King Coilover adjustments??

I just installed my King coilovers today and I am trying to adjust the ride height to about 2-2.5" over stock height. In the instructions they are they pre adjusted to level the vehicle out of the box. I gave them an additional 3 turns on both sides (2.5 turns = .5" of lift). With the truck on the ground now I am only about 1" higher than stock height. Drivers side is showing 11 threads and passenger side is showing 7 threads. Online and the forums there isn't much information that I can find on the subject, however someone did mention here that over 12 threads the ride quality goes to shit. I'd like to get roughly another 1.5" of lift height out of these coilovers. I don't want to crank down too far on these either. The instructions also mentioned its possible to go another 1-1.5" from the pre set preload, as long as there is a minimum 1" of swing arm sag.

What lift height are you guys getting with the king 2.5s , how many threads on drivers/ passenger showing? I have no additional weight on the front of the truck, stock bumper etc. I also dont know if these come with #650 or #700 springs without special order.

 

Good chance that the springs are labeled for spring rate... Any numbers printed on the coils?

 

Which King coilovers do you have exactly? Part number would be ideal, also what year Tundra do you have?

 

The Kings are KST-25001-143

and it’s a 2020 truck.

thanks for the reply!

 

Got it, so specs on those shocks are:

• Product Compressed Length: 18.147
• Product Extended Length: 25.083
• Product Travel: 6.936

We recommend 3" of droop (at the wheels) from ride height. So our max recommended shock length for those shocks would be: 23.043"

We try not to ever reference lift height numbers, since there are so many variables and ways people measure. We go strictly off the shock lengths and most performance.

 

Okay I will try another adjustment, measuring between ride height and full droop to achieve 3" difference. Thanks for the help! Hopefully i can achieve the 2.5" ride lift height

 

Dont worry about the 3" number, just reference the shock length of about 23" at ride height.

 

Ok awesome I will do that right now.

 

@AccuTune Offroad I've seen a lot of good info coming from you, its great to have a helpful vendor here. Thanks.

 

Happy to help when we can!

 

So just adjusted them to 25”. Is there any adverse problems or issues if I was to adjust more preload past the 25”? Besides rougher ride.

 

Uhm... what? Where did 25" come from? Referencing that diagram I posted above, max length sitting parked should be 23". I highly doubt you are at 25", if you are, you are completely maxed out. See this article for more details & explanation

 

Sorry sorry I meant 23. Just came off nightshift and having trouble writing my thoughts haha!

 

I have Kings on my Total Chaos LT kit. With 7 turns on the drivers, 4 turns on the Pass, I still net 1" less lift than the 2-1/2" Daystar spacer lift I took off. As long as they clear those 37's I'm happy enough.

You can always add 1/2" spacers on top of the coilovers.

Ideally, we should get all the lift we need from the coilovers but after having done multiple Toyotas on coilovers, that has never been the case for me. Sorry for the buzzkill brother. Good luck!

 

Completely different setup than what the OP has.

Strongly recommend NOT doing this, especially with some nice King Coilovers.

Lift height is restricted by other things than just the coilovers. All of these shocks manufactures have done this for a reason. If the OP wants more lift than what he can get with those coilovers, we may be able to convert them to an Extended travel coilover to gain some more height. If a super tall lift is what you are after, drop bracket kit is what you would want. Performance vs Aesthetics

 

I realize its different. Thats why I mentioned my past lifts with extended, non-extended as well. Spacers are not ideal I know but its a better option then cranking the coilovers to the point of a rock hard ride.

I agree, a monster lift is drop bracket territory, but to Op's point, if a manufacturer says 2-1/2" outta the box and you get 1"........

Hey, your the shock expert, no argument here. Not here to engage in a pissing match. Many options and opinions. Just my experiences to let Op know his situation is not unusual.

 

Looks like the standard coil on that model is 600lbs, sounds pretty soft for a truck this heavy, I'm surprised they don't start at 650. After reading info on a few sites it looks like 2" higher than stock is the max recommended ride height.

Cranking too much can lead to a harsh ride but not really for reasons people think. It will remove your droop, without downtravel you'll be riding on a rigid suspension since it has little or no room to move down. Your control arm angles will make alignment a nightmare as well.

I wouldn't go throwing spacers on top of coilovers, that throws geometry off. You shouldn't have to mix lift methods that way.

@Cubo55 How exactly are you measuring the before and after height? Have you driven on these coilovers at all yet? Have you had alignment done?

 

Ah no worries, just trying to clear up some things.

Adding a spacer to the top of a coilover will get you more height that is true, however you are now making the extended length much longer. If you don't run an aftermarket UCA or extended bump spacers, you can run into a lot of issues. Also, King is pretty good about not claiming a specific lift height with their shocks so I am curious where this lift height promise came from. Coilover spacer video

Yes they are a 600lb spring, but 16" long. For stock weight, we actually drop the spring rate to 16 x 550lb or even an 18" x 500lb. It's very common to over spring these trucks.

 

Interesting! I’m new to coil overs in this application, so am curious if mine will be what you consider “over sprung”. I’ve got a set of 2 1/2” coming from ADS, which are sent with 700# Eibach springs. They use 650# unless it’s a Crewmax, or if you have a heavy bumper. I have a CM with stock bumper. Do have dual batteries up front though...

 

I have the extended length kings and they settled quite a bit. So much so that after my first alignment I adjusted the drivers side coilover up 1/2” ride height, didn’t get an alignment for 2 months because my truck was parked most the time. When I did get an alignment the drivers side was actually spot on and the passenger was way off. So they settled at least 1/2”. I don’t really care about ride height, but now the rear end looks way higher because I added 1.25” lift shackles, and I want to remove the overload lead and add a deaver mini pack, but at that point the rear would be way too high.

 

Hey @Cubo55 & @ultra1988 - just want to provide an update. My Kings settled to the point where I had 1" of overall lift . Spoke to a few shops, and they all suggested swapping out the King 600lb springs for 650lb springs. I had a local shop swap them out with Eibachs because as he suggested Eibachs hold lift much better than the King springs. After a 15 mile drive home and bombing over a bunch of speed bumps to cycle the suspension. I still measured a 1-1/2" gain in lift than previously with the 600lb King springs. I agree with the Eibachs being a better spring, because now the drivers side is 1/2" higher with the same adjustment. I was warned that the ride will be worse with the 650lb springs but I didnt notice much or any difference. Hope this helps.

 

I’m running a shim on top of my fox coil overs been 6 years no issues rides great on and off trials butter. 3” total lift. 700lb coil on mine.

 

I ran my Eibach 650s for just under 2k miles. Right around 1k miles they settled about .33"-.5" lower than their initial setting. It wont happen after a 15 mile drive FWIW.

 

Mine have settled more also. My main concern is alignment, should have just gotten the lifetime Firestone one.

if these springs are sagging/settling, then they are essentially losing their rating. So they arnt 600 pound springs anymore. Maybe the answer is a longer 600 pound spring instead of a higher spring rate.

 

I still say these trucks need a 700lb spring. Bare minimum 650.

 

Heavier springs may be necessary for heavy off roading or when there’s extra weight on the front. But I’m pretty sure accutune will even put a 550 spring in the front for a tundra, just longer.

 

Just weird to me these trucks are heavy. I mean my Tacoma had a 600lb spring on it. I mainly daily drive my tundra and some logging roads with a 700lb spring it holds the lift hasn’t moved hardly at all and rides great not stiff or jarring.

 

If the max length of the shock is 25.083”, wouldn’t you want the ride height at 22.083” so you can achieve 3” of droop?

 

Wheel travel is greater than shock travel.

 

Right. Thanks.