hilux springs on fj40

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anyone tried using rear hilux springs on an FJ40? as far as i can tell they are approx 6" longer than fj40 springs and a little narrower.....plus they are a LOT easier to find than fj55 springs...
 
I think stock Hilux springs will be too light for a 40. You may be able to bastardize a couple spring packs and add a couple leaves to get the propper spring rate. The narrower spring will require more leaves to achieve the same spring rate. Also the eyes will be different width, which could be shimmed, might have a different pin diameter too which isn't too hard either.

I used a set of 45 springs that I got cheep and modified, but they are harder to find than 55 springs.... I think 9 inches longer than stock. They ride soooo nice.

Let us know what you come up with.
 
i'm going to try it on the back, i do agree that the front weight is too much for those springs...
 
i'm going to try it on the back, i do agree that the front weight is too much for those springs...

The spring rates and weights are not alot different from front to rear. The rear is lighter but not a huge amount. Look at the stock springs or any aftermarket springs. The spring packs are the same number of leaves and the arc is very similar. When I installed the 45 spings I had to put an extended shackle in and I lowered the spring mount too (also one more leaf). Didn't help the departure angle any... It will be alot better when I spring it over though. I'm sure you could do a search to find out more on spring rates to help you estimate where you will end up. Let us know how it goes.
 
I tried this years ago with 4 inch lift springs for a 85 mini, the back of my cruiser ended up setting lower than it did with stock springs, not enough spring to carry the weight, you may be able to add leaves to help it out.

Good luck!
 
The spring rates and weights are not alot different from front to rear. The rear is lighter but not a huge amount

from my personal experiece i can't agree with this, but i guess each situation is different but on my fj40, since i've done the spring-over i had to put an add-a-leaf in my front packs to keep them from inverting, and they flex awesome in the front, i wouldn't change a thing there....in the back i've taken out leaves and it flexes ok but not even close to the front end....my rig is stripped down, i mean there's nothing in the back to put any weight on the rear end to compress the springs
 
from my personal experiece i can't agree with this, but i guess each situation is different but on my fj40, since i've done the spring-over i had to put an add-a-leaf in my front packs to keep them from inverting, and they flex awesome in the front, i wouldn't change a thing there....in the back i've taken out leaves and it flexes ok but not even close to the front end....my rig is stripped down, i mean there's nothing in the back to put any weight on the rear end to compress the springs

I do live in the rain for 10 months of the year so I usually have a hard top on and prolly have a fairly heavy truck......

What does a mini truck weigh?
 
Mini springs are under strength for even a mini. Unless you use it like a buggy and not a truck. Far to lightweight for a '40.

Unless you are talking about about putting then under a stripped down buggy (with an anti-wrap bar too), this is a bad choice.


Mark...
 
this is an offroad only rig, stripped down to the bare minimum....and i do have a jk customs traction bar.....i realize that i will have to add a couple of leaves to the mini truck springs, no prob.
 
I think fj60 springs are the way to go but take a little fab work. But you will get a better ride out of them because they have a rubber insert.
 
I say try it. My 40 weighs 4400 lbs ready for the trail. My buddies Mini-truck weighs 4300 lbs ready for the trail. ...pretty close in the weight department.
 

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