Weight to Coil Spring Rate

I don't know. I was just talking shit just because. Lol.

 

Crank those coil overs some more. 3/8 to 1/2 inch of change on the spring's collar will take care of that 1" difference in ride height.

If you're constantly on the bumpstops, look at changing shock valving (more compression). I mean, you could go to 700# springs, but you can accomplish the same thing with a little bit more preload.

And I would swap to 2.5 C/Os before I would spend any money on springs for your 2.0 C/Os.

 

To be totally honest, I'm not even sure that 2.5s would even fit in there at this point.



If I crank it more than what I currently have, wouldn't I potentially be running the possibility of creating a coil bind situation at full stuff? As it stands, my springs are 12.75" tall with how they are cranked. That is what I am worried of. I don't want to rob any travel out of the shocks, as I used just about all of it in full stuff situations. Valving is not an issue as of right now. They are valved on the heavier side, 15 compression for sure.

Matter of fact. Here is a picture of it nearly stuffed some wheeling trips ago. Spring was approaching bind.

 

you can calculate how much travel your spring has by measuring the thickness of each coil and calculating block height (height of spring at full compression), and take that away from full extended length. If the difference is more than your shock travel, then you're good. If it is less, then you're gonna have coil bind.

 

Do you mean the difference in gap between each coil? So lets say there is a .5 gap in height between each coil...?

 

nah, measure the thickness of the coil, then multiply that by how many times it coils up the spring. That should be your block height. then minus that from the length of the spring without load.

 

11 coils and 1.25984" for the coil thickness.

14-13.85824

.14176"?

Does that sound right?

 

no

 

Okay @blackhawke88. I got the spec straight from Eibach. Block height is 7.02" and travel on it is 6.98" in it's 14" unloaded state. Right now it is down to 12.75" preloaded.

 

So, I think you have 5.75" of travel until your spring binds. How much shock travel do you have left till bump?

 

PS @12TRDTacoma You can easily fit 2.5 coilovers in there. Just do that and you'll have way less issues valving.

 

You are not using all 6.98" though, you need to use the inches of shaft used in the calc.

 

yup 5.75". if you're running a shock with more travel than 5.75" you'll get coil bind at full bump

 

I use 5.5" out of the 6.5" of shaft before bump out.

I don't have any valving issues or fade/ overheating though. But if I do switch to a 2.5 I am somewhat worried that the UCA will strike the coil springs like I have seen on other trucks in the past.

Yeah I was aware of that when I was posting it. I just wasn't sure where that would come into play in the equation.

I use a total of 5.5" of shaft travel before bump allows a full uptravel stop. So theoretically, I could run another .25" of preload before I begin to experience coil bind it sounds like.

 

Then you turn the coil

 

You can always set yourself up to bump a little lower than you are to prevent coil bind.

I would not spend money on a 2.0 C/O. Upgrade to a 2.5; go with a 650 or 700 from the get go, and be done with it.

 

wow dude, change to a 2.5 mine fit fine and you dont have anything around the actual coil to be an issue.

Honestly im shocked you're running 2.0s with how you drive.

 

Thanks for the info guys. I got what I need here.

 

So the Fox 2.5 Factory series extended travel w/ resi comes with 600# spring (got that info straight from the factory and I just ordered them). I let them know that I have a tube front bumper and glass fenders, with only IFS skid and LCA Skid. He said 600 is fine and if I had a plate bumper and/or winch, a higher spring would be better. (and its a 4x4 doublecab)

So would you (and others) say fox is wrong in setting up their 2.5's for tacomas with a 600# spring? I am genuinely asking and not poking to prove any points . Just trying to learn more.

 

My Prerunner DCSB with a Pelfreybilt Hybrid bumper and some lights was running a Fox 2.0 with a #600lb spring and it was wayyyy to light. Combination of valving and spring weight had my truck constantly bouncing bump stops. I ran the compression adjusters at like 3-4 all the time and 8 when offroad