mvbeggs
Adventurer
I am a new owner of a 2012 Tacoma. As some of you may know I am building the Tacoma as an overlanding rig. After discussing gearing in some other threads gearing-and-255-85-tire several Tacoma owners have elected to gear 4.56 or 4.88. This gearing gets the 4.0L in the 2500-2700rpm range,at 75mph, where the 4.0L develops about 175-190 ft lbs of torque. This seems to be the sweet spot for the 4.0L.
I like to run 85mph across the flatlands of Kansas and Nebraska which at 4.56, or 4.88 gearig, puts my engine speed above my self imposed limit of 2600rpm.
I found a dyno curve of a TRD supercharged 4.0L. The Dyno curves appear to turn the supercharged 4.0L into a low end torque machine. Essentially a supercharged 4.0L develops 270 ft lbs of torque at 2000 rpm. (see curves below)
My question, what is the opinion regarding supercharging instead of regearing? Could I have the quiet, low reving, economies during flatland highway travel at 85mph while kicking in the supercharger when the torque and power is need to climb grades, at altitude, while towing the Chaser?
I'd also like to hear the experiences of TRD supercharger users regarding maintenance and reliability of the supercharger.
Here are the dyno cuves I found on TacomaWorld.com and CustomTacos.com
RPM curves of various gearing options:
I like to run 85mph across the flatlands of Kansas and Nebraska which at 4.56, or 4.88 gearig, puts my engine speed above my self imposed limit of 2600rpm.
I found a dyno curve of a TRD supercharged 4.0L. The Dyno curves appear to turn the supercharged 4.0L into a low end torque machine. Essentially a supercharged 4.0L develops 270 ft lbs of torque at 2000 rpm. (see curves below)
My question, what is the opinion regarding supercharging instead of regearing? Could I have the quiet, low reving, economies during flatland highway travel at 85mph while kicking in the supercharger when the torque and power is need to climb grades, at altitude, while towing the Chaser?
I'd also like to hear the experiences of TRD supercharger users regarding maintenance and reliability of the supercharger.
Here are the dyno cuves I found on TacomaWorld.com and CustomTacos.com
RPM curves of various gearing options: