DIY exhast brake

DonF350 · #1 (**permalink**) 10-11-2011, 04:14 PM

i have an auto 96 f350 id like make a diy brake on it..has anyone else done this before and is it safe? does anyone have a write up with pictures?

**351fifty** · #2 (**permalink**) 10-11-2011, 04:36 PM

Many have done it and I have a write up saved somewhere for it, its best with a manual tranny to keep the rpm's up so you won't float a valve, other wise you should go ahead and do the tc lock up switch too so you can keep it locked when you use it also to keep the valves from floating. Good luck BTW

DonF350 · #3 (**permalink**) 10-11-2011, 04:57 PM

what does it mean when ur tc is locked up?

**351fifty** · #4 (**permalink**) 10-11-2011, 08:40 PM

Torque converter locked up, keeps the tranny engaged to the motor so that engine stays at rpm instead of idling down when you slow like when you go to stop.

DonF350 · #5 (**permalink**) 10-12-2011, 01:05 PM

alright makes sense. if anyone has a write up with pictures and or color of the wires i need to work with would really help.

**351fifty** · #6 (**permalink**) 10-12-2011, 01:17 PM

Try sending a pm to garrett (weareweird69) he sent it to me over on ofs, can't do it rite now from my phone, and for the tc lock up look in the 7.3 tech files, I beleive their is one there for it.

**ol_Blue97** · #7 (**permalink**) 10-12-2011, 02:30 PM

are u sure bout the lifters floating from this..... i thought that was with a real jake brake where it releases the compression.... not from EBP. if it was to put the engine in danger why do they sit with the valves closed for hours if you let it, in the cold. i drove around all day one day it it was closed the hole time...... due to my stuck open theremostat but thats besides the point. i may have to dig into this one a little further

**351fifty** · #8 (**permalink**) 10-12-2011, 03:44 PM

I've been told by several guys that it would float them, hell I think garrett told me, because of it being used as an exhaust brake and the engine not having enough pressure compared to back pressure. Not 100% but its what I've been told and i havent done it yet bacause I was gonna do the tc lock up first just haven't gotten around to it yet

atvrider93 · #9 (**permalink**) 10-12-2011, 04:51 PM

TC lockup wont keep it from floating a valve. TC lockup just makes it so it actually does something without just idling down

jesilvas · #10 (**permalink**) 10-12-2011, 05:07 PM

Jake used to have a diagram on here.
TC Control Switch Writeup
Maybe PM and see if he still has it.

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