HI-9 or Hp60??

[89yjguy]

I'm going to have a new rear axle built for my yj,and I'm not sure what to get.
My rig has a built 360,727,208 and soa with 39.5 iroks.As much as i would like to say it only sees trails and offroading, I do drive it on the street a couple thousand miles a year.The axles that I have now, are a built 44 front, superior shafts,randy's superjoints and an arb.And a currie hp9inch rear with 33 spline shafts and spool. 4.10 gears. 5on5.5 bp (stock width for a yj)I've been doing some research and it seems like the hi-9 is better all the way around.A couple of concerns that I have now,I want an arb or detroit for the road driving,my skyjacker fifth-link is ripping my stock 9inch housing,(where is was welded on) and I just want a stronger rear axle,somthing I can beat on and not break. So, does anyone run the true hi-9? and if so,how is it holding up? Do you guys have any sugjustions?I don't care if its going to be expensive,I just want it to last.Give me your thoughts and ideas! Thanks,Jon.:)

[Schmozilla]

If you want to beat on it and not worry about breaking it... you need to or should run a LP axle in the rear...

[Todd W]

If you want to beat on it and not worry about breaking it... you need to or should run a LP axle in the rear...

:rolleyes:

[4x4not]

Why not build a 14bolt instead? The pinion is higher than a LP60, and if you shave it right you'll have almost the clearance of a D44. And 14bolts are CHEAP :D This way you'll have more $$$ to put into the front, since if you start beating it too much that D44 will start-a-breakin soon enough

[Flashover Mfg]

Why not build a 14bolt instead? The pinion is higher than a LP60, and if you shave it right you'll have almost the clearance of a D44. And 14bolts are CHEAP :D This way you'll have more $$$ to put into the front, since if you start beating it too much that D44 will start-a-breakin soon enough
A 14 bolt pinion is 3/8" lower than a LP 60. The 14 bolt pinion is 1 1/2" below center line whereas the 60 is 1 1/8" below, although the pinion snout on the 14 bolt is about an inch shorter. Measurements taken from True Hi 9's website. (http://www.truehi9.com/driveshaft2.html)

Ryan

[Schmozilla]

When I inquired about the currie high 9 I was told they will not warenty nor do they recomend any tire larger that 35 inches and no hot motors...

[4x4not]

A 14 bolt pinion is 3/8" lower than a LP 60. The 14 bolt pinion is 1 1/2" below center line whereas the 60 is 1 1/8" below, although the pinion snout on the 14 bolt is about an inch shorter. Measurements taken from True Hi 9's website. (http://www.truehi9.com/driveshaft2.html)
OK, maybe I was wrong there, but the 14b pinion LOOKS higher to me :flipoff2:

Either way, they are a dime-a-dozen and work extremely well. But hey, what the hell do I know, right?

[truehi9]

I'm sure I'll get scolded for this but since people without stars aren't able to search anymore I'll post these threads. :)

http://www.pirate4x4.com/forum/showthread.php?t=296234&highlight=hi9

http://www.pirate4x4.com/forum/showthread.php?t=443386&highlight=hi9

http://www.pirate4x4.com/forum/showthread.php?t=383875&highlight=hi9

http://www.pirate4x4.com/forum/showthread.php?t=446572&highlight=hi9

There doesn't seem to be a strength loss with our high pinion setup. We believe this because we have multiple customers that broke low pinion setups and haven't broken ours since they switched. To date ZERO breakage, ZERO oiling failures/issues.

[NE-RokToy]

A heavy duty housing and hi-9 would probably suit your needs

However I would go for a HP 60 with thick ass tubes, I would feel much more comfortable bashing that against the rocks and you will still have plenty of clearance.

[4x4not]

Well the ultimate would be a Diamond housing with a TrueHi9 but I don't know how much $$$ you have to throw around :D

[Capt. Nemo]

I'll throw this link out there:

http://www.pirate4x4.com/forum/showthread.php?t=462256

Just to re-emphasize, I've had no problems whatsoever with the Hi9 unit at all. Their customer service is top notch, even if you are buying a second hand unit from someone else. I'm running my Hi9 in a Currie HD housing with incorporated skid plate and 35 spline axles. I wanted to build one axle, one time - and this is what about 6 months of research lead me to buy.

Eric

[89yjguy]

Thanks for the last link eric. I am in the same position,I want to build one axle,one time.I think i will probably go with the hi-9 and 35spline superior shafts.I'm just not sure what I want more,arb or detroit.I like how the spool that I have now is predictable on the road.The arb would be nice,but,I don't want any problems.Does the detroit work well on the street? I used to have the powertrax no-slip in the rear of my old xj and that was quiet and predictable on the street.Now,what housing do I go with, hd currie? or diamond? Thanks,Jon.

[BrettM]

for a rear axle, for 35-42" tires, non-portal, my choice would definitely be Diamond housing, Hi9, 35spline Detroit, Superior shafts (or Jack's 300m if you're really going all out) and some sweet disc brakes. change that to a spool if it's trail onl

[89yjguy]

Thats kind of the way I'm leaning. Diamond housing and hi-9,35 spline and arb or detroit. Now, do I stick with soa 2 inch packs in the rear,or go with a quarter eliptical setup? That is the question.??

[89yjguy]

Well, after talking with Larry at mad4wd, I decided he will be doing my axle. Hi-9,35 spline,ff,disc brakes,arb,custom housing on 1/2 wall tubes!!!! Can't wait! It's going to be a little while,but I will post picks when I can.

[Joel77]

For how much money???

[Go2Guy]

Well, after talking with Larry at mad4wd, I decided he will be doing my axle. Hi-9,35 spline,ff,disc brakes,arb,custom housing on 1/2 wall tubes!!!! Can't wait! It's going to be a little while,but I will post picks when I can.

You'll be happy all around- oops- check with Larry and make sure the ARB is worthy- they had some type of problems they work fixing with the 9" unit- it may be fixed now. It was driving some comp teams nuts with failures.

Speaking of comp teams- many are having trouble getting more than 2 races out of an HP60 gear set, no matter who's gears they use. Hi9 is where it's at, if you're being thrifty run a low 60 or low 9 but the cost to build a Hi9 is pretty darn close to a similar low 9.

[4x4not]

I priced out building a front Diamond/Hi9 axle using a Detroit and the D60 Longfields... came out to a little over $7000. Expensive, but not too bad for a basically bulletproof steer axle (for the ~42" crowd)

[89yjguy]

For how much money???
It's going to be right around 6 grand! but, I will have an axle that I should never break.:) Jon.