Engine Brake

[RSchwarzli]

Hi,



In general, what is the differance between a exhaust brake, Jake brake, decompretion brake, etc. ? What does a big rig have that makes the neat farting sound? Can what the big rigs have be put on our engines? Thanks.



Robert

 

[Paychk]

A Jake or Jacobs engine brake is a mechanical means of opening the exhaust valve at the top of the compression stroke and results in braking and the Famous Jake sound. An exhaust brake is a butterfly valve in the exhaust system that generates back pressure to retard the engine and drive train. A true Jake cannot be implemented on the "B" without a complete redesign of the head and valve train, that is why the exhaust brake was developed.

 

[RSchwarzli]

Does the exhaust brake give a neat sound too?

 

[Paychk]

Not really, but it sounds great on a 6 % grade with 18,000 pounds pushing you down hill.

 

[RSchwarzli]

Thanks so much.



Robert