Engine/Transmission (1994 - 1998) Exhaust brake for '98 12v with automatic trans.

[JHenry]

Can anyone enlighten me about the available exhaust brakes for a '98 with an automatic? I understand Pac Brake sells one that requires a Torque converter lockup kit. Thanks

 

[FrostG]

I believe that any exhaust brake will need to have a TC lock to be effective. You may also want to replace the Exhaust valve springs with 60 lb springs so that the back pressure from the brake doesn't cause a valve to be open at the wrong time.



FrostG



98 12V 5 speed

 

[JHenry]

Okay. Thanks. Now what can you tell me about the TC lockup kit? Does it require removal of the transmission and torque converter? How does it install?

 

[DCreed]

do a search. the job is easy, costs about $4. TST has it on their site I think.

 

[ScottLewis]

Without a T/C lockup of some kind, all you do is slow down the engine. Several companies sell TC lock up kits or you can install a "mystery switch" as DCreed noted. .

I used a BD brake and AutoLoc. I later tried a BD TowLoc that closely emulates the transmission functions of the '06 Jake I have now. It didn't work too well with my CA version truck because of the smog stuff. I liked the way it performed but it kept setting off a CEL about the T/C lockup. I pulled it before selling my '98 and still have it in the original box. Research it and if you're interested, PM me.



Dan

 

[Dieseldemon]

Very simple to make your own lockup switch An on off switch a scotchlock and a 30 to 35 OHM resistor