35 or 40 spliners??

[AKBroncoII]

I was just wondering if anyone has bought a set of 40 spliners for a 9". I can't decide whether I want to go 35 or 40 spline. I have to order 8 lug 9" shafts anyways so I thought I'd just check it out and see which you guys prefer. Thanks. It was a toss up between the Moser and the Dutchmen shafts.

[NOTPRETTY]

I am no engineer, but it seems that 40 spline shafts in a 9" 4x4 would be a waste and definitely force the weak point to the carrier/gears. Don't 40 spline shafts get used mostly by strip racers? I wouldn't spend the money on 35 spline shafts either when you can get a Dana 60 or corp 14 with stock 35 spline shafts for 150.00 or less. Just my two cents

[AKBroncoII]

I already have the stuff to build the 9". Therefore that is what's going in. Plus the ground clearance on the dana 60 or 14 bolt sucks. I have a dana 70 that I'd use if I wanted a fullfloat rearend. But I don't need it. Anyone else?

[NOTPRETTY]

If you haven't decided on the spline count, you haven't decided on the diff. And that means you haven't spent any real money yet. Save the money and buy a 60 or 14...run bigger tires (to get the clearance) and have fun in that Alaskan Snow!! But, if you are definitely going with the 9 inch, 35 spline is plenty and 40 spline is overkil..JMHO.

Good Luck and whatever you choose drive it like you don't care.

[1uglyranger]

I just got my 40 spline shafts yesterday for a semi-float 60. I ordered them from Mark Williams, and they are badazzzzzzz. They make the 35 spline shafts look tiny, and since they are chromoly, I don't even have to consider needing spares :flipoff2:

[SR5Dave]

Look into the cost difference. Then take into account that you will never break if you have 40 spline stuff... as for the weak point being the carrier and gears.... Obviously you know your 9" stuff :rolleyes: :shaking:

Talk to this guy about a 40 spline 9".. he knows his stuff: http://performanceunlimited.com/customproducts/9inchaxles.html Also talk to Vermin, he has a 9" 40 spline setup and loves it.

[The Rockslut]

Getting an 8 lug SF shaft will be a challenge. Call around and see if anyone is currently making these.

[66CJdean]

I know of nobody that makes semifloat 8 lug but I for sure don't know everything. To me the draw back of 40 is you only get a spool but if you only want a spool then for $100 more it is cheap insurance. I expect that you will be cutting the ends off the 70 and be welding them on the ends of that 9" if you want 8 lug. The spindle will need to be bored out a little to get those 1.7's in it I expect but it will be close.

[NOTPRETTY]

:shaking: :shaking:

Like I said, I am not an engineer, but I do know the real world. I have seen gears get fried with 31 spline. I have seen 35 splines fry gears with the 8.8" ring gear set up from Currie. And I seen rigs using 9" ring gears with the axle flipped over using a rear engine comp buggy crack the third member case, destroy the diff and gears. Are these occurance rare, yes. But I can tell you I would not put 40 splines in a rock crawler without some spare thirds around. Peace out.

Edit...Unless you plan on running 33" tires in which case you'll be fine but very light in the wallet.

[NOTPRETTY]

Also, the performance unlimited shafts state they are 255% stronger than a stock 28 spline shaft. Hmmm....I wonder where the next weak point would be.

As for 40 spline 60's...that is much different than a nine inch.

[Mr.N]

You might want to restate that.
99.9% of FF Dana 60's and 100% of Corp 14's are not 35 spline. Now if you said FF vs. SF....
... but I do know the real world.
... when you can get a Dana 60 or corp 14 with stock 35 spline shafts for 150.00 or less. Just my two cents

[Mr.N]

I know of nobody that makes semifloat 8 lug
Have you ever seen this?

[NOTPRETTY]

Sorry...Yes SF. What is the diameter of the corp 14 stock shaft. I honestly don't know. Either way, I'd rather have the 60 or 14 for 150.00 or less. You could be several of them.

[66CJdean]

Have you ever seen this?
A Ford semifloat c-clip rear 60 or a 9.5" Ckevy 14 bolt are semi float 8 lug but I don't know of anyone who sells semifloat 8 lug axles. I think it is time the steped up though since this isn't the first time this has come up.

[AKBroncoII]

I think I'm just going to sell the 9" or use it in my F150. I will probably build the FF70 I have which does have 35 spline shafts and pretty beefy axles. Plus decent ground clearance.

[BigManBrock07]

I am actually looking at keeping my 9", making it a 35 spline FF and going 8 lug with it. What's the chance someone's done this or something like it? Either way I really like the 9", I like what I can do with it, the only thing I don't like as much, is the money I'll spend to do it.

But I think it will be well worth it, what do you guys think?

Phil

[familybeast]

I did a nodular case 9" with a 35 spline spool and axles. I enjoyed it alot. I ran it in a fullsize Bronco across the rubicon and several other local trails over the last 2 years no problems (39" tires). However I am building a new rig and with the tire wear caused by the spool I am not using one again. I also wanted something with more metal that dosn't require skid plates that eat up ground clearence. I am building a 10.25 Sterling rear. It appears it will cost me no more then the 9" buildup. Yes there is some clerance loss but its marginal. Everything in it is stronger and the pinion angle is better. Dana 60, 70 or 14 bolt I would build the largest rear you can. If you are going to wheel alot it will save you money in parts in the long run. Plus you don't need a bunch of custom parts ($$$$$). Build it once and build it big. IMHO

[NE-RokToy]

A Ford semifloat c-clip rear 60 or a 9.5" Ckevy 14 bolt are semi float 8 lug but I don't know of anyone who sells semifloat 8 lug axles. I think it is time the steped up though since this isn't the first time this has come up.

I thought all the semi float 14 bolts were 6 lugs, at least those are the ones I've seen.

[Jrod-13]

I thought all the semi float 14 bolts were 6 lugs, at least those are the ones I've seen.
nope, they made both, I was looking at one earlier today.

[Dwest]

Dutchman does a lot of custom stuff and I believe they make a better shaft than Moser (I have Moser now). I think they show a picture of what you are wanting, not sure about 40 spline though.

http://www.dutchmanms.com/4_axles.html (http://)

[emsoffroad]

I am actually looking at keeping my 9", making it a 35 spline FF and going 8 lug with it. What's the chance someone's done this or something like it? Either way I really like the 9", I like what I can do with it, the only thing I don't like as much, is the money I'll spend to do it.

But I think it will be well worth it, what do you guys think?

Phil

Here you go.
http://www.rockdawgs.com/modules/Gallery/albums/album37/69_005.jpg

[Vermin]

Seems like Notpretty's biggest gripe is he'd rather save money... well, some people like to spend money bro.. I'm one of them. I've got a full Moser'd 40 spline 9" in my Samurai.. oh, and it's 6 lug... with disk brakes.. and it's all stuffed in one of these..

http://www.abusivemotorsports.com/tech/SamiV8Swap/parts/pics/parts13.jpg

I say go for it man.

[BurnedBronco]

Sorry...Yes SF. What is the diameter of the corp 14 stock shaft. I honestly don't know. Either way, I'd rather have the 60 or 14 for 150.00 or less. You could be several of them.
so why would you watse your money on a d60 when most of them out there are 30 spline, and hvae the shafts the same diamter as a d44?
why a 14 bolt? do you like adding excess useless wieght and loss of ground clearence?

[NOTPRETTY]

Look...I am not trying to stir the pot, but here we go.

I got the answer to my own question. It is not always the number of splines that count. A corporate 14 is 30 spline, but the shaft diameter is 1.5 inches...much bigger and stronger than a 31 spline 9 inch. A Corp 14 can handle 42 inch tires and won't break if driven within some/but not much reason. A nine inch can't come close to handling 42's without spending a truck load of money. The 42's give you the clearance or atleast a wash in clearance and weight is unsprung weight which act as anchors to the ground. That is a good thing if you have the engine to push it.

Yes, I want to save money. I am poor. I admit it. As for those with money, congrats. I'll takes whatever you don't need.

Peace and Love to all

[welndmn]

I when I saw the Side axle bearing for a 40 spline 9 inch, I went 35.
It was just too thin for me