Soft right front spring

[lovinlatemodels]

Let me rephrase is your RF spring a 10" or 12"

[racin29]

are you using a drop shock mount rf lower? if so that is probably the reason the rf is preloaded. the shock is fully extended at ride height and when you jack the car up it can not drop to unload the spring, if you don’t want the spring preloaded and have the clearance try adding a 1" extension to the shock.

[dualdj1]

ego is right you can NOT change left or rear % without moving lead. you can only change your cross % and lr bite with weight jacks.

yeah that's what i was thinking of, sorry for the confusion. fixed my first post since my brain overloaded

[HOTDOG]

Not trying to change % just seem like I have turn the ajuster down to far. The dropped lower maybe it . Also it's 12" spring .

[dualdj1]

in that case you may just need a longer spring.

[jedclampit]

You can and Definitely will change your left side % if you don't keep the rear end laterally in the same position under the chassis!!
If rear end is to the left of where it was before the coil over adjustments,left % will be lower, and higher if to the right of original position.

This is an easy way to tell if the lateral rear end alignment has changed, and to get it back in place w/o measuring.

[Matt49]

A few comments:
1) static spring height won't change the amount of pre-load required to get a certain ride height or the amount of pre-load at a given ride height.
2) If you are having to jack the springs so much that it is moving the rear end enough side to side that it changes your left side %, something is wrong with the car.

Starting at baseline ride heights, camber, and stagger numbers (front and back), your cross weight (bite) should be within reason so that it can be adjusted for with no more than about 8 turns on the LR and MAYBE 2 or 3 turns somewhere else if necessary. If it isn't, something may be bent on the car (e.g. control arm, spindle, birdcage, shock, the frame itself, who knows)
We have ran and no of many who have ran much softer than a 400 RF spring and not had this kind of problem. What kind of car is this? Maybe someone else with a similar car has had an issue like this but I haven't seen a MasterSbilt or Rocket have this kind of trouble getting percentages right. 12 inch spring is pretty standard on the RF. Going to a 14 inch spring will give you more thread below to play with but I'd be worried about a larger problem somewhere. Just my 2c.

[jedclampit]

To the original poster, what make,model and year is this chassis?
What are you using for a ride height?
Where are you measuring it?
What is the stroke length of your rf shock?
I think you may find the root of your problem is what you are using for a ride height, or where you are measuring it, or very possibly you have a a 6" stroke shock.

I have seen a 6" stroke shock used on the rf for increased travel, that required a lot of preload, even with a 400# spring.There is a better way to get more compression travel, but it can be done this way.

If someone 'reworked' the rf coilover mount, that may be the problem also.

I hope this isn't another old Masters wide combo car!

[HOTDOG]

It's copy of 05 masters with I think 18 5/8 lower right front 7" shocks no extensions 3 7/8 ride Ht.