cars. Up to 3- 3.5 inches so a spring on top never works. Tracks get really slick around here in the summer.

[@jaynealgofast]

Very good info and yes I agree with your rates on the RR. Thanks for sharing.

[@RebelRacing21]

@@jaynealgofast yes sir. Love your videos Jay. Great info and it only costs the attention someone is willing to pay.

[@JoshuaCox-lm8gn]

I got a LR shock from yall

[@jaynealgofast]

Nice! LR shocks are awesome! Hope it takes your ride to the next level!

[@JosephReed-l3y]

I run a super stock here in Indiana and we run our springs on top. 13” 225# on the RR and 16” 200# on the LR.

[@jaynealgofast]

That sounds good.

[@billtice2648]

I am still running old style set ups, have to run centered, have 14" 250 lr, 11" 175 rr with spring rubber.

[@jaynealgofast]

Thanks for your input.

[@block21motorsports]

13” 225 rr spring on top - IN SD

[@jaynealgofast]

Thanks

[@danamcintyre3565]

In the hot mod or b mod with spring on to center it says it has to be welded, I think that if there was a spring purch what if that maid a spring purch that was free so as the rear end loaded and unloaded the spring would stay neutral ?

[@jaynealgofast]

Rules are hard some times

[@jeffwooton7138]

Good info to have. I'm limited to springs on top here in Texas. But, there could be a "slight" fabrication error on the RR mount. 🤔

[@jaynealgofast]

Right on

[@shanehowell4935]

We have not covered how important the color of the spring is and if I have a black spring, can I pair it with a brown colored coil over?!?! My wife says that black and brown do not go together...🤷

[@jaynealgofast]

Your wife is correct.

[@noahbitz2878]

In my area in MN it's definitely more popular to have the spring in front vs on top in a B mod

[@jaynealgofast]

That is what I have seen too.

[@jamieandreasen6989]

In my area of Iowa in aUSRA bmod spring behind the housing is much more popular. I ran a 13" 225 on a slider behind the housing.

[@jaynealgofast]

I see guys like Kelly making that deal work in that area.

[@adamnix3591]

We have run a 175 in front on a grt a mod. Looking to switch to a 225 for this year. What are your thoughts on left to right location of the 4 bar links for indexing? Mark Bush had recommended running the rr top link pointed to the left at ride hight so you are always indexing into the spring as the car rolls.

[@jaynealgofast]

This is a popular belief right now on RR upper bars, need to make sure the bar toe is never going into bind as it is moving. GRT has been a car that would have a 1.250” upper bar toe in it and lower bar not so much. I always thought in the back of my mind if that much movement on the rr was good for the car and driver. But you know if it works well in the mud it must be great.

[@adamnix3591]

@@jaynealgofastthanks for the info

[@satan6660384]

North Dakota IMCA b-mod 13" 225 spring

[@jaynealgofast]

Thanks

[@CinemahEdits]

13" 225 infront on coilover, wissota a mod in canada

[@jaynealgofast]

Thank you.

[@Lynchracing54c]

I run spring in front on a coilover on a ump pro mod. 200# 13in.

[@jaynealgofast]

Thanks

[@cooperweis4158]

Jay is the man!!

[@jaynealgofast]

Thanks

[@ThaSquirrel19]

🤣🤣🤣 proceeds to sneeze

[@jaynealgofast]

Thanks, will do.

[@441levi]

I wanna be in on the group! Lol

[@jaynealgofast]

Come on in and be a team member.

[@JamesThibodeaux-g7l]

A mod spring in front 230/250 shaft down in Nevada

[@jaynealgofast]

Thanks keep doing good work.