I put my 212 lb. Moroso Trick Springs in the front of my car last weekend and hoped they would settle enough to not require cutting, but so far they've only gone down 1/2". I had a feeling they were going to be way too long, but didn't want to cut them until I was sure.

As it sits, the front end is less than an inch from being completely extended. Considering I need approx. 3" of drop to get my ride height/shock extension travel correct, how many coils should I cut?

The spring's free length is 19" and has 11 coils of .625 dia. making it's collapsed length 7". If 212 lbs. compresses the spring 1", then each of the 10 spaces in between coils compresses 1/10". If one coil is removed, then 212 lbs. compresses the spring only 9/10", so the spring rate would increase to 233 lbs. If I need the installed spring length to be 11" for proper ride height, by my calculations I need to cut 3 coils. That would leave a free length of 14" and increase the spring rate to 275 lbs. My front end corner sprung weight is 700 lbs. which would compress the 275 lb spring 2.5" for a installed height of 11 1/2".

Is this approach correct? I read somewhere that when figuring load rate one coil should be added to the formula, but I can't find that article. I wrote to Moroso about this, but they are extremely slow with their replies.

I thought I would pose the questions here to get some feedback. Any comments are appreciated.