Posted 7/10/2017 16:31 (#6117283 - in reply to #6117074) Subject: RE: Exaust brake, how effective are they?
NW Washington
Here is info from PacBrake on how the butterfly valves work and are controlled to prevent over pressuring the engine when the valve is closed. http://pacbrake.com/exhaust-brakes-2/
I know of at least one CIH 4x4 that has a real Jake brake on it for pulling grain carts on steep Palouse grain fields in N. Idaho. That little brake on the driveshaft is not up to holding back a loaded cart on a steep downgrade.