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Old 06-08-2012, 04:54 PM   #1 (permalink)
Join Date: Sep 2009
Location: New Kensington PA
Posts: 69

Big Blue - '94 Ford F-150 shortbed
90 day: 15.71 mpg (US)

Mexico Nuevo - '84 Honda V45 Sabre
90 day: 36.67 mpg (US)
Thanks: 4
Thanked 10 Times in 7 Posts
Been away a while, back for more fun ;-)


I used to post here a few years ago, when I owned a '98 contour.

Alas, that car has gone to the "Big Shredder in the Sky," and it's been a while since I had a car I intended to hold onto long enough to mod.

Now, I've got two vehicles: a '94 F-150 (2X4, shortbed, MT, I-6) and a '84 V45 Honda Sabre. Getting roughly 15 combined from the truck, and 40 from the bike.

Looking for ideas on how to mod the straight-6 for better MPG. (I mean, the engine has been around roughly since the invention of the wheel, so there's gotta be a fair amount of accumulated knowledge out there!) I'd like to get an honest 20 highway vs. my current 17 (although I try to only use "big Blue" for local, work-related stuff).

First mod will probably be a partial Kammback off the roof (hinged to allow full use of bed as needed).

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Old 06-09-2012, 07:44 PM   #2 (permalink)
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Mustang Dave's Avatar
Join Date: May 2009
Location: Northern Arizona - It's a DRY cold..
Posts: 661

Trigger - '07 Ford Mustang V6 Premium Coupe
Team Mustang
Sports Cars
90 day: 31.79 mpg (US)

Big Red (retired) - '89 Ford F-250 4wd Custom
90 day: 18.13 mpg (US)

Big Red II - '13 Ford F-150 FX4
90 day: 18.56 mpg (US)
Thanks: 156
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Welcome back!
Fuel economy is nice, but sometimes I just gotta put the spurs to my pony!

Originally Posted by thatguitarguy View Post
Just 'cuz you can't do it, don't mean it can't be done...
Originally Posted by elhigh View Post
The presence of traffic is the single most complicating factor of hypermiling. I know what I'm going to do, it's contending with whatever the hell all these other people are going to do that makes things hard.
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Old 06-09-2012, 07:51 PM   #3 (permalink)
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Join Date: Jul 2008
Location: Langley, BC
Posts: 1,225

Colorado - '04 Chevrolet Colorado
90 day: 22.98 mpg (US)
Thanks: 190
Thanked 271 Times in 165 Posts
Welcome back!

You are probably on the right track starting with aero. Make sure you do aero mods over and under the truck. Keep the cruising speed down, if possible.
Find the highest/tallest geared rear end that you can.
Get a manual/OD transmission if it doesn't already have one.

How far are you willing to go? Get some high CR pistons. Get an economy cam & time it for efficiency.

While it's apart, maybe omit a couple of pistons & seal off the oil holes in the crank. I'm not saying it will run well, but I delegate you to be the first to try it!

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