Allison conversions

[CKESSEL]

While I was walking around at SEMA last week, I saw an outfit from Florida that does conversions for 12v to current HPCR trucks. Check out cumminsallisonconversion.com 865-253-1133

 

[Simplysmn]

A Allison is Nice but for the Money you can have a 48re built to handle More and easier to install .

 

[DonFitzwater]

X2. Much rather have a built 48re than an Allison.

 

[BigPapa]

Exactly.

Allison conversion. Why?

 

[RVTRKN]

Even the DMAX crowd who is serious about their high performing duramax's, know to install a built 48re that are far superior than a Alison.

 

[User113]

Perhaps because six speeds are better than four?

see: 227890-Replace-48RE-w-68RFE

 

[MMeier]

Even the DMAX crowd who is serious about their high performing duramax's, .

don't post so early in the morning !:-laf

 

[RVTRKN]

What's up Bro? Any DMAX that is setup for tractor pulling and high torque applications have or want the 48re in the built form, wait a minute, got to pour my coffee, just look for tractor pulling DMAX's.

 

[cerberusiam]

While it is true the 48RE is much better suited to racing and pulling applications, that is hardly the market segment for an Ally conversion.

The addition of 2 more gears is the real reason. For those that need that and can use it effectively it is huge benefit. The 200 series actually has the better split on the double OD's and a deeper 1st gear as that is what it is designed for, rolling loads. The 68RFE has better gear splits all around but it has some strength issues that need addressed before turning it lose behind an unmanaged engine.

 

[AEdelheit]

I would love to have the 2 extra gears on the Allison, 68 RFE or Aisin . I would imagine there are alot of people in my situation that have a mild tuner and dont care about proving my manhood in a 300' pass but would enjoy the extra gearing for day to day driving.

 

[RVTRKN]

My point is, it's not worth converting to the Alison, but the Aisin would be ideal.

 

[cerberusiam]

My point is, it's not worth converting to the Alison, but the Aisin would be ideal.

I would not go that far. It is like any other trans, if you understand the weak points and what not to do it will work quite well.

The AISIN seems to be a good unit, BUT (and it is a big BUT), it hasn't not been used outside of its pre-defined management window. In other words, it hasn't been pushed to the limit with all the safeties turned off. Both the Ally and the 68RFE have hence the fixes and after market parts to compensate for the deficiencies. More than likely if it is ever done there will be issue sin the AISIN that will show when it is subjected to an unmanaged 500 HP 1000 ft\lb engine. Not to mention the problems the loose nut behind the wheel will surface.

As a competition transmission, none of them are going to be a silver bullet. They are all over managed and under clutched. For a tow vehicle with an operator that understands the limits I think an Ally would be a good investment, same as the 68RFE. For bets results they will need some building to withstand the management decoupling from the engine but at this point in time it is doable, the AISIN is still not an option.

 

[AH64ID]

While it is true the 48RE is much better suited to racing and pulling applications, that is hardly the market segment for an Ally conversion.

The addition of 2 more gears is the real reason. For those that need that and can use it effectively it is huge benefit. The 200 series actually has the better split on the double OD's and a deeper 1st gear as that is what it is designed for, rolling loads. The 68RFE has better gear splits all around but it has some strength issues that need addressed before turning it lose behind an unmanaged engine.

Exactly. For towing the design of the Allison is similar to the Aisin and there are more of them and their upgrades available.

The new Aisin is good but I have already seen one on the shop floor... but 1200 lb/ft and towing might just do that. There isn't a lot out there in terms of upgrades yet.

 

[RVTRKN]

I'm not an expert on the Aisin, but I do know they are not controlled by Dodge or Nisan and that they are independent from either. That's why they are drop in ready in any manufacture that wishes to make room for such a big transmission next to the alternative. That's per A Dodge rep that can rebuild in the field and is called in when local techs can't figure their 48re's and 68rfe's. If you were at May Madness, you could have compared the two 68rfe and the Aisin side by side.

 

[cerberusiam]

I'm not an expert on the Aisin, but I do know they are not controlled by Dodge or Nisan and that they are independent from either.

It is not the control by the manufacturer, it is the control thru the engine interface that manages the transmission. If the manufacturer did it would be the same problems as the Ally and TQ shift had, take them 5 years to figure out how to do it correctly. The AISIN uses its own controller managed by AISIN but it needs engine and drive train inputs to function.

 

[RVTRKN]

So the inputs are not universal? The same transmission is in the New Nissan Titan.

 

[AH64ID]

So the inputs are not universal? The same transmission is in the New Nissan Titan.

AFIK that is nothing but rumor.

The model number has not been released by Nissan and they are visually different cases.

Truck Trend does call it a AS69RSC but they also state the rear axle is an AAM 10.5" like in the power wagon but the photos do not show that axle, rather the 9.5" semi-float 14 bolt. I don't have any faith in their guess on the transmission model.

It is possible that the photos on the Nissan website are of pre-production axles and transmissions but I find it much more likely that Truck Trend is guessing.

From Nissan: Helping handle the power and torque of the engine is a heavy-duty 6-speed Aisin automatic transmission developed and tuned exclusively for the TITAN XD

 

[cerberusiam]

Inputs to the trans controller are universal, things like rpm, throttle position, wheel speed, etc, are already on the data bus so it easy to connect a controller. The manufacturer really does nothing but a set number of parameters on a specific data bus protocol and the trans controller does everything else. It will strive to not LET you blow it up.

Highly doubt the Nissan has an AS69RSC, maybe an AS66RSC or one of the smaller units AISIN makes, they have a lot of them, but pretty sure not the big diesel brute transmission.

 

[NIsaacs]

AFIK that is nothing but rumor.

The model number has not been released by Nissan and they are visually different cases.

Truck Trend does call it a AS69RSC but they also state the rear axle is an AAM 10.5" like in the power wagon but the photos do not show that axle, rather the 9.5" semi-float 14 bolt. I don't have any faith in their guess on the transmission model.

It is possible that the photos on the Nissan website are of pre-production axles and transmissions but I find it much more likely that Truck Trend is guessing.

From Nissan: Helping handle the power and torque of the engine is a heavy-duty 6-speed Aisin automatic transmission developed and tuned exclusively for the TITAN XD

The latest Truck Trend article 11-15-15 is now calling the rear axle an AAM 9.84 w/3.91 gear ratio. I would think the 10.5 would be full float and not fit the 6 bolt wheel pattern. I wish the dang thing would get here so we would know more

http://www.trucktrend.com/truck-reviews/1511-first-drive-2016-nissan-titan-xd/

Nick

 

[RVTRKN]

I know the feeling well, the increase in HP when the 6.7 came out in 07. The rummers about the early C&C getting the same increase in HP caused me to pause in my order and not only did the HP stay the same for the C&C, I ended up paying alot more in the increse in the Diesel option and the Blue tech option cost as well. If I was in the market for a 1500, the new Nissan Cummins would be on my probable list.