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Topic Review (Newest First)
09-02-2019 04:10 PM
lil,yota I don't even know why this is a discussion.




Further more...By the time you stop wasting money on Toyota axles you will realize that you should have been upgrading the won ton stuff.
08-28-2019 10:38 PM
dragrcr65 I have never seen someone who will use throttle until something happens stick to 35s. first its 35s, then 37, then 4ds, then all your friends will make fun of you for ONLY having 43 (just ask me how i know) from what I read there is NO way I would consider toyota axles. I had a toyota with a 4.3 once, and i broke axle and case parts like they were butter. yea, I drive like a drunk monkey, but it sounds like you do too...
08-23-2019 08:05 AM
Mr Stubs Check out Jantz Engineering. He has a DYI kit or can install one for you in a 9.5 third.
08-22-2019 02:01 PM
Black Sheep
Quote:
Originally Posted by Mr Stubs View Post
I wish I could post picks easy. I would show the load bolt marks on the backside of my ring gear. Ring gear deflection is real.

Custom load bolt in 9.5 thirds is money. Shafts are not a issue since they are 35 spline.
How much did it run for the load bolt?

May be overkill for 4340 30 spline, but worth looking into
08-22-2019 01:50 PM
rockyota83
Quote:
Originally Posted by Mr Stubs View Post
I wish I could post picks easy. I would show the load bolt marks on the backside of my ring gear. Ring gear deflection is real.
x2
my old 8" arb carrier had marks all over it from the pinion from when it would deflect
08-22-2019 08:11 AM
ky scrambled
Quote:
Originally Posted by Mr Stubs View Post
I wish I could post picks easy. I would show the load bolt marks on the backside of my ring gear. Ring gear deflection is real.

Custom load bolt in 9.5 thirds is money. Shafts are not a issue since they are 35 spline.
Just seen a buddies load bolt out of HP60 rear with the Jana kit. Was blown away at how much wear there was.
08-22-2019 08:03 AM
Mr Stubs I wish I could post picks easy. I would show the load bolt marks on the backside of my ring gear. Ring gear deflection is real.

Custom load bolt in 9.5 thirds is money. Shafts are not a issue since they are 35 spline.
08-09-2019 06:34 PM
YotaAtieToo
Quote:
Originally Posted by Black Sheep View Post
Well, sold my FF 8" and spacers to a friend going under a much milder rig

I built a FZJ80 rear with a Grizzly and Nitro shafts. That should hold up to 35s all day.

On the front i have a couple of directions... I bent Brians ear over at FROR for a good hour awhile back. He seems to think that FJ80 vs Mini was a moot point, because at the end of the day its still 30 spline inners. Well, i have a 30 spline rear, so whatever.

I have a friend in Kangaroo land sourcing me a H233 HP front diff. (31 spline carrier). I have a SD D50, 84 mini axle, and a FJ80 front for donor outers... Or I found a Dodge KP D60 collecting dust, but the weight and clearance penalty doesnt seem worth it.

Given those options, and only those options, discuss. Back in the day my last rig was a F350 with D60s on 35s. The gas peddle was binary and i never broke an axle shaft, because it couldnt go anywhere without full throttle. so (in my mind) 30 spline will work. Money not an option, i already know im spending $3500+ on the front.
FJ80 front, yes they are the same 30 spline as the mini truck. But you still hear about broken chromo birfs every now and then, most likely from age and wear, but it still happens. The bigger advantage to me is the size of the balls and knuckles, especially if you go hellfire. Plus you get sharper steering.
08-09-2019 05:40 PM
rockota
Quote:
Originally Posted by GRMhick View Post
Everyone I have talked to who went to a diamond rear axle dramatically increased the life of 8” differentials. 75% seems correct to me.
I agree with this. ISsues with an older ARB I had ended up being hosing flex/bend.
08-08-2019 09:07 PM
Black Sheep Well, sold my FF 8" and spacers to a friend going under a much milder rig

I built a FZJ80 rear with a Grizzly and Nitro shafts. That should hold up to 35s all day.

On the front i have a couple of directions... I bent Brians ear over at FROR for a good hour awhile back. He seems to think that FJ80 vs Mini was a moot point, because at the end of the day its still 30 spline inners. Well, i have a 30 spline rear, so whatever.

I have a friend in Kangaroo land sourcing me a H233 HP front diff. (31 spline carrier). I have a SD D50, 84 mini axle, and a FJ80 front for donor outers... Or I found a Dodge KP D60 collecting dust, but the weight and clearance penalty doesnt seem worth it.

Given those options, and only those options, discuss. Back in the day my last rig was a F350 with D60s on 35s. The gas peddle was binary and i never broke an axle shaft, because it couldnt go anywhere without full throttle. so (in my mind) 30 spline will work. Money not an option, i already know im spending $3500+ on the front.
02-24-2019 03:18 PM
BadRep After reading threw this post ive got a few questions. I just picked up an 86 4runner. I'm debating swapping out the toys for d44 and a newer chevy rear with discs. I'm in Idaho, I dont think I will have any issues with narrow hard turn trails, this is my first "trail" rig build and I'd rather not build it multiple times, hence going full width and dual cases from the start before I build drivelines. Does anyone still run toyota leaf springs with full width axles? I also noticed someone mentioning Ford axles, isnt the diff on the wrong side?
02-11-2019 09:01 PM
lilrick 60 up front
14-bolt out back
CRY ONCE orrrr cry twice.... your choice.
02-10-2019 09:07 PM
tripleXJ 60s for me all day long. heavier, way more flex, overbuilt for most yota.



02-10-2019 01:41 PM
DEER TICK Here’s my bitch after 15 years of breaking, and building better. Attachment 2919288
02-10-2019 12:47 AM
Roc Doc
Quote:
Originally Posted by GRMhick View Post
Everyone I have talked to who went to a diamond rear axle dramatically increased the life of 8” differentials. 75% seems correct to me.
Surely the Diamond housings are less prone to flex, but the biggest difference to me with the 8" gear sets was getting them cryo'd. I did all the other tweaks. buttonhead machine screws to replace the studs, solid crush, beefy anti-wrap link, etc., and still broke ring gears until I went cryo.
02-09-2019 10:08 PM
too tall I'm partial to toyota parts I have beat on 9.5" thirds pretty hard and they have held up pretty good. I would think that on 35's they would survive. I made a 60 series housing close to the same width as an 80 series rear using the spacer you talked about earlier. Trail gear makes a +5 short side that works when the spacer is added. Quite a lot wider but not quite full width. Allows me to turn 40's on my rig lock to lock and not touch the front leaves. I run a full gusset past the perches on a stock front housing and it seems to stay straight a bit better than others I have seen. I have a set of bigger axles (60/14 bolt) I could have put in a long time ago but these ones just stay together somehow?
02-09-2019 07:30 PM
GRMhick
Quote:
Originally Posted by Black Sheep View Post
GRM - still running an HP e locker on the front?
Low pinion 8” elocker. Also out of an FJ Cruiser. Never an issue, even with early trail gear 5.29 gears.
02-09-2019 06:51 PM
cryptic toy I will agree and disagree My thoughts are the third is only as strong as it can be . If you take that same third and put it in a housing that has some beef to it ,seems like it will take some stress out of the third. In a stock housing all the minor bends and tweaks seem like it will eventually play havoc on the third. My third is still good but on its third housing (all toyota and changed asap ) and this one is torque /collapsed from spring perch to brake backing plate. So I'm on the fence of which way to go.
02-09-2019 03:48 PM
rockyota83
Quote:
Originally Posted by GRMhick View Post
Everyone I have talked to who went to a diamond rear axle dramatically increased the life of 8” differentials. 75% seems correct to me.
because people with diamonds say something doesnt mean its true, youre not gonna make a toy 8" 75% stronger with a better housing but i guess we will just have to agree to disagree
02-09-2019 02:45 PM
Black Sheep Is the ARB that much superior in strength/runout/flex versus another full case locker? Ive put in some cheap spools that the back lash varied depending on where on the ring gear i was measuring


GRM - still running an HP e locker on the front?
02-09-2019 02:02 PM
RANGERROD
Quote:
Originally Posted by GRMhick View Post
Everyone I have talked to who went to a diamond rear axle dramatically increased the life of 8” differentials. 75% seems correct to me.
My gear guy says the same thing and he’s old and done a few Toyota diffs.
02-09-2019 02:00 PM
GRMhick
Quote:
Originally Posted by rockyota83 View Post
i think youre exaggerating there a little the stiffer housing might help but not no 75% if he put an ARB carrier in there and a solid pinion spacer then he might get up to that 75%
Everyone I have talked to who went to a diamond rear axle dramatically increased the life of 8” differentials. 75% seems correct to me.
02-09-2019 01:46 PM
rockyota83
Quote:
Originally Posted by GRMhick View Post
$20 says he will break 75% less rear diffs becaise the dually axle is much stiffer, which will help with ring gear deflection.
i think youre exaggerating there a little the stiffer housing might help but not no 75% if he put an ARB carrier in there and a solid pinion spacer then he might get up to that 75%
02-09-2019 01:13 PM
GRMhick The rear 8” elocker broke 9 of the pinion teeth. When it was in an FJ Cruiser, the same diff broke 3 ring gear teeth.

My guess is the 8” 4cyl housing didnt have enough oil volume and the axle overheated.

But no issues now that I have a diamond 9.5” rear axle
02-09-2019 10:27 AM
Black Sheep
Quote:
Originally Posted by GRMhick View Post
$20 says he will break 75% less rear diffs becaise the dually axle is much stiffer, which will help with ring gear deflection.

The front end on the other hand... I worry about those extensions on a stock toyota mini axle. I bent 3 houings right under the spring perch in 6 months before I stepped up to the diamond. I’m at 10 years on the diamond with signifigantly more wheeling and still no issues.

And I had to add wheel spacers to my diamond to clear the 4.5” backspace wheels, making my truck 65” front and 64” rear.
Did you just break the R&P teeth as per tradition? Or actually shear a pinion. And yes, the housing is definitely bigger than your typical mini rear. Hoping the grizzly/locker will add some rigidity as well.

Im not planning on it being a permanent solution. If I like the setup, then i can order a diamond and swap housing down the road. I also have a spare mini housing. If i need to be wider, i can add IFS hubs to the front and FJ80 hubs to the rear. Or just swap in an 80 rear. If i had a FJ60 front housing, id probably go 9.5s off the bat.

I just cant stomach spending $1000+ on a housing that i dont know 100% spec i want it built to. I wouldnt have thought FJ80 wheels would rub the springs.
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