stroker101

fairly new to this cummins diesel. it appears there is a butterfly valve on the exhaust side of the turbo. what is it used for? i know on my 97' PSD(previous trk) it was used as a warm up device.

thanks for any info on this

TBittner

that would be an exhaust brake. and yes it does help warm the truck up faster especially in colder temps.

if it has a cylinder mounted vertically on top of the elbow portion of the exhaust its probably the jacobs exhaust brake

t-boe

It's also used to help slow the truck down.

stroker101

so this is a "stock" item from cummins/dodge? it doesn't look to be an aftermarket item. there is a rod connected to it and an actuator on the other. can't see what controls the actuator. the engine still has the stock turbo, but has the 5" mag. exhaust(previous owner install)

if it was an exhaust brake, shouldn't i hear the restriction of the exhaust when it closes? what controls it?

thanks

Belgrath04

Correct me if I am wrong but almost positive there was not a "stock" brake avalible untill the 6.7L. That is not to say its not a dealer installed option, just not one avalible from the factory.

TBittner

it is an option availale from the factory. there should be a switch for it on the shifter some where

stroker101

no switches on the shifter other than the tow haul / OD off switch. and no other switches mounted anywhere else in the truck.

this bothers me not knowing. thanks to all helping me better understand.

hoffdog

If you have an auto i dont think you could get an exhaust brake factory till the 6.7. 06 had to option of the jake brake and had a button on the shifter along with the badge "jake Brake" below the cummins emblem.

stroker101

im going to get a pic of it and post it to help identify what i have. i sure appreciate the help.

stroker101

here is are pics of the turbo and butterfly vlv. hopefully some one can identify this and tell me what exactly it is. thx for the help!

northernwheeler

That would be your wastegate, electronically controlled on the '06 models

stroker101

is there a "link" to a explanation on how this works? or can someone explain it? not comprehending how this set up releives boost pressure. thks!