BD diesel 2WD Low on an Aisin

[Flashman]

Has anyone installed this product from BD diesel on the Aisin tranny? The reverse in my truck with the 342 rear end seems kinda fast. The ability to have 2WD low has always attracted me - but I am coming from driving manual transmission trucks for 30 years and always wanted to be able to go really slow when backing up trailer in tight spots. But with an auto the constant clutch slipping is not a concern?

[1stgenfarmboy]

I have used all my trucks for picking up hay with a 25ft goosneck, the ones with an auto and 4x4 always went in low 2wd, the only 2wd truck I had " 1999 cummins auto " i installed a tripple disc billet converter and a derail trans cooler, you had to drive with one eye on the trans temp because as the load got heaver the temp got hot.

Never owned another 2wd after that because of not having low range, all the other trucks " all cummins powered " that were auto were just fine in 2wd low, and this is pulling 180 square bails or 12 round bails of hay in a soft field.

[BenK]

Correct....but....the slippage is now in the hydraulic fluid inside the TC

Why some burn up their automatic's going slow....maneuvering a heavy trailer into a tight spot.

One move will be fine, but if they have to make several, high throttle maneuvers...sawing back and forth...they risk burning up the clutches inside the automatic tranny....some spot on...most will then have burnt ATF ash in there.

Hopefully there will be enough 'good' ATF to dilute those abrasive particles and are filtered out...but over time and done too often...over loads the filter....eating the auto's clutches...

Once anyone of those clutches slip...in what seemingly is an instant...that gear's clutches are toast. Usually reverse and/or 1st

ScottG wrote:
There's no clutch slippage with a auto - the torque converter does all the work and having it in a lower gear ratio is even easier on the trans.
I went one summer without a front drive shaft. It was great using 2wd low!!

[noteven]

romore wrote:
The factory does not set it up to run 2 wheel lo for a reason, the torque especially with a diesel could lead to early drive line failure. I had a Jeep Wagoneer with it but that thing was so under powered it needed all the help it could get.

The nut holding the steering wheel can control this.

The factories could program a modern 4x4 to limit engine torque (they do now with diesels) vs speed vs wheel spin vs dumbass behind the wheel to give the owner a nice safe slow creeper reverse for pushing trailers if they wanted to.

It's not really needed in go forward because that is all about the race to the toppa the hill....

[noteven]

I don't think this kit is applicable to trucks later than Gen 2 - 2002

[romore]

The factory does not set it up to run 2 wheel lo for a reason, the torque especially with a diesel could lead to early drive line failure. I had a Jeep Wagoneer with it but that thing was so under powered it needed all the help it could get.

[ScottG]

There's no clutch slippage with a auto - the torque converter does all the work and having it in a lower gear ratio is even easier on the trans.
I went one summer without a front drive shaft. It was great using 2wd low!!