Banks Power Ford Trucks: (Diesel ’83 - 93 6.9 & 7.3L) Forced Induction- Sidewinder turbo system (early-body) 6.9L & 7.3L - Manual (Page 16)

CHeCking engine PerFOrManCe
Use your pyrometer (exhaust temperature gauge) to
monitor your engine’s operation. at idle, egT (exhaust
gas temperature) will be very low, perhaps only 150°F.
as the throttle is opened for higher speeds and greater
loads, the egT will rise. The highest egT will be seen
under maximum load at full throttle, such as climbing
a steep grade with a heavily laden vehicle. Use caution
if your egT approaches 1000°F, with 1050°F being the
safe MaxIMuM!
if the vehicle exceeds those egT levels under these
conditions, downshift the vehicle to reduce the load,
or back off the throttle. if frequent high egT levels are
encountered, the fuel delivery of the injection pump
will have to be reduced by backing out the allen-head
screw in the injection pump as indicated in the Pump
adjustment section (step 5).
We recommend engine oil temperature be below 240°F,
as measured in the oil pan (an optional oil temperature
gauge is available from gale banks engineering).
Optimum oil temperature is 230°F. Continuously high oil
temperature is indicative of the need for an additional
oil cooler. if you do not have an oil temperature gauge,
watch your oil pressure. Falling oil pressure under a
heavy load is caused by rising oil temperature. Use cau-
tion.
We recommend that coolant temperature, also,
should not exceed 220°F.
Oil temperature, Turbo boost Pressure, diesel
Tachometers and other instruments and accessories
are available from gale banks engineering.
Important! banks Wastegated sidewinder turbo-
charger system utilizes a wastegate to control the
maximum intake manifold boost pressure. although
injector pump calibrations vary with truck models
and may provide slightly different maximum boost
levels, the wastegate control point is pre-set at our
factory, and any unauthorized adjustment above this
pressure may result in serious engine damage.
The factory wastegate calibration is the only wastegate
setting that is certified as emissions legal.
OPeraTing CHaraCTerisTiCs
Your banks sidewinder turbocharged diesel engine
should exhibit the following operating characteristics:
Cruise Conditions (constant 60mph on level road): egT
should be approximately 400°F to 600°F; boost gauge, if
so equipped, should read 1 to 2 pounds.
High load Conditions (uphill with heavy load): egT
should typically be 900°F to 1000°F, with 1050°F as a
safe maximum.
it is important to realize that diesels, unlike gasoline
engines, run cooler with additional air. exhaust gas tem-
perature rises as more fuel is added. Turbocharging a
diesel typically lowers the egT. normal cruise condition
egT for a normally aspirated (non-turbocharged) die-
sel engine is typically 600°F to 800°F. as noted above,
cruise condition egT for a turbocharged diesel is typical-
ly 400°F to 600°F. This lower egT translates directly to
lower piston and valve temperatures, and significantly
increased engine life.
it is also important to understand that turbocharged
boost pressures are load related, that is the turbocharg-
er makes boost only when called upon to do so (by load
requirements). The turbo will not “make boost” with the
transmission in neutral, but makes boost proportional
to the load. long uphill grades, with a heavy load, will
result in maximum boost. in other words, the turbo
makes boost only when it is needed. This characteristic
makes turbochargers so attractive that the vast major-
ity of long haul trucks and off-road earth moving equip-
ment are equipped with turbochargers. Turbocharging
typically results in more power and torque, better fuel
economy and increased engine life.
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