80 series axle SAS into a '92 4Runner???'s

[matt flaherty]

So I searched, and I didn't quite find what I'm looking for. I wanna do an SAS on my "new" '92 4Runner, and I'm thinking of using an 80 series axle for the HP third and the extra width. I know I could just buy a diamond housing, but in the end I think the 80 axle would be more than adequate.

My questions are:

Has anybody used leaves on an 80 front before, what interference issues am I looking to conquer?

Is there another hi-steer option besides Slee's kit for the 80 axle? (I can't see paying that much $$$) Or is the factory steering adequate with 38's and hydro assist?

Am I better off simply widening a mini axle (already in my possession) using SKY's kit, or buying a Diamond housing?


The floor is now open!

 

[toyminator]

I don't know this for fact but I have heard the problem with using leaves on the FJ80 axle housing is the location of the 3rd member interferes with where the right leaf spring perch needs to be.

 

[matt flaherty]

I don't know this for fact but I have heard the problem with using leaves on the FJ80 axle housing is the location of the 3rd member interferes with where the right leaf spring perch needs to be.

Hmmm, OK, I may need to outboard the front leaves.

Any other issues?

 

[toyminator]

Also, the FJ80 Axle is 63.5"wide while your 92 4Runner axle is only 58.5" wide. The only rear axles that comes close is a 96-03 Taco/4Runner axle at 60" or the T-100 rear axle at 66.5". The rear FJ80 axle won't work beacuse it uses an offset rear housing.

 

[matt flaherty]

Also, the FJ80 Axle is 63.5"wide while your 92 4Runner axle is only 58.5" wide. The only rear axles that comes close is a 96-03 Taco/4Runner axle at 60" or the T-100 rear axle at 66.5". The rear FJ80 axle won't work beacuse it uses an offset rear housing.

I'm planning on either a Taco axle, or the new trailgear high clearance axle Taco width +2. Either way, it's gonna get a FF kit and/or discs.

Trail-Gear Inc > Axle Housing

 

[tntoyota]

If you can convert to full width with Sky, I dont see why you cant replace the D44 with the 80's.

And for the width, I H8 Width, I like the Aussy/Euro style way of building truck, But!

I once had a hit and run in my driveway, I shoe polished a sort of chalk outline of the tires so that is anything was said I could show where I was parked (I was N8ked and on my porch with my 870 express in 4 seconds, I would have peppered hiz az if I saw him trying sneak away...)

oh, I remember where I was.... I later pulled my 91 fj80 into the same spot and it was so close that all the paint and markings were visible. 91 means less offset rims IIRC.

I dont think (with proper rims) that the offset will be that drastic

 

[matt flaherty]

If you can convert to full width with Sky, I dont see why you cant replace the 80 with the D44.

I dont think (with proper rims) that the offset will be that drastic

I want a nice wide footprint because it's gonna be a family wheeler that my wife will drive too, so I don't want it tippy feeling enough that she doesn't wanna drive it. I think strength wise the 80 front is stronger in stock form than the D44's I might scource, the 80 uses a HP carrier in the front, and I have a line on a cheap one to boot.

But I am considering just going 60's and calling it good, unfortunately I think 60's would be expensive overkill for 38's.

I've seen plenty guys build 2nd gen Runners and use the mini axle, I just don't know if it would be wide enough for my needs. Although I already have the mini axle, and the aftermarket is sure stronger.

 

[tntoyota]

as far as I know, the shaft diameter is the same.

The Hi pinion (NON E-locker) will be a direct bolt in for the mini housing...

I thought, and I might be wrong that the mini Birfields are stronger than the 80's...

So, hardly "width" will make it a stronger axle...

 

[matt flaherty]

as far as I know, the shaft diameter is the same.

The Hi pinion (NON E-locker) will be a direct bolt in for the mini housing...

I thought, and I might be wrong that the mini Birfields are stronger than the 80's...

So, hardly "width" will make it a stronger axle...

I think we're carrying on 2 different conversations at once.

I think that stock, the 80 front is stronger than a D44, just not as tight a turning radius. I just have to wonder how much stress I'd be putting on the knuckle balls by widening the mini front.

The stock mini birfs aren't as strong as stock 80 birfs that much I do know from my research. However 30 spline Longs are stronger than the aftermarket 80 axles available. The HP carrier will bolt into a mini housing with some clearancing at most.

I was not equating width with strength, I was saying it would keep my ride more stable, since the 2nd gen Runners are reputed to be VERY top heavy.

 

[ranger]

Aren't the steering arms on the 80 series axles under the knuckle?

 

[JJS]

I can't understand why you would want to undo a coil-sprung front end with leaf springs. Set it up with coils and link it.

 

[tntoyota]

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[tntoyota]

I can't understand why you would want to undo a coil-sprung front end with leaf springs. Set it up with coils and link it.

Good point, as a po-boy with a skrewed cruiser I wondered how I could get this axle under a ? IFS Hilux.

To me plasma the 80's towers and buckets from the frame.

Weld a box [/ \] on each side of the frame, the difference in frame width from the 80 to the IFS frame and REweld the towers and buckets to the "adapter"

Then just fab for the links.....


But I just might be over simplifying it.

 

[matt flaherty]

I can't understand why you would want to undo a coil-sprung front end with leaf springs. Set it up with coils and link it.

$$$ mostly, that and the radius arm 80 front isn't a very flexy front setup. Then there's always the alignment issues that I'd end up with. While having a well tuned 3 link front is an apealing option it really isn't in my timeframe or budget right now.

 

[bkg]

Hard part of the 80 front end is the steering. Only place to get a hi-steer type kit is Slee, and it's not cheap. In the end, you could probably do a Diamond for about the same price.

 

[matt flaherty]

Hard part of the 80 front end is the steering. Only place to get a hi-steer type kit is Slee, and it's not cheap. In the end, you could probably do a Diamond for about the same price.

Yeah, that's what I'm discovering. I think the width is overrated from what I'm discovering too. The HP centersection will bolt into a mini housing with minimal (if any) clearancing, and I can widen it using SKY's kit, and if I still need more width I can get the wheel backspacing adjusted to fit my needs.

I think at this time, I'll just run the mini axle and see how it works out for me.