Exhaust brake with auto transmission.

[joecool911]

What needs to be done to a truck with automatic transmission to take advantage of an exhaust brake? Not looking for a high dollar solution. But rather minimum suggested mods.

[Mopar1973Man]

Lock up controller usually supplied with the exhaust brake. Then you'll only get exhaust brake function in 3rd and 4th gear. There is a valve body mod that allows lock up in 2nd gear so you could use the exhaust brake in 2nd gear too.

[Ed ke6bnl]

Lock up controller usually supplied with the exhaust brake. Then you'll only get exhaust brake function in 3rd and 4th gear. There is a valve body mod that allows lock up in 2nd gear so you could use the exhaust brake in 2nd gear too.

I also have a momentary switch at the gas pedal the activates the EB when throttle is released and turns off the EB when you are on the throttle

[drag racer]

I am only familiar with the Banks brake, which is what I installed.  Their kit comes complete with electronic and pneumatic controls fully integrated into the vehicle and is engineered so you don't have to think about it.

[YabbaDoo]

Question...Because a curious Blonde wants to know... My truck came with an exhaust brake, D-Celerator by US Gear (not sure, but I think it was done not too long after the truck was new judging by the model of exhaust brake and calling US Gear,  they said it was from the late 90's) Does that mean the exhaust springs have been upgraded most likely? The guy I bought the truck from said it was on the truck when he bought it... He used it to haul a 5 car hauler for business. I did use the exhaust brake to test it out empty on my Oct trip to VA last year and it seemed to work fine..

[MnTom]

Your 12v most definitely would have upgraded exhaust springs Yabba. The stock springs are only good to about 35 psi before they get pushed open by the back pressure. 60 pound springs are the normal upgrade.

[YabbaDoo]

Good!! I was hoping they were done already... My next project now that I have Bleu up and running are 40 HP injectors for Yabba!!! as well as a much needed valve seat adjustment...  Not sure which will have the winning straw for the VA trip in July  On one hand I love the way Bleu goes across country but also Love my Yabba Doo and he can serve as a camper as well!! Decisions, decisions...

Edited May 26, 2014 by YabbaDoo

[pepsi71ocean]

What needs to be done to a truck with automatic transmission to take advantage of an exhaust brake? Not looking for a high dollar solution. But rather minimum suggested mods.

 

bare minimum would be a good triple disk tc, a billet flexplate, and input shaft, andf a good shift kit/valve body, preferabally one with lock up in all forward gears.

 

this will give you the braking power and the reliability to know you won't break anything important, and breaking either the flexplate or the input shaft usually results in a junk trans