Been searching for a few days and haven't gotten a solid answer so figured I'd start a thread. I'm upgrading my potentially stock (I don't know if they actually are stock or not) coils to the Moog 81108 coils for a FJ. The game here is I'm trying to keep it under 3" to avoid all the additional mods at the moment. Here are the details:

2008 V8 Sport
Demello front bumper ~150 lbs
No spacers in the front.
OEM coils are 13.58" tall with a coil rate of 580 lbs/in
Moog 81108 coils are 14.47" with a coil rate of 660 lbs/in

.89" coil height increase and 80 lbs/in coil rate increase.

What setting should I put my Bilstein's at? My math shows:
0" + Moog 81108 = .89" lift
.85" + Moog 81108 = 1.75" lift
1.75" + Moog 81108 = 2.64" lift
2.5" + Moog 81108 = 3.39" lift

I'm sure this would definitely be influenced by my Demello bumper and the fact it's a V8. Those are the two factors I don't know how to add to the equation plus the higher coil rate.

I saw someone else mention they put the 81108's in their V6 at the .85" notch and they got 2.5" out of it, so just trying to lock down where I should notch mine.

Trying to do this in one shot so I don't have to keep going back to my buddy's garage.

Thanks a bunch guys

Not sure about those springs, but...

With my OME 884 (590/lbs, 15.35") springs I lost about 1/2" when I added 150lb bumper on my V8. (~2-2.25" of lift after bumper)

I replaced the 884 springs with 885 (590lbs, 15.6") and am now between 2.5" and 3" of lift.

With the higher spring rate, I'd expect a little less droop from the bumper, but not much. I personally wouldn't use the adjustment setting when running a lift springs but find a spring that provides the full lift

Like you said, do it once and do it right.

+1 for this

Thanks for the input, I appreciate it. This is a hold over till I get the loot together for some Icons, so just trying to get rid of some sag I've got going on at the moment. And for $45, I wont be able to complain too much about the new springs once they're in.

If anyone else has any experience, lemme know