Blue Jeep

[6099]

Yeah, fender signal. Crab eyes, that's what we call em. Ugly as sin. I know the UK jeeps have the same specs too, just like in Malaysia (where I am). Also, notice the side signal lamps, just under the windshield.


As for the 7:1 volvos, really suck on the highway. Doing 77kph at 3000revs. But that's on 34" tires.

[6099]

http://forum.ih8mud.com/showthread.php?t=59452&page=2

[Jeffy]

Wow, that's cool too!  I really like those FJ80's, too.

So according to him the axles come in three ratios:

7.55
7.09
5.99

I think 5.99's would be good for 36-38's and still be able to do 70-75mph.  7.55's sound great though.  You'd need a transmission like a NV4500 with it's higher OD gear to use it on the highways, I would think.  I wonder how it brakes though.  Those are some huge drums.  Out here we have very little mud so that's not a problem.  What size shoes does it use?  The only other concern would be to set up a e-brake.

Here's the PBB link I found on the same buildup: http://www.pirate4x4.com/forum/showthread.php?t=398873

[6099]

The 7.55 are hard to come by. The rarest set. They came off 6x6 troop carriers. 5.99 ratios are almost 2x the price of the 7.09 ratios here.

Yeah, would be cool for a 4 banger to run 38 rubbers using the 7.55!

The volvo brakes are british made. So the brakes are identical to Land Rover 109 6 cylinder shoes and pistons so replacement parts are available. The drums are very powerful in the dry(made to stop a 3.5 ton volvo!), more powerful than the 4 disc brakes set up I had.  But with just a little water, say bye bye braking!

The volvo trucks had some kind of water seal with a nifty breather hose (or maybe they were for  compressed air instead?) attached to keep out the gunk. But  I've never seen them in real life.

The closest thing this side of the word that has a low overdrive is the AW4 off a 4 litre cherokee.  Has a .70 vs the AX5's .85. That's about 12% more top speed. Any idea if an AW4 will fit between the 231 and AX5?

But in any case, I'm retiring the jeep as a daily driver so I guess I can live with its 80 kph top speeds.

As for the e-brake thing, I did plumb in a line lock. Worked great when it did. Going to just replace it with a manual lever operated shut of valve.

Yeah, not as 'sure' as cable, but it's the best option unless someone comes out with a NP231 pinion brake (Is there one?)

Can't access the link Jeffy.

[Jeffy]

That's one of the problems.  I probably won't go over 35's unless I stop driving it to trails.

My guess is that they used a compressor to add positive pressure to the drums to keep them dry, which is pretty cool.  I'd hate drive in rain and have no brakes.  It rains a lot in winter out here.

I think XJ's may of had a AW4 but it has to be rare since I've only heard of one person having one.  It must have sometime between 84 and 90.

Line lock won't cut it for a daily driver out here.  Line locks will lose pressure over time which can be a problem when parking overnight.  I've seen 231 pinion brakes but you have to have a SYE that doesn't replace the tail cone.  This gives you a flange of sorts to mount a bracket for a caliper and disc.

Seems that the Pirate forums are down for a while.

[6099]

All the 4litre XJs here come with the AW4/NP 242  full time combo. So does the half cuts that come in from Japan.

Speaking of positive pressure, some of the guys here run 12V fish tank pumps to pressure their distributor for really deep crossings. Cool huh!

Any pic of that 231 pinion brake?

[Jeffy]

All the 4litre XJs here come with the AW4/NP 242  full time combo. So does the half cuts that come in from Japan.

Speaking of positive pressure, some of the guys here run 12V fish tank pumps to pressure their distributor for really deep crossings. Cool huh!

Any pic of that 231 pinion brake?

The AW4 needs to be from a 2.5L not a 4.0L.  4.0L AW4's are more common since it was the Select-Trac option on the XJ's.

No picts on the transfer case brake.  A friend was going to get one installed on his TJ from Allpro, I think.  It's basically all custom though.

[6099]

spline count difference? bellhousing issue? Drat! That means I've go to swap in a 4.0 just to get the AW4.

No 2.5 autos this side of the world.

[Jeffy]

spline count difference? bellhousing issue? Drat! That means I've go to swap in a 4.0 just to get the AW4.

No 2.5 autos this side of the world.

The 4.0L uses a different bellhousing bolt pattern then the 2.5L.  The AW4's have a removable bellhousing which makes it interchangeable but you have to have the right bellhousing.  Probably easier to find a 2.8L V6 GM with a 700R4 to use instead.

[chardrc]

in Minnesota we just use a Gatorade bottle cap and some duck tap over our distributor cap for deep water and mud..

[Enjoi]

yeah, but imagine scuba steve welcoming you everytime you open up your hood? :wink:

[Guardian7]

Wow, very interesting, would this design create more leverage for axle wrapping conditions? They appear to have more moving parts than a standard axle design. Are these generally found with leaf springs or coil and do they have control arms to prevent wrap?

[Jeffy]

http://en.wikipedia.org/wiki/Volvo_C303

Hey, 6099, I saw your post on the Real4x4 forum.  I didn't realize that you flipped your axle, that's too cool.  With the 3rd member and rotating the ends, it make it easy, huh?

From what I've been reading the C303 axles are good for up to 37" tires.  They aren't as beefy as the Mog 404's.

I take it the only downside is that vacuum line for the locker being on the bottom?

[6099]

http://en.wikipedia.org/wiki/Volvo_C303

Hey, 6099, I saw your post on the Real4x4 forum.  I didn't realize that you flipped your axle, that's too cool.  With the 3rd member and rotating the ends, it make it easy, huh?

From what I've been reading the C303 axles are good for up to 37" tires.  They aren't as beefy as the Mog 404's.

I take it the only downside is that vacuum line for the locker being on the bottom?

WEll, overall ,it's easy in theory. But it's still a fair bit of figuring things out.

The vacuum housing has been relocated to the top of the axle along with thedog gear arm.

I don't think you could run them upside down since diff oil will flood the bottom (now top) part of the vacuum diaphragm housing  and make it much much slower for the vacuum to pull and release the diaphragm since it's displacing thick oil instead of air.

The caster angle's sorted but it puts the pinion at the wrong angle. So the only thing I'm thinking about is to re-drill the portal flanges bolt holes to clock the pinion up a bit. But I've had enough headaches fitting them in and will leave that for another year.   :(




Yeah, i read that the 37-38inch territory is about the limit. But we can only get 36" tyres here. :evil:

Guardian 7,
As for axle wrap, no problem with the asthmatic 4 banger. But I left the original control arm bracket in place, just in case.

All volvos come with leaf springs

Mog 404 axles are much much beefier, agreed. But it's musch heavier and way too wide. I'd probably need like a foot wide fender flare. Not to mention I won't fit on the tight trails and logs brigdes.


Mog vs volvo

If any of you can get hold of volvos axles I'd strongly recommend it.

5" instant lift from portal drop boxes without penalty of funky driveline angles since you're at stock driveline height by re-using stock YJ springs.

No need SYE.

Low ratio. 6:1 or 7.1:1
With a 7.1:1 diff, crawl ratio works out a little higher than the rubicon's with a 4:1 case.

60"wide.

1 inch diametre tierods BEEEFY.

Disc brakes retrofitability.

Flip-ablility to fit driver side t-case output.

FR/RR locker, easily plumbed into your brake vacuum lines to work. Or you can conver to cable actuation similar to OX's.

Huge 3 inch diametre square axle tube.

Max torque only at the wheels due to portal design, so u don't need beefy driveline components, in other words, keep your stock 1310 joints etc...!!

1 ton rating, as strong if not stronger than D60s.