Couple of 40 Q's (suspension)

[40 lover]

1) im considering a 60's springs conversion, unsure of whether to do just the rear or do back and front. Also to add i have a bent front leaf from an inverted shackle. what are your thoughts??

2) also considering a shackle reversal, is this really worth it, i've heard rumours of bad road handling. your thoughts again??

cheers

[bad_religion_au]

60 is easiest on the rear front can be interesting.

your rear springs and front springs are the same length, so you can use your old rears on the front to replace the twisted one.

[shorty_f0rty]

WICKED on this board has had some major mods done to his suspension on the 40..

I wonder if he'd mind sharing the specifics of these mods on here? I vaguely remember something about 75 series gear and a rear hanger reversal too..

[40 lover]

WICKED on this board has had some major mods done to his suspension on the 40..

I wonder if he'd mind sharing the specifics of these mods on here? I vaguely remember something about 75 series gear and a rear hanger reversal too..

C'mon WICKED fess up!!

yeh i know the whole deal with reversed hangers and all that...

cheers

[DIRTY ROCK STAR]

mate just give ben a PM hes pretty helpful.

if i were you, i wouldnt worry about 60 springs... buy 60 diffs and get the springs, brakes and the extra width all in 1 hit!!!!!

i wish i had....

[40 lover]

mate just give ben a PM hes pretty helpful.

if i were you, i wouldnt worry about 60 springs... buy 60 diffs and get the springs, brakes and the extra width all in 1 hit!!!!!

i wish i had....

but im getting the springs for free so all im paying for is the labour if i have to pay anyone to do it

[WICKED]

WICKED on this board has had some major mods done to his suspension on the 40..

I wonder if he'd mind sharing the specifics of these mods on here? I vaguely remember something about 75 series gear and a rear hanger reversal too..

C'mon WICKED fess up!!

yeh i know the whole deal with reversed hangers and all that...

cheers

ok i have Toyota 75s spring packs with the load leafs removed fornt and rear. they have been reset and arched a fair bit to fit the 40s mounts, i hava flipped the rear shackel to fit a longer main leaf. my front shackel inveret from time to time, but that is to be expected becasue of the massive arch in the spring's. that can be sovled by anti-inverstion shackels or a shackel reversal (not sure witch one yet), i run Rancho RS5000 shocks up front (just for now) and Hilux long travel in the back on modifed mounts. my suspension does not work too its full capablity becasue i have stanard rim's, when i flip or back space them it'll work so much better.

My suspension has been done by Scot Dunlop at:

Superior Springworks Toowoomba
46343666

Good work, good price's, Great Staff!

any thing else i can help with??

[WICKED]

mate just give ben a PM hes pretty helpful.

if i were you, i wouldnt worry about 60 springs... buy 60 diffs and get the springs, brakes and the extra width all in 1 hit!!!!!

i wish i had....

but im getting the springs for free so all im paying for is the labour if i have to pay anyone to do it

don't bother dude just do the 75s stuff it'll be a little bit more $ bit in the long run cheapper cause you'll have good suspension that'll fit 37 (i can fit 37x13x16 Bogger's)( you'll need to cut the rear gaurds for that but )

[40 lover]

haha wicked you must have an orsm setup, i was just looking through your members, and half of the pics are of you with a wheel up haha

nah ill stick with the 60's springs as they are FREE, rather than me fork out some dollars to get 75's

[40 lover]

but is it worth putting the springs in the front as well,

and also what are everyone's opinions on shackle reversal

[WICKED]

haha wicked you must have an orsm setup, i was just looking through your members, and half of the pics are of you with a wheel up haha

nah ill stick with the 60's springs as they are FREE, rather than me fork out some dollars to get 75's

yer cash sucks don't know much about 60's myself.
yer that's why all the Woomba Crew call me Bad Line Benny, cause I always pick the bad line and end up with a least 1 wheel in the air but it's so much more fun that way

yer do the shackel reversal, do it

[40 lover]

haha yer i agree its fun lifting wheels

have you done a shackle reversal on your's wicked.

what the pro's and cons of it????

cheers

[40 lover]

anyone got anymore tips or advice??

cheers

[WICKED]

haha yer i agree its fun lifting wheels

have you done a shackle reversal on your's wicked.

what the pro's and cons of it????

cheers

no, no i havn't but an really concedering it.

the diff travels up and down easyer, cause it is not being forced to move forward over the object. so i asume it would make road driveing softer and smother. as for steering just get a wheel aligment and as them or a springwork's if there is any drama's, my 2cents

BLB

[bad_religion_au]

problem with the shackle reversal is that on droop, your driveshaft may come apart easy

[Reddo]

problem with the shackle reversal is that on droop, your driveshaft may come apart easy

That’s why you either place a spacer in there or get a new shaft made up, and it doesn’t have to be balanced because its not a constant. When you put a shackle reversal in there, you can also swap the spring around to gain some more approach angle . However, I think that you will find that the 60 leaf spring eyelets are actually a lot bigger than the 40 ones and this is one of the reason why i didn’t do it because I didn’t want to chop the hangers off a second time. So i kept the 40 main leaf and created a mixed pack of springs, which are working well atm.

[bad_religion_au]

problem with the shackle reversal is that on droop, your driveshaft may come apart easy

That’s why you either place a spacer in there or get a new shaft made up, and it doesn’t have to be balanced because its not a constant. When you put a shackle reversal in there, you can also swap the spring around to gain some more approach angle . However, I think that you will find that the 60 leaf spring eyelets are actually a lot bigger than the 40 ones and this is one of the reason why i didn’t do it because I didn’t want to chop the hangers off a second time. So i kept the 40 main leaf and created a mixed pack of springs, which are working well atm.

they are bigger, but they are the same size as post 1980 fj40 spring hangers. so if you got a 1980+ 40 60 series stuff should fit

[Reddo]

they are bigger, but they are the same size as post 1980 fj40 spring hangers. so if you got a 1980+ 40 60 series stuff should fit

Ahh okay, because my 40 is 78 and that would be the reason why they dont fit Are 75 series the same size?

[40 lover]

my model is an 82 BJ42 so by the looks of it it'll be fine

ok ill consider all of these things and keep youse posted!!

cheers everyone

[bad_religion_au]

they are bigger, but they are the same size as post 1980 fj40 spring hangers. so if you got a 1980+ 40 60 series stuff should fit

Ahh okay, because my 40 is 78 and that would be the reason why they dont fit Are 75 series the same size?

99% sure that any leaf sprung cruiser made after 1980 (or 79???) are similar size. so for us pre 79 cruisers, it's 45 leafs or 55 leafs(although their a slightly different bushing size again, but i haven't noticed a problem on the rear of mine)

but then again, there 20 year old landcruisers, somethins just don't make sense.

like a 1975 cruiser i know of with semi floating rear, coarse spline cv's with vented disks, and 60 series sized springs, with wierd small bushings...

[kranked_dirt]

bad_religion_au wrote:

Reddo wrote:

problem with the shackle reversal is that on droop, your driveshaft may come apart easy


That’s why you either place a spacer in there or get a new shaft made up, and it doesn’t have to be balanced because its not a constant. When you put a shackle reversal in there, you can also swap the spring around to gain some more approach angle . However, I think that you will find that the 60 leaf spring eyelets are actually a lot bigger than the 40 ones and this is one of the reason why i didn’t do it because I didn’t want to chop the hangers off a second time. So i kept the 40 main leaf and created a mixed pack of springs, which are working well atm.

they are bigger, but they are the same size as post 1980 fj40 spring hangers. so if you got a 1980+ 40 60 series stuff should fit

so does that mean if i have an 81 model 40, 60 series leafs will bolt straight up??? (my powers of deduction are amazing!!)

If so my problems are solved

[bad_religion_au]

should do.

[40 lover]

ok sounds good everyone, looks like it should work alright...

ill have a go and see what it turns out like

cheers every1 that posted

[bad_religion_au]

should do.

but you gotta take into account the extra spring length and moving your axle (move rear hanger back/ longer shackles whatever)

[vraamm]

So i kept the 40 main leaf and created a mixed pack of springs, which are working well atm.

mixed leaf pack eh
can you tell more?

[kranked_dirt]

bad_religion_au wrote:
should do.


but you gotta take into account the extra spring length and moving your axle (move rear hanger back/ longer shackles whatever)

cheers mate, i think i'll knock up some extended shackles, thanks for the info.

[shorty_f0rty]

lads..
just letting you know I'm seriously looking at doing the following mods:

replacing 2" lifted 40 series (84 model) springs with reset, stock 60 series springs from an 84 model 60 (removed load leaf and spring clamps replaced with spring retainers - ala OME)
no rear hanger reversal due to current shackle length if i can get away with it. I'm currently running 60# bushes so it should be pretty straight forward.

At the moment I'm just trying to organise measuring everything up. to do that i will look at measuring the following:
- run straight edge from eye to eye then measure to center bolt that is camber height (does this help govern how much lift you'll get?)
- then measure eye to eye
- and eye to center bolt

I'm hoping that as the 60# springs aren't as long as the 75's that I can get away without extending the tailshaft or the rear hanger reversal.

Again, i'm not sure if i'll need to do both or just th rear for the moment. No doubt I'll need to confirm that my shocks aren't limiting the droop once the springs are replaced..

whats peoples thoughts on this? Any pro's / con's from those that have done it before? Any gotcha's that I need to look out for?

Cheers!

[40 lover]

Looks to me like you know all about it and are pretty right about most of the things you said, although i dont know about the tailshaft lengths and whether you will need a new one. Its worth looking into though.

cheers

[shorty_f0rty]

Looks to me like you know all about it and are pretty right about most of the things you said, although i dont know about the tailshaft lengths and whether you will need a new one. Its worth looking into though.

cheers

Well.. I have kind of deduced from this info:

couple of questions

is the spring pin on the rear springs of a 60 centered?

is the spring pin on the rear springs of a 75 centered

is the spring pin on the front of a 60 centered?

If you mean, does the pin sit in the centre of the spring in relation to it's length (I measured along the curve of the springs to get an "actual length"..... then,

1. No (From centre of spring eye on the fixed end, to the pin is approx 570mm along the curve of the spring)

2. No (From centre of spring eye on the fixed end, to the pin is approx 625mm along the curve of the spring)

3. No (From centre of spring eye on the fixed end, to the pin is approx 555mm along the curve of the spring)

Hope that was the info you were after...

from this thread: http://www.outerlimits4x4.com/PHP_Modul ... hp?t=47911

And from a conversation with Bad Line Benny about his 75series springs being so long that it required an extention to his tailshaft.. and from the quote above.. i figure that it will be an increase over the 40 springs and not quite as long as the 75's, hopefully being a happy medium.

I'm yet to see this in real life though.

Can someone explain "castor" and how this could be affected by replacing springs (particularly in the front)?

Thanks

[shorty_f0rty]

heres my measurements for the springs ive sourced:

Conventions used:

CH : Camber Height
E2Est: Eye to Eye (straight edge)
E2E: Eye to Eye
F2C: Fixed to Center Pin
S2C: Shackle to Center Pin

40# Springs still on vehicle
60# springs unladen
All measurements were approximate
60# springs still have load leaf

Measurements:

40# Front CH: 140mm
40# Rear CH: 140mm
60# Front CH: 200mm (about 20mm diff between R/L sides)
60# Rear CH: 180mm (about 20mm diff between R/L sides)

40# Front E2Est: 1080mm
40# Front E2E: 1100mm
60# Front E2Est: 1020mm
60# Front E2E: 1100mm

40# Rear E2Est: 1080mm
40# Rear E2E: 1100mm
60# Rear E2Est: 1150
60# Rear E2E: 1200mm

40# Front F2C:500mm
60# Front F2C:550mm
40# Rear F2C:500mm
60# Rear F2C:550mm

40# Front S2C:600mm
60# Front S2C:550mm
40# Rear S2C:600mm
60# Rear S2C:650mm


These pics shows what measurements were taken: