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jeepmutiny 06-24-2013 08:47 AM

Humvee drop axles?
Anyone ever install Humvee military axles in a Jeep? I have never really messed with them and was wondering about swap issues and strength. Thanks Jon

chriskeenan 06-24-2013 09:26 AM

the HMMWV is IFS/IRS with portal ends IIRC, it'd be easier to swap in unimog axles if you're after the portals.

jeepmutiny 06-24-2013 09:43 AM

Wasn't sure how they work other than being independent A frame. I have looked over a couple Unimog trucks at the military collectors shows I go to but I would think parts would be scarce in the U.S.A.....Jon

mike_breaker_5 06-24-2013 09:47 AM

hmmwv axles are crazy wide for a wrangler, mog sticks would be better. they are an independent suspension portal design.

i saw a guy on pirate put IRS axles in his rig. i think they were aluminum corvette dana 60's or something crazy like that. very cool, but WAY more work than i would want to do.

dynatrack makes portals that are bolt on for tj/jk if your pockets are deep enough.

jason m 06-24-2013 03:53 PM

404 U mogg axles would be better choice, but as with any portal design I like them a lot but one thing I don't like is when you rollover you take a big risk of breaking the portal box.

The leverage when the tire strikes the ground is not in a center line with axle, so it will always want to force the box inward when contact happens, so this will normally crack the portal box.

A few ways to combat this is get larger portals like 416 axles, or after market steel boxes, but once that's done at what cost are a set of well built 60/14 bolt that will offer you the same strength and no chance of portal box breaking.
Plus the other down side is making the pinion match and dumping the torque tube design..

You can plug the Humvee portal boxes onto a set of 9" axles, but oiling becomes a slight concern at higher speeds as you need the pinion flipped to make it go forward. Crawling no big deal, short burst your fine, a lot of highway driving I cant see the pinion lasting long.


jeepmutiny 06-25-2013 05:53 PM

So much for that idea, I saw online they make a 5 ton version that is stronger by spec than a Rockwell but same issue of a 7:00 something gear. You would have to run a 50 inch Terra to get above 55 MPH. I do like the extra clearance but not at the cost of hauling it everywhere. No fun if you can't drive it Ya know. Just reviewing all options and it seems a Gm or Dana 60-70 would be the best option for realistic gearing and drivability. But I guess that is why you can get a Unimog rebuilt axle for 1200 and a high pinion 60 costs 5-7 grand from Currie.....Jon

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