This is real Gear Head Porn…we just reworked our Diesel engine development dynamometer. It had a limit of 4000 rpm and 3000 lbft. We just took that to 7000rpm and 3600 lb-ft. At Banks our Hot Rodding is like the plague, it infects everything in this place! And that’s exactly why we all show up every day.
I’ve got special kind of sickness, it’s a disease that started in LA 100 years ago, back in the teens…it seems that I’ll race anything with an engine. At Banks we’ve been very lucky. We build that luck in the shop. We load the drivers gun and most times, he hits the target. Here’s a small part of how it’s done.
Using a Taylor water brake power absorber we redesigned the input shaft and installed ceramic ball bearings and balanced the whole thing including the dyno rotor in our balancing shop insuring smooth operation to 7000rpm.
The front of the unit, the black parts, are all Banks. We want the dyno to act like a transmission and mount directly to the engine and also our dyno engine cart. A two inch 10 spline feeds the power thru two additional ceramic bearings to the absorber. We’ve done a variety of “bell housings” to fit the SAE 3 bolt pattern, our VM Motori/Eco Diesel bell housing and the ever popular Chevy pattern. We route power from the engine thru a sprung drive plate. This decouples the dyno rotating mass and gives us the ability to measure crankshaft torsional twist data for use designing and validating our viscous crankshaft damper assemblies.
Our design uses a sprung two stage drive plate that can be configured for a wide range of torque inputs up to our 3600 lbft capacity. The aluminum carrier assembly mounts to the engines flywheel or flex plate, pilots into the crankshaft and provides a pilot bearing for our dyno input shaft. There are a variety of these carriers to mount to all our engine types including our twin turbo gasoline engines which seem to overwhelm our SuperFlow Dyno, in the cell next door. The SuperFlow can’t handle the torque our big gasoline turbo builds are making. We can squirt this Dyno to 8000 rpm if needed.
Each engine dyno cell at Banks has dual 10″ diameter exhaust lines, this line is equipped with water cooled, optical exhaust opacity sensors. My large McDonalds Coke is to give you a sense of scale.
Here’s the Banks 10″ Monster Exhaust coming from one of our engine dyno cells. This produces no measurable back pressure and has the ability to dyno some real serious engines. This system dual has 10″ cutouts below the mufflers for running Fuel Motors.