has anyone ever herd of having to have something special for the auto tranny for a pcbrake exhaust brake to work. the guy i sold the pacbrake to said the shop that is installing it told him to get some sort of part so it doesnt eat the tranny, What the hell, anyone know ore were to get one?

 

Wtf never heard of that there is a microswitch that will keep it from engaging when you push the throttle but other then that unless they're talking about a torqloc setup from bd I ain't got a clue

 

For a exhaust brake to work efficently on a automatic transmission you should have a T/C lock up switch.One that wil allow manual locking/unlocking of the converter and make the exhaust brake function properly.

 

well i know he wants to use a torge lock on the tq converter to lock for full torque. autos on these trucks are greek to me, is that basically what is needed

 

Yeah alot of guys will say "a built trans and a controller". I have a full on DTT and a Controller and can argue after many a conversation that the ONLY difference between mine and a stock dodge exhaust brake For "beefeyness" are my input shaft and drum are Billet. The converter is on the "Back side" of the veins when decelerating. You can have a omega awesome 150% 900 disk 4000 billet cover converter and as long as its built to make a truck go forward there should be no veins inside it facing the opposite direction to slow it down.

The only thing that is going to apply any sort of braking force between the engine and rear tires is by locking the converter and holding it. This is done via a "Controller" like I have (Dtt Smart Controller ) or a BD TorqueLoc, Suncoast , or I think Bully Dog or TST makes one too. Some are fully programmable like 2nd gear hold, hold down to 18mph, when lockup engages on accel and decel, what speed you want OD to come in and to knock it out. They range from like 300-900 bucks depending on bells and whistles.

 

well i dont know dittly crap about these autos, this is going to be for the guy i sold the brake to

 

Brandon,theres a shop i take my truck to for all my major stuff.I asked him about an exhaust brake for my truck and he told me about a thing needed on the auto tranny for the exhaust brake to work.I know it's not the torque lock.I'll call him on monday morning and ask him about it and pm you back.

 

thats trevor that would be great.

 

BD's torque lock actually keeps pressure on the Throttle Valve, This will cause more firm/later shifts, and also keep increased line pressure on the clutch packs. A lock up switch is practically a necessity on an auto running an exhaust brake. If you don't have one, you will just free wheel and won't slow down at all.

It is also recommended to install a better input shaft as well.
Sean

 

i think that you guys are right! there is a write up in diesel power mag last month about this! if you got the mag look it up, it is in the "question and answer" section!