Outer Limits 4x4 Board

I've read all about it, but has anyone actually done it?

Talking about the front here too, not the rear.

I know that the 75 springs are 40mm longer than the 60 springs. I have some specs on OME and Ironman springs. Accoding to the info that I have the OME 75 springs are 25mm taller than the 60 springs (same spring rates). If any has done this, did you get the 25mm lift?

Also by moving the diff forward by 40mm will that create any issues? Steering shaft extensions are available, but are there any other issues?

Thanks in advance...............

I have....

Put 75 springs in the front of my leaf sprung GQ ute, it originally had springs the same length as a 60series. The 40mm helps. It flexs like this now....



Shackle is 45deg at ride height

Cool! Did you get lift out of the new springs at all?

Did you relocate the axle?

Sixty's Guy wrote:Cool! Did you get lift out of the new springs at all?

Did you relocate the axle?

Yes the springs were for a 2 " lift, so thats about what I got, however as the shackles on a 45deg angle the lift will lift will actually be less, but not a lot. I didn't relocate the axle, because the 40mm is actually in front of the axle, meaning it won't change the location of the diff.

Cheers

I've got my measurements A about Face then, I thought the +40mm was to the rear of the spring.

I'm trying to work out if the 75 springs have more camber than the 60 springs. According to my Ironman info the 75 springs have 5mm more camber than 60 springs. According to my OME info their 75 springs have 25mm more camber.

im doing this mod aswell ,got some springs just need to fit them the front springs are suposed to be longer in the front half which gives you the better shackel angle ,and the rer springs are nearly 100mm longer in the rear half but the diff will stay in the same spot . im hoping to have mine fitted this week some time and hope the rears will give some sort of lift too.

WALKS wrote:im doing this mod aswell ,got some springs just need to fit them the front springs are suposed to be longer in the front half which gives you the better shackel angle ,and the rer springs are nearly 100mm longer in the rear half but the diff will stay in the same spot . im hoping to have mine fitted this week some time and hope the rears will give some sort of lift too.

Awesome, let me know how you go. According to my research the rear 75 springs will set you diff back about 40mm. The 'rear' of the spring is about 65mm longer. Also these springs should actually drop the suspsnion by about 20mm (if you originally had a 2-3" lift).

BTW any pics of your rig now......................

the mesurements i got from the latest ironman book said the center pin is in the same spot +-5mm
when i bought it

2"body lift +37"s

2"body 2.3/4"shackle lift 37"s

i only wanted 2" shackle lift but it lifted it nearly 3" hopfully when i fit the springs i can cut the shackles down on the front ,but i think the rears will still need to be longer because of the length of the springs .

just found another one 37"s on stock 60

!! Are you going to be able to turn that thing!

One of the local 4wd shops here has a 60 on 37z. It has a Belton 4" lift, 2" bodylift and plent of steel cut from the guards.

Hey Gorilla, did you put on longer shackles as well?

Sixty's Guy wrote:Hey Gorilla, did you put on longer shackles as well?

Yes mate, originally i did, they were home made for 2" lift and weren't cross braised, however, i have since removed them and now have much better shackle angle. I didn't really want the height, 2" is plenty for me.

The above pic uses standard shackles, 2"parabolic springs to suit 75 series and 37" iroks.

You can see in WALKS post the difference in shackle angle between standard shackles and extended shackles.

I did have extended shackles, but I took them off. I was wondering if they were necesaary with the longer springs.

Sixty's Guy wrote:I did have extended shackles, but I took them off. I was wondering if they were necesaary with the longer springs.

No, shouldn't be necessary, install the 75 springs and if the shackle angle is more than 45 deg then install the shackles, but from what I've seen of 60s you should be ok.

Thanks for that. When I get around to doing this I'll try without the shackles first. I don't really want extended shackles.

hi guys sorry for a dumb question.....but when you use the 75 series springs in a 60 is it the front one or the back one you use out of the 75??

Nat

Front 75 springs into front of the 60.

Hey Walks, have you done the spring change yet?

nah sorry dude been real flat out at work and had 2 days off with gastro,and had to fit a second alternator for a 12volt system (truck is 24v import) im hoping to get them in this week some timeand i will let you know when they are installed.

ive also got some 32"pro-comp adjustables to go on aswell so i have to fab some shock hoops for the front and some new mounts for the rear too,

putting in 75s rears in the rear tomoz will let you know how it went

Hi fellas do you put longer shocks in to alow for the extra travel.
Also dose it take the harshnes of the old suspension away.

Thanks.

fitted the rears in on saturday (in the rear ) but had to remove them they pushed the diff back about 2"and the shackle angle was just past 45degrees (my shackles are 9"hole centres on the rear )i would of had to cut the front spring hanger off and move it forwards 2-3" to make it work .they also lifted the rear about 2.5 roughly.

what is a good shackle angle ?? i thought the angle was pretty good for down travel but prob wouldnt hold if i loaded it up ,if i moved the front mount forwards the angle would be better and i would prob get more height but i just dont know what i want to do .

i wouldnt mind doing a springover but just dont want to have the hassle of changing it back if the police dont like it.

while not entirely 60 series related this might help with your shackle angle question.

The front is nearly at max drop (shock only has about 1/2'' more travel.



This is the other side, with the longer spring I can get heaps more compression right upto the bumpstops!



and this is my shackle angle at ride height




The front springs are 2'' lifted (but now sagged they are old) 60 series rear springs.

Hulsty, how does that ride? The shackles angle doesn't look right at all. The shackle angles look the same flexed up and and at a stand still.

i reckon you need to do 1 of a few things
1) get a slightly shorter main leaf
2) get a slightly shorter shackle
3) put a bit of lift in the springs to increase ride height
4) move front shackle hanger forward slightly

any of those things should get your shackle angle looking slightly better..

also disco your shocks when you flex it up to figure make sure they aren't limiting things

It rides like a short leaf sprung cruiser! The front is softer than the 2'' springs and stock shackles i had. Here is a better pic to compare the shackle angle from droop to ride height. On the compressed side the shackle has the bushes in nearly a straight line one infront of the other parallel to the ground. The angle looks wacky, but really, whats wrong with having it? I'll have lots of down travel when I sort the shocks and up travel is better than stock!. When stock the springs flattened before the diff would reach the bump stops. When I installed the springs, just with the diff weight on I had to jack it up 3'' so the shock would reach!!

i think you need a haircut in that pic chris

tuffsahara wrote:i think you need a haircut in that pic chris

nah mate, its all good