I was wondering what provision there is for engine braking on the various diesel solutions for the classic motorhome.
Exhaust brake? Jake? ???
What's on the stock isuzu?
Cummins?
Duramax?
To the best of my knowledge none of them come with exhaust brakes as stock. It is my understanding that only Cummins will work with a true Jake brake. The others require an exhaust mounted brake. Pac brake and Banks Brake are two that come to mind. I have also seen electric retarders and driveshaft brakes, but they aren't as common. The electric retarders can be found on the older Blue Bird Wanderlodges.
Aaron
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....so many Airstreams....so little time...
WBCCI #2449 AIR #2495
Why are we in this basket...and where are we going
Those with the Ford Tow Haul automatic transmission or the Allison automatic in the GM products get a surprising amount of braking when operating in the tow/haul mode through the transmisson. The main thing about driving in the mountains is to slow down and use your lower gears whatever type of transmisson or additional braking one might have.
GStephens
Cummins engine brakes are called Jackebson engine brake, better know'n as the jackeb Brake. This is how they work simply stating, Energizing the brake converts a diesel engine into a energy absorbing air compressor, this is done by opening exhaust valves near the top of the compresion stroke, releaseing the compressed charge into the exhaust, the energy used to compress the charge without a firing cycle acts as a brake.. engine brakes are made for steep grades downward decent, to save on drum wheel brakes, and the possibility of over heating drum wheel brakes on a downward decant,whitch is also know'n as smoked the brakes, because of brake shoes overheating. Heat will glaze brake shoes to the point where you will have no brakes. I know Isuzu has exhaust brakes so call a dealer and ask them about it.
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