Hi, it looks like running an Atlas can save me quite a few headaches (driveline length, correct side drop etc) but has anyone got ANY tech on mating one to an R380?

(Search disabled at present). I can't find anything at all... :(

Cheers, Al.

Search works, just nothing to find :)

http://www.pirate4x4.com/forum/showthread.php?t=414157&highlight=r380+atlas

What are you doing for the rear axle that you need the center output?

Pete

Ta.

Narrowed Mog 404s.

Dammit, I'm not having a lot of luck with this. I had considered the NV4500, though it's heavier (not a very big deal). I can't run an LT230 cos I'm running out of driveline space, the Atlas gives me more room (and solves several other problems on the way...)

No-one done it then? I could just use the NV4500. Anyone know how it compares lengthwise to the R380? (Forget bellhousings for the moment).

Al.
P.S. - if it's working, where's the search button gone????

Ta.
P.S. - if it's working, where's the search button gone????

It now only works for people with a red or yellow star (i.e. subscribers).

Astro, I will be mating an Atlas behind my ZF and putting narrowed MOGs under my 90 RRC in 3weeks. I can't wait to get this project finished and get it over the Con.

Ah, ok thanks Ben, serves me right for being tight I guess...

In case you're in any doubt Ben, I threw the whole Series axle - Toy/longfields problem (on Outerlimits) in the bin. I don't have enough workshop time to be researching which parts fit where, what I need to machine etc, feedback from the various companies who were looking at it faded to nothing (despite me having the intent and the money) - (it's not my job to kick 'em in the ass all the time, if they want my money, they can earn it), then a pair of pinion converted Mog 404s came along for the price of +/-1 ARB locker, and it's now a done deal. I still think it's a good setup (Toy in series), but I don't have the workshop time to bash through it.

Rundog - few Q's:
1. What wheelbase are you looking at? You know the fore/aft distance between atlas output flanges (around 12", right?)?
2. I'm trying to stay with a manual, but if you have a build thread, give me a link to it!
3. Narrowed to what - I was thinking of narrowing the long side to a standard shaft length to use an available shaft?
4. Which pinion conversions did you go for (mine have it already, but I may try to make it shorter if poss).
5. Running discs?
6. Are you narrowing the tubes, or removing the cast bit between the tubes and the portals?

Cheers, Al.

Sorry, didn't know the search was only on for stars :D

What engine are you using?
I don't know how the NV compares to the Rover trans.
Novak Adapters has a lot of good info on different trannys. They might have the overall length of the trans.

Pete

AL - sounds cool, I would go mogs over toy/rover axles any day of the week - especially for that price.

Another option is to move the diff on the front axle to the other side. It has been done plenty of times (try and find frankenrover's buildup - he did it). You need to buy one axle (halfshaft), but that is about all. The centres (or close to centre) rear is OK with an offset T-case output.

Just another option to consider which may be easier and/or cheaper. The LT230 is a strong T-case and with the 404 diff ratios you wouldn't really need more than 3.3:1 low would you?

Pete, don't be selfish - buy us all one! :D

Engine is up in the air between a 4.6 and an LS1. If I was in the States, it'd be an LS1 no question, but I have shipping to add... Having said that, the price difference between a relatively mild turnkey 4.6 and a crate LS1, shipped, is so small that...

The NV4500 with the shortest configuration - GM input and Dodge output housing is the shortest combo. I can't believe it's much longer than the R380...? Main case = 12.375" + Adapter housing = 6.25" + Bellhousing = 6.5".

Ben - the Atlas (with short tailhousing) saves me about 8" of driveline length over the LT230. Which I badly need with the damn Mog pinions. I'd be happy running either - it's more a question of what fits. 100" wheelbase (using the LT230) is a bit longer than I originally intended.

Yeah, I've no probs with flipping the diff. I'll do whatever's necessary to shoehorn it all together. Engine sumps could be an issue...

I'll do a search for Frankenrover's buildup. Oh, no... hang on... :)

Cheers, Al.

100" wheelbase (using the LT230) is a bit longer than I originally intended.


Richard and other who run portals on anything shorter than 100" have commented that their wheelbase is too short.

Sam (Strangerover) is about 112" and frankenrover is around 110" AFAIK, and I have never heard either complain that their wheelbase is too long. If it was me (one day maybe), I would make it 100-109".

How 'bout a Toyota H55F 5-speed?

Not sure if it's exact length but it looks a fair amount shorter than a NV4500. Toyota puts it behind a diesel so I think it's plenty strong. It's getting to be a popular swap with the Land Cruiser guys in place of the NADA H42 4-speed. Atlas makes a T-case for the H42 so it should be the same swap as putting it in front of the stock T-case.

Ah, ok thanks Ben, serves me right for being tight I guess...

In case you're in any doubt Ben, I threw the whole Series axle - Toy/longfields problem (on Outerlimits) in the bin. I don't have enough workshop time to be researching which parts fit where, what I need to machine etc, feedback from the various companies who were looking at it faded to nothing (despite me having the intent and the money) - (it's not my job to kick 'em in the ass all the time, if they want my money, they can earn it), then a pair of pinion converted Mog 404s came along for the price of +/-1 ARB locker, and it's now a done deal. I still think it's a good setup (Toy in series), but I don't have the workshop time to bash through it.

Rundog - few Q's:
1. What wheelbase are you looking at? You know the fore/aft distance between atlas output flanges (around 12", right?)?
2. I'm trying to stay with a manual, but if you have a build thread, give me a link to it!
3. Narrowed to what - I was thinking of narrowing the long side to a standard shaft length to use an available shaft?
4. Which pinion conversions did you go for (mine have it already, but I may try to make it shorter if poss).
5. Running discs?
6. Are you narrowing the tubes, or removing the cast bit between the tubes and the portals?

Cheers, Al.
1) Distance, I do not know yet. I have a non speedo Atlas so it shouldn't be as bad.
2) As soon as I get home from Military deployment (Reserve) I will start the write up.
3) Narrowed 9", Front moved to passenger drop/ rear almost centered
4) EXAXT pinion conversion=1350
5) No discs "YET" However, I have discs on both Atlas outputs, which include the cutting brakes
6) Narrowed tubes, bult by Rob (EXAXT)

Good luck, I will be posting write up and pics soon. Daren

..the Atlas (with short tailhousing) saves me about 8" of driveline length over the LT230...
Al,
I have an LT230 in my rangie and a short shaft (no speedo drive) Atlas in my bushie. I just did a quick check with a tape measure and the Atlas is only 1" shorter than the LT230.

The LT230 is approx 11-1/2" from gearbox face to rear driveshaft face.

Thanks guys.

Bush65 - in fact I'm worried more about drivetrain length (i.e. how far apart my axles must be) which is dictated by the distance between output flanges, not between gearbox mounting face and rear output flange.

All that distance does is move the engine/gearbox forward or back if your transfer box is in a fixed position.

I don't suppose I could twist your arm into measuring the distance between front and rear output flange faces on the LT230 and Atlas could I? that would really help!

Ben - I'll try to stick to 100", I don't want to go any longer.

Merc - ta for the pointer, I'll check out the box.

Cheers, Al.

The front output housing on the LT230 is quite bulky and would probably need to be spaced back some just to clear the side of most heavy duty transmissions. this will increase the length considerably compared to an Atlas.
Aside from that anyone consider flipping the LT230 to driverside (USA) drop?
Selectors for difflock and range change would be a fiddle, but the selector seals I think would cope being permanetly submerged.
Bill.

Mercrover - I checked out the Toy box - nice unit, but I think the 5th ratio of 0.85 is gonna kill that option for me - with the gearing of the mogs and the inevitable road time it's gonna see (i.e. driving it to somewhere interesting!), I need a decent cruise ratio and the R380 or NV4500 are closer to what I need.

Anyone got that atlas output flange to output flange distance? Better still, is there a technical drawing anywhere on the net of the Atlas?

Al.

Anyone got that atlas output flange to output flange distance? Better still, is there a technical drawing anywhere on the net of the Atlas?

Al.

Ask in the gen 4x4 forum. Better chance of results

edit: sticking the link here in case anyone else cares

http://www.pirate4x4.com/forum/showthread.php?t=454227

Al,

If you go GM and need shorter the SM465 is about 12" and the NP435 is 10.8". Both will bolt to the Atlas. Both are 4 spped with granny lows, but with the mogs on, it won't be a speed machine anyway.

As per Isuzurover's comments, longer is better. 88" is pretty tippy fore and aft. 100" would be a good all around compromise and would give you more driveline flexibility.

Sounds exciting - look forward to the pics!!!:D

Thanks guys.

Bush65 - in fact I'm worried more about drivetrain length (i.e. how far apart my axles must be) which is dictated by the distance between output flanges, not between gearbox mounting face and rear output flange.

All that distance does is move the engine/gearbox forward or back if your transfer box is in a fixed position.

I don't suppose I could twist your arm into measuring the distance between front and rear output flange faces on the LT230 and Atlas could I? that would really help!

Ben - I'll try to stick to 100", I don't want to go any longer.

Merc - ta for the pointer, I'll check out the box.

Cheers, Al.
Distances from front output flange to rear output flange are:

LT230 ~ 19-3/8" (492mm)
Atlas without speedo drive ~ 11-1/4" (285mm)

Note: my Atlas has flanges, not yokes.