Dana 20 clocking

[Yeller]

I searched and didn’t find anything. I know the adapter for a 4r70/Dana 20 from AA only installs 1 way, has anyone ever changed the clocking to raise the front output so it is almost horizontal? Is it even possible and have driveshaft clear the trans? Actually a modification I’ve never done with this combination. I’m always looking to use parts in ways that they were never intended

 

[phred]

Steve I don’t think I’ve ever used a part as actually intended.

 

[Timmy390]

Not 4r70 but I think it's the same adaptor as I used on my M5ODR2 conversion. I clocked the D20 up on position to clear everything. Below is a thread on it. It shows the modification I made to the twin Sticks mounting bracket. I made the bracket so it would work at the 12 and 1 o'clock D20 clocking positions. Also shows the grinding I had to do on the M5.
https://classicbroncos.com/forums/threads/m5odr2-twin-stick-help-clarification-grind-webbing.313822/

Tim

 

[SteveL]

Aren't there lubrication issues to deal with if you clock th d-20?

 

[Yeller]

Not 4r70 but I think it's the same adaptor as I used on my M5ODR2 conversion. I clocked the D20 up on position to clear everything. Below is a thread on it. It shows the modification I made to the twin Sticks mounting bracket. I made the bracket so it would work at the 12 and 1 o'clock D20 clocking positions. Also shows the grinding I had to do on the M5.
https://classicbroncos.com/forums/threads/m5odr2-twin-stick-help-clarification-grind-webbing.313822/

Tim

That makes sense. The only adapter I had looked at was this one, which has no clocking options. I can see your option working just fine starting with a 4x4 trans.

 

[Yeller]

Aren't there lubrication issues to deal with if you clock th d-20?

only if it is high enough that you can't get enough oil to reach the idler gear. If the idler gear is in contact with oil it is fine. All gear driven cases have the same issue, it is easy to get around but has to be taken into consideration. This application wouldn't be completely flat, just up a long ways from where it is in a bronco.

 

[Timmy390]

That makes sense. The only adapter I had looked at was this one, which has no clocking options. I can see your option working just fine starting with a 4x4 trans.

View attachment 923882

Is that the 2 wheel transmission adaptor? Call AA and make SURE you have the right adaptor for your trans and D20. J vs. T shift.

I'm not 100% sure but I think you can use the ZF adaptor which is the kit I used for my M5

Tim

 

[Yeller]

Is that the 2 wheel transmission adaptor? Call AA and make SURE you have the right adaptor for your trans and D20. J vs. T shift.

Tim

Thank you Tim, nothing has been bought yet, just tapping the CB brain trust before diving too deep.

 

[Line58]

only if it is high enough that you can't get enough oil to reach the idler gear. If the idler gear is in contact with oil it is fine. All gear driven cases have the same issue, it is easy to get around but has to be taken into consideration. This application wouldn't be completely flat, just up a long ways from where it is in a bronco.

How do people usually get around this issue?

I have a Bronco D20 installed in my Jeep TJ behind an AX15 (adapted with a NWF blackbox) with nearly flat clocking, and I've been a bit worried by how little gear lube you can get in using the existing fill and drain holes.

 

[ssray]

How do people usually get around this issue?

I have a Bronco D20 installed in my Jeep TJ behind an AX15 (adapted with a NWF blackbox) with nearly flat clocking, and I've been a bit worried by how little gear lube you can get in using the existing fill and drain holes.

Park it on a good slope when you fill it. Should get some more in it. How much might depend on how brave you are.

 

[Yeller]

How do people usually get around this issue?

I have a Bronco D20 installed in my Jeep TJ behind an AX15 (adapted with a NWF blackbox) with nearly flat clocking, and I've been a bit worried by how little gear lube you can get in using the existing fill and drain holes.

On 205’s I put a 90 degree pipe fitting in the fill hole to raise the fill level. Just put the fill plug into the 90. If you get it too full it will puke fluid out the vent. When it gets to the correct level it will stop lol.

 

[Broncobowsher]

On 205’s I put a 90 degree pipe fitting in the fill hole to raise the fill level. Just put the fill plug into the 90. If you get it too full it will puke fluid out the vent. When it gets to the correct level it will stop lol.

Sounds like the front diff fill on the '66 Dana 30 axles.

I once lost a seal between the transmission and transfer case on a BroncoII (yea, I know, completely different parts) and the transmission was draining into the transfer case. I kept the transmission filled. Eventually both were at the same level, which was a massively overfilled transfer case. I'll fix it one day turned into several years later and close to 100k down the road I finallly sold it off for pretty much scrap and the transfer case was still perfect.

 

[Yeller]

Sounds like the front diff fill on the '66 Dana 30 axles.

I once lost a seal between the transmission and transfer case on a BroncoII (yea, I know, completely different parts) and the transmission was draining into the transfer case. I kept the transmission filled. Eventually both were at the same level, which was a massively overfilled transfer case. I'll fix it one day turned into several years later and close to 100k down the road I finallly sold it off for pretty much scrap and the transfer case was still perfect.

Had a similar situation with a Dana 300 in my buggy. The tell that there was a problem was the caps on the shift rails kept popping off, they were filling with fluid hydraulicly pushing off when it was shifted, turned out there was a bolt missing in the seal retainer, it was not in the transmission so evidently it wasn’t there when it was assembled, ran that way for over a decade, although it just got high quality drives on Sundays

 

[bigmuddy]

How do people usually get around this issue?

I have a Bronco D20 installed in my Jeep TJ behind an AX15 (adapted with a NWF blackbox) with nearly flat clocking, and I've been a bit worried by how little gear lube you can get in using the existing fill and drain holes.

Hey who let the Jeep guy in

 

[Yeller]

Hey who let the Jeep guy in

Whataya talkin about?

 

[bigmuddy]

Whataya talkin about?

Line58, said he has a Dana 20 on his TJ???

 

[Yeller]

Line58, said he has a Dana 20 on his TJ???

Oh I caught that, was referring to some other guy with a jeep and up until very recently did not own a ford motor even though he owns a well known bronco

 

[bigmuddy]

Oh I caught that, was referring to some other guy with a jeep and up until very recently did not own a ford motor even though he owns a well known bronco

Ha well that would have been funnier, but for you I would have said who let the chevy guy in

 

[ssray]

Oh I caught that, was referring to some other guy with a jeep and up until very recently did not own a ford motor even though he owns a well known bronco

Reminds me of sprint car races at our state fair. Was looking through the program once and there was one car that wasn’t Chevy powered. Nope, sorry Ford folks it wasn’t a Ford. Offenhowser!