Quote:
Originally Posted by eplurubus
The engine brake on my Mack sucks big time. If I understood the mechanic correctly, the reason it sucks is because the kit that I have goes only to two cylinders.
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He may have said that due to mechanical issues with the engine brake it is currently only working on 2 cylinders.
Both the "Dynatard" (Mack's own proprietary engine brake) and the Jacobs engine brake are designed to brake on all 6 cylinders of a Mack 6 cylinder engine.
The Jake brake on a Mack usually had a "Hi/Lo" switch which would allow 6 cylinder braking in the "Hi" position, and 3 cylinder braking in the "Lo" position.
The Dynatard was 6 cylinder braking whenever it was activated.
Jake Brake is the better of the 2 setups.