Engine/Transmission (1998.5 - 2002) DTT & the Exhaust Brake

[klaybus]

I own a 99 with a DTT trans but didn't have the $$$ for the Billet parts. How many are running the DTT without the Billets (before they were available) with an exhaust brake? If so, how many miles have you been running it & have you had any problems?

If I were to run an exhaust brake and bust a shaft would it destroy the entire transmission?

Pondering at the moment..... Something I've been chewing on.



Clay

 

[Big-D]

klaybus,



I have been using a pac-brake with my DTT set up for two years now without any problems to my auto transmission. I tow a 3 horse trailer on a regular basis during the summer months with my '99 and wouldn't consider having an e-brake installed without Bills upgrades. I did not have a billet shaft installed during my rebuild and unless you are considering high horsepower I can't see a need. Just my opinion and Bill K. can better answer your needs in this area.

Dave

 

[klaybus]

Just trying to put it back on the top for more exposure... .



Clay

 

[JGarcia]

I can testify to the same experience as Big-D. I also pull a 3 horse gooseneck trailer (approx. 8500 lbs), and had the DTT install about 33,000 miles ago, before they offered the billet upgrades. The Pac Brake was installed at the same time. So far, no problems, of course take off with livestock tends to be a little more tame than probably many TDR members might practice.



JRG

 

[jelag]

The stress on the engine or transmission during braking is no more stress than when you press the go pedal... .



There is heat build up... but again no more than the engine or transmission sees during hard acceleration.



The design of the exhaust bake is to make the engine do some of the work by turning the rolling engery to heat. . and removing that heat with the cooling system... .



In general the exhast brake, mounted direct to the turbo will usually generate about 90% retarding HP to engine HP... so if you have a 300 HP engine you can expect about 270 retarding HP.



I own a 04 3500 quad cab dually 4x4 and pull a service trailer with up to 24K lbs... this is trailer weight alone... not combined.



Going down a 6% grade in 4th or 5th gear the exhaust brake won't hold 100% of the load (truck and trailer) however at a load of below about 18K my truck and exhaust brake will hold that load.



Those of you that run an automatic need some way to lock the pressure in the torque converter to get this kind of results... but it can be done... .



Hope I've helped...



Jim