bj70 soa swap

[davemeasures]

Enyone done a soa swap on a bj70 look at doing to mine cheers

[mudlva]

Hay dave. Long time...
Soa just wil make ya wagon fall over.

Big wheels and chop the guards will keep cog down and as soa doesnt affect diff heights you will still get rut bound.
Bigger wheels will sort that problem.

[callum007]

I did many moons ago... Like that other intelligent fella said. YOU FALL OVER.

But if your clever about it, it might be ok..

[davemeasures]

All readt got 35s an a 4 inch lift was just thinkn about it mite try and find some cheap coilovers an put in front yet

[mudlva]

What are you trying to achieve?

Body lift?
Chassis clearance?
Just want to get her a little higher just cause you can?

The guys that coiled 40's with out fitting 6 to 8 point chassis mounted cages found that the wagons handled terribly.
Some thing to do with leaf spring chassis have a built in allowance to move and twist to assist in wheel articulation.

My 60 used to twist that much that the tailgate (when it was there) used to bind up and not open if i parked or got stuck on axle twister holes or rutts etc.

Coil chassis are a lot more stiff and vertually use the suspention to do all the work.

Coils into bushys work mainly due to the cage resisting the chassis twist.

40s and 70s are very similar in design and width.

[davemeasures]

Its a trailerd truck now only lasted 3 weeks being road worthy the front hangers are taken a hammern with the coils ud loose the low down over hang still have the winch hangn out but il be push it bak when rad goes in the back

[mudlva]

Ok now im seeing where you are heading.
Coils and radius arms will get rid of the left issue.
All good.
See how it travels in the bush and install full cage if required.
What arms are you thinking of?

[davemeasures]

Itl b getn a cage 1 winter wen the last few windows fall out not to sure what arms il use
I did hav some custom made 1s in shed some
Were

[derk]

its ok for your bush hack but you wouldn't want to do it to a road going truck, you need to get the height back down with the SOA or you'll spend more time on your side than on your wheels it takes a bit of pissing around to get the right combination of saggy springs and shackle angle to get the suspension at the right height and articulating well, its all more money but a 60 series axle swap at the same time pushes the width out to help combat the narrow track and high COG you also have to watch out for axle wrap and snapping pinions with saggy flexy springs so you might want to look at a track bar for the rear end

[davemeasures]

Iv got some coils in the shed mite just put them in it

[silveradoman]

best time for the safari diff conversion and sell land cruiser diffs. make it wider and stronger

[mudlva]

Na then theres drive shaft mating issues.
60series will make it easy and drive shafts etc all work easy.
He will need to run c.m. even with y60 gear so use toyota plus arb plus c.m. cvs sorted.

Haha that was easy writing up $5k of gear....

[silveradoman]

yea i see what your saying with driveshafts. but lets be honest landcruiser diff is a sideways move and driveshafts don't take long to make, 2hours for both units by an engineer.

[mudlva]

Not wanting to get into a shit fight of y60 v lc 60s
Cvs same size
Lc 9.5" front v y60 8.3/4".

Y60 is approx 70mm wider so same width as lc80

Running open diff on both oe cvs will be fine
Run a front locker and neither will last for long.
Lc60 ran a push pull steering link tie rod set up and reasonibly high
Y60 ran a left hub tie rod link with a very low tie rod link.

If you happen to lunch a lc60 rear you can pull the head out of the front and fit it into the rear diff. No can do for y60
Graft a lc60 front nugget into a lc80 and with the way bigger cvs will handle a shit load more abuse than both lc60 and y60 combined.

Apart from width there is bugger all the differance between the two with pros and cons on both units.

Fyi the y60 rear d.s. has approx 10d more angle than a lc 60 and 80
Y60 rear uj is larger than lc60.80
Y60 front uj is smaller than lc60.80
Y60 rear arms are same texture as speggetti lc80 are shit load larger and longer which helps with anti squat.
ANYWAY BACK TO TOPIC

[davemeasures]

Prefer the cruiser diffs over nissan the last safrai i had was all ways brakn cvs and it was never raped like the 70 is only thing iv broken so far is pto yoke and the winch cable it had on it

[silveradoman]

on my 89 bj70 i used a 80series rear head in the front diff to move the pinion away from the ls sump(still notched sump). i was looking at the truck the other day i recon the truck could do with being a bit longer +60 each end. trim to suit. some thing to think about move stering box or orbit steer though.

wish i swapped to nissan diffs not just change ratios,my 5cents

[davemeasures]

It was like brand new cond a month ago haha now the doors only open from inside and all tha glass is missn or crakd haha this winter il be cutn the roof off and cagen it an coil overs in front depending if iv got a job by then still got a wof an reg on it not that its in eny state to be driven on the road

[mudlva]

Pretty certain that ive got a 60 front houseing kicking around.
Will need to strip all your gear off the 70. Ie hubs cvs etc.
Will look for a long side axle as well.
I had a ff rear but think i sold it....will have a hunt as well.
Will pay to convert to discs in to rear at the same time.
Drums suck...
Keep ya eyes peeled for a 80 steering box. Its a good upgrade

[charo249]

When i did a Soa conversion on my old truck i put softer springs in and got them reset flat so it was about 4inches higher than factory. Gained alot of clearance under the axles especially in ruts.

[davemeasures]

The spring in it a ferly flat now thats why i was thinkn of it