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MMW Dana 300 waiting list

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You can clearly see that the fork was too far forward on the shaft. the collar was riding on the center gear in 1-1 range.

I got some glitter out of my oil. I drove less than 5miles.
 
I’m glad I assembled my case myself now.

I had some glitter out of my case breaking the jb gears.
 
I did stock D300 gears and the MMW replace a case...I have a LOT of hard days on mine with minimal issues (pops out of low/rear on steep bouncy downhills, ie Hammers) I bumped to a 220# spring cut to .750ish total length (not .500 like they did), still breaks around 10#.

If you pay attention to the OEM D300 shift rails, you'll note that the detent points are not even....yet MMW has their 3 detents spaced equally. Hard to stay in gear with the rails don't split everything equally.

Be SURE the shift forks are square, there were known issues with them being welded crooked. Be SURE your set screws are locktighted and tight.

JB Conversions shift collars are a worthwhile upgrade, if mine ever comes out, those will go in.
 
woody said:
JB Conversions shift collars are a worthwhile upgrade, if mine ever comes out, those will go in.
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Mild tangent-
Are the JB Conversions D300 shift collars a different design than stock, or just new VS old and likely worn components?
 
chaplinfj60 said:
wait what did i mess. edelbrock, what did i mess?:beer::beer:
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Edelbrocks foundry makes the castings for Atlas transfer cases. The last remaining edelbrock will likely sell of to a investor group, who will undoubtedly send aluminum work off to cheap ass china. Thats when they will turn to junk. On the upside American forged aluminum nc machined cases will become king at that point. But will probably be 6 grand plus each. Probably 8 really. If your gonna want a good atlas in the future, get in line now.
 
I'm not really sure that Advanced is in a much better spot. They were purchased by some investment group that is owned by some indian tribe. So far it seems like they've been pretty standoffish and allowing Advanced to do what they do, but its a matter of time. Advanced has a good product(thats had plenty of its own issues by the way), if the investment group allows Advanced to focus on making good products and not being all about massive investment returns then things will probably continue on well. Time will tell.
 
The Freeak said:
Mild tangent-
Are the JB Conversions D300 shift collars a different design than stock, or just new VS old and likely worn components?
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I "believe" they have a slightly longer tooth design versus stock....but the worn/old issue also comes into play.
 
Bummer all around. A friend has a MMW t-case that leaks already. “I hate this fucking t-case” was a quote from last Friday.
 
In some respects the EV thing might mitigate some of the t-case issues we face in the future. If you can put a motor on each axle or at each wheel, then there is no need for a t-case. Of course that depends on cheap OEM parts that we can actually adapt and other technologies that just aren't there yet.
 
Ghetto Fab. said:
In some respects the EV thing might mitigate some of the t-case issues we face in the future. If you can put a motor on each axle or at each wheel, then there is no need for a t-case. Of course that depends on cheap OEM parts that we can actually adapt and other technologies that just aren't there yet.
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F that ! I wanna hear a v8 or pew pew when im doing a burnout on rocks !
 
bunk said:
F that ! I wanna hear a v8 or pew pew when im doing a burnout on rocks !
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I don't disagree, but it seems likely the way things are headed. If we could get beyond some of the technological hurdles there are some advantages in it too.
 
I can't believe Aa hasn't brought casting in house yet.


Side note/wierd idea.

What if you welded a case out of thick steel pieces and then machined after? Seems like with steel it could be thinner and possibly not really that heavy?

Cost wise I'm not sure how it would work out. Hard to believe it could cost more than a billet aluminum case though.
 
YotaAtieToo said:
I can't believe Aa hasn't brought casting in house yet.


Side note/wierd idea.

What if you welded a case out of thick steel pieces and then machined after?
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After considering jig costs, controlling for and re-working defects and increased machining cost i doubt it would be cheaper than just tooling up to cast and scrapping the odd reject.

You or I building a one-off? Weld and machine that fucker all the way.
 
arse_sidewards said:
After considering jig costs, controlling for and re-working defects and increased machining cost i doubt it would be cheaper than just tooling up to cast and scrapping the odd reject.

You or I building a one-off? Weld and machine that fucker all the way.
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Casting is expensive to get into, any competent Fab guy could make a few fixures pretty easily. I guess it depends if we're talking 100s of cases a year or 1000s?
 
Every time I think about putting a case that can do ft digs in my rig someone bumps this thread:flipoff2:

Glad I have a stack of Toyota cases:laughing:
 
YotaAtieToo said:
Casting is expensive to get into, any competent Fab guy could make a few fixures pretty easily. I guess it depends if we're talking 100s of cases a year or 1000s?
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How many aftermarket transfer cases do you think get sold per year? Atlas, Hero, Midnight Metalworks/Behemoth style cases, not Toyota or others.
 
benw said:
How many aftermarket transfer cases do you think get sold per year? Atlas, Hero, Midnight Metalworks/Behemoth style cases, not Toyota or others.
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I wish I had some vague idea of the number. But the fact is the amount of t-cases that could be sold per year from all of those companies combined exceeds all of those companies combined ability to produce them.
 
benw said:
How many aftermarket transfer cases do you think get sold per year? Atlas, Hero, Midnight Metalworks/Behemoth style cases, not Toyota or others.
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Good question. I thought of that myself after posting earlier.

I'd think aa sells at least a few thousand a year? Guessing more than 2k and less than 10k No idea on the other guys.
 
I also have no idea but I’d be surprised if it’s more than 2,000
 
JR4X said:
I wish I had some vague idea of the number. But the fact is the amount of t-cases that could be sold per year from all of those companies combined exceeds all of those companies combined ability to produce them.
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It seems like that from an outside perspective but if that were true why hasn’t AA scaled to meet the demand? They certainly have the product and experience to do it if there was a reason to do it.
 
benw said:
It seems like that from an outside perspective but if that were true why hasn’t AA scaled to meet the demand? They certainly have the product and experience to do it if there was a reason to do it.
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I wonder if they're hesitant to expand too much with the possibility of demand dropping.

Right now they know they can keep busy with what they have for many months to come, if they expand to catch up and demand stays they same, eventually they will have more supply than demand. If supply drops, they're really in trouble.
 
YotaAtieToo said:
I wonder if they're hesitant to expand too much with the possibility of demand dropping.

Right now they know they can keep busy with what they have for many months to come, if they expand to catch up and demand stays they same, eventually they will have more supply than demand. If supply drops, they're really in trouble.
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They’ve been doing this for 20+ years. They have the data needed to adjust to the market.
 
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