Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - The Amocat- 2005 Tacoma

aardvarcus · 08-06-2014, 10:54 AM

Edit:
To make this thread easier to follow and so that you can bypass my rambling, I decided to post an index up at the front for you to link to completed major projects on the truck. Also I have the original and a recent picture of the truck so you can see the changes that have been made.

Rubber Air Dam:
http://ecomodder.com/forum/showthrea...tml#post454423

Initial Half-Aeroshell Construction:
http://ecomodder.com/forum/showthrea...tml#post473102

Finished Half-Aeroshell:
http://ecomodder.com/forum/showthrea...tml#post480010

HVAC Air Intake Pest Screen:
http://ecomodder.com/forum/showthrea...tml#post481678

Electric Fan Construction/Swap:
http://ecomodder.com/forum/showthrea...tml#post483654

Fender Flare Removal:
http://ecomodder.com/forum/showthrea...tml#post494844

Full Aeroshell:
http://ecomodder.com/forum/showthrea...tml#post511880

Back to the regularly scheduled post:
---------------------------------------------------------
Hello all,

Figured it was time to start my own build thread for this truck. Truck is a 2005 Toyota Tacoma Access Cab, 2.7L 4 Cylinder, 5 Speed Manual, 4x4. The truck is my daily driver, which includes long commutes to work, trips hauling construction materials, and driving off road. I engage 4x4 an average of 3 times a day to navigate unpaved roads. My current baseline from my fuel log is 26.7 MPG, based on 23 fill ups.

My first goal is to consistently exceed 30 MPG, while maintaining or improving the truck’s capabilities. I plan on achieving most of this through aerodynamics, as the truck has a factory Cd of Cd 0.394.

Mods that I have already done are: First mod was switching all long term fluids to Amsoil synthetic, including front diff, rear diff, transmission, and transfer case, and changing engine oil to Mobil 1 synthetic. Second mod was changing the tires, went to Michelin LTX M/S2 LT 235/85R16 mounted on factory Toyota 16” alloys. (Note factory was P 245/75R16 on steel wheels.) This nets about 0.5” ground clearance, 4% gearing reduction, and corrects the speedometer to within 1MPH at 55MPH. Going from P rated tires and steel wheels to LT rated tires and alloys only netted a 5lb increase in weight, but it increased the rotational inertia of the wheel tire combo by 15% due to the weight being farther from the center.

The next step for this truck is an aerodynamic bed cover.

08-06-2014, 10:54 AM	This thread is in the EcoModder Project Library \| #1 (permalink)
aardvarcus Master EcoModder Join Date: Apr 2012 Location: Evensville, TN Posts: 676 Deep Blue - '94 GMC Suburban K2500 SLE 90 day: 23.75 mpg (US) Griffin (T4R) - '99 Toyota 4Runner SR5 90 day: 25.43 mpg (US) Thanks: 237 Thanked 580 Times in 322 Posts	The Amocat- 2005 Tacoma Edit: To make this thread easier to follow and so that you can bypass my rambling, I decided to post an index up at the front for you to link to completed major projects on the truck. Also I have the original and a recent picture of the truck so you can see the changes that have been made. Rubber Air Dam: http://ecomodder.com/forum/showthrea...tml#post454423 Initial Half-Aeroshell Construction: http://ecomodder.com/forum/showthrea...tml#post473102 Finished Half-Aeroshell: http://ecomodder.com/forum/showthrea...tml#post480010 HVAC Air Intake Pest Screen: http://ecomodder.com/forum/showthrea...tml#post481678 Electric Fan Construction/Swap: http://ecomodder.com/forum/showthrea...tml#post483654 Fender Flare Removal: http://ecomodder.com/forum/showthrea...tml#post494844 Full Aeroshell: http://ecomodder.com/forum/showthrea...tml#post511880 Back to the regularly scheduled post: --------------------------------------------------------- Hello all, Figured it was time to start my own build thread for this truck. Truck is a 2005 Toyota Tacoma Access Cab, 2.7L 4 Cylinder, 5 Speed Manual, 4x4. The truck is my daily driver, which includes long commutes to work, trips hauling construction materials, and driving off road. I engage 4x4 an average of 3 times a day to navigate unpaved roads. My current baseline from my fuel log is 26.7 MPG, based on 23 fill ups. My first goal is to consistently exceed 30 MPG, while maintaining or improving the truck’s capabilities. I plan on achieving most of this through aerodynamics, as the truck has a factory Cd of Cd 0.394. Mods that I have already done are: First mod was switching all long term fluids to Amsoil synthetic, including front diff, rear diff, transmission, and transfer case, and changing engine oil to Mobil 1 synthetic. Second mod was changing the tires, went to Michelin LTX M/S2 LT 235/85R16 mounted on factory Toyota 16” alloys. (Note factory was P 245/75R16 on steel wheels.) This nets about 0.5” ground clearance, 4% gearing reduction, and corrects the speedometer to within 1MPH at 55MPH. Going from P rated tires and steel wheels to LT rated tires and alloys only netted a 5lb increase in weight, but it increased the rotational inertia of the wheel tire combo by 15% due to the weight being farther from the center. The next step for this truck is an aerodynamic bed cover. Attached Thumbnails Last edited by aardvarcus; 04-19-2016 at 04:10 PM..