Adding forward and side bite

[ambonci21]

looking at swapping rear springs around. we are currently 15" 200 on the LR and 13" 175 on the RR. we are looking to add a little forward drive and add a little side bite. Also hoping that this will help snug the car up just a tad. We are not far off on setup just looking to try something different with spring rate. We are thinking of putting a 16" 175 in the LR and putting the 200 in the RR. Correct me if I'm wrong but the softer LR will unload faster and will get on the bars faster. this should tighten up corner exit right? Also is putting a stiffer RR help snug us up and add side bite?If we swap to a 200 RR should we put in the longer spring or the shorter? Thanks for reading. Happy labor Day!!!!!!!

[xxxmod]

JMO leave your springs alone and move the RR forward for tighter entry and exit

[ambonci21]

we are at about 3/8 ahead on rr

[mcarter815]

Depending on what you're running now, being less aggressive with your LR shock can help with forward bite.

[ambonci21]

I gathering that switching springs is not a great option? I think LR shock is a bilstein 8-2

[CCHIEF]

Perhaps a 2-8 Bilstein?? if it is a 8-2 that likely poses a problem. Bilstein's are rebound-compression, opposite of most manufacturers.

[mcarter815]

I gathering that switching springs is not a great option? I think LR shock is a bilstein 8-2

I'm new to this stuff, but my understanding is that springs just control the balance of the car. If you are wanting to influence the rate of movement on corner exit, you do that with shocks.

[ambonci21]

Chief, you are correct its a 2-7 bilstein. thanks for clarifying that. the one thing I have been thinking about is we set the car with tilt in it, meaning its tilted to the rf a bit. we have very little preload on the rf spring. thinking we are going to switch rear springs and take the rf tilt out so its not pulling the car off the LR as much. what you guys think.

[JustAddDirt]

I would change springs and leave a bit of tilt in car.
What tires and rule packages are you running? You never mentioned any of that info that info would also help us help you.
Ump
IMCA
Usra

[ambonci21]

Just add dirt, Sorry about that, we are running IMCA. like I said we are very close just looking for a little tighter from middle off. I was thinking taking tilt out because last year we started with an 8-2 on the rf changed t a 5-3 and man what a difference with handling and drive off. When I look at pictures from this year, the car is all jacked up on the rf, way more then others. we have had a lot of bad luck with engines this year and getting wrecked but have had a DECENT car every week, DECENT not GREAT. so I am wondering if we have to much tilt. we are about 1/2" lower on ride height then what our chassis manufacture suggest.

[JustAddDirt]

I would probably go with builders recommended ride heights.
Might try dropping lr Lower bar a hole. That will tighten middle off.
I run ump, but I hear a lot of Yantz, imca cars run a pair of 225's on the rear.
I am on a 225 rr and car scotches up very well.

I would try the 175 lr preloaded , and the 200 rr
That should improve scotch and should help car up on bars with the addditionsl preload on lr during.
Are you on a pullbar or lift arm?

[stock car driver]

you want tilt and softening your rr sping will reduce side bite not add side bite

lower your rr lower bar and it should plant the rr more on entry to middle which would be a tightening up effect. also look at j bar adj, but rr lower is what I could use to make my car plant the rr a ton anytime I wanted it to

or stiffen the rr spring if your really wanting to change springs

[stock car driver]

Are you on a pullbar or lift arm?

IMCA doesnt allow lift arms.

[JustAddDirt]

imca

IMCA doesnt allow lift arms.

Now that you say that, I thought I remembered hearing something about that a year or 2 ago.

[ambonci21]

SCD, we plan on stiffening the RR going from 175 to a 200. we usually put the RR lower bar all the way down. Just Add Dirt, how much preload are we talking? We did that on our last car with lots of preload in the LR spring and the car would throttle push bad at times. just wndering what a good starting point. an inch or more? Thanks