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Eco-Bricks - 35+mpg club

Sadly the days when I got 45-50mpg out of my 360 (B200) are long, long gone...courtesy of R-Sport. Shame there's no way of "proving" it now, other than a picture of it with 300 miles on the trip meter, and half a tank of fuel left.

cheers

James
 
my V70 2.5TD gets 41.27mpg on my daily run. Not highway.
and once or twice a week i RACE it down to the fire station (2km away from home, onboard computer stays at 50L/100km 90% of the time (city driving)


<iframe width="425" height="350" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="http://maps.google.be/maps?f=d&source=s_d&saddr=Fortstraat&daddr=50.83046,3.55668+to:50.72302,3.32759+to:Blauwe+Brugstraat&hl=nl&geocode=FT7kBwMdWh43AA%3BFXycBwMdSEU2ACnhfkhi_hDDRzHaVhnUmyklrg%3BFcz4BQMdZsYyACmtB9qf3SPDRzFr3U-cRXV9Bw%3BFfLoBQMdYIQyAA&sll=50.806369,3.533134&sspn=0.109131,0.220757&vpsrc=6&mra=dpe&mrsp=1&sz=12&via=1,2&ie=UTF8&ll=50.806369,3.533134&spn=0.109131,0.220757&output=embed"></iframe><br /><small><a href="http://maps.google.be/maps?f=d&source=embed&saddr=Fortstraat&daddr=50.83046,3.55668+to:50.72302,3.32759+to:Blauwe+Brugstraat&hl=nl&geocode=FT7kBwMdWh43AA%3BFXycBwMdSEU2ACnhfkhi_hDDRzHaVhnUmyklrg%3BFcz4BQMdZsYyACmtB9qf3SPDRzFr3U-cRXV9Bw%3BFfLoBQMdYIQyAA&sll=50.806369,3.533134&sspn=0.109131,0.220757&vpsrc=6&mra=dpe&mrsp=1&sz=12&via=1,2&ie=UTF8&ll=50.806369,3.533134&spn=0.109131,0.220757" style="color:#0000FF;text-align:left">Grotere kaart weergeven</a></small>
 
Not quite 35 mpg...

the 740 gets between 10 and 11 l/100 km (21-24 mpg us) but it's the wife's shopping car.

The 940T is my commuter, 80+ km per day, about 1/2 highway, remainder urban, 50 lb in the trunk.
I am now getting 8.80 l/100 (26.7 mpg us) avg of last 4 tanks. This will drop to about 10.5 l/100 (22 mpg) in the winter.

I've got an MPGuino trip computer to help. I can easily get 7.5 l/100 (31.3 mpg) on steady 105 kmh cruise. I've done 6.7 l/100 or 35 mpg on occasion. It's amazing watching how stop and go kills mileage.

940T (302,000 km) is not stock - head shaved .032, .028 squish, stock valves unshrouded, ported just to clean up the casting, stock turbo with MBC at 10 psi, TLAO chips, ignition mod at +3*, autobox, IPD sways, caster and camber mods, 195x65 tires at 44psi.
Love driving this car.
 
I'm the opposite of this right now. The 245 is running super duper rich, I gotta figure out what that problem is, but I suspect the AMM. It just cooked the cat, I cut it out and just welded a pipe in (no emissions here). I've got an LH 2.2 computer and AMM, I might just swap to that soon and see if my problem doesn't go away.

Trying to find a G80 for some 3.73s too so I can drop those highway rpms a little from the 4.10s in there now. I thought about going to 3.54s or 3.31s, but I'm wondering if that will get to the point where I could start hurting gas mileage, especially if I end up living in a hilly area (looking at UC Boulder for grad school), any thoughts?
 
doperide07 said:
I'm the opposite of this right now. The 245 is running super duper rich, I gotta figure out what that problem is, but I suspect the AMM. It just cooked the cat, I cut it out and just welded a pipe in (no emissions here). I've got an LH 2.2 computer and AMM, I might just swap to that soon and see if my problem doesn't go away.

Trying to find a G80 for some 3.73s too so I can drop those highway rpms a little from the 4.10s in there now. I thought about going to 3.54s or 3.31s, but I'm wondering if that will get to the point where I could start hurting gas mileage, especially if I end up living in a hilly area (looking at UC Boulder for grad school), any thoughts?
Click to expand...

Use your gears.
Put it at 2800 - 3000 rpm to climb and take what the speedo gives you.
 
I'm not positive but I think my '83 245 DL has 3.31 gears. I've been consistently getting 32-33mpg cruising at ~65mph. One of my goals for the car is to improve it so that I get 40mpg @ 60mph. That's my target and I'm going to do it!
 
My '90 245 M47 trans LH3.1 gets 26/29 city/highway stage zeroed. I assume the lean-runnin' 3.1 injection has a bit to do with that, along with the M47 trans. I feel pretty happy with that though - it is on par with the CAFE standards from last year.

It won't be for long since they are bumping CAFE up to 54.5 mpg by 2025...
 
mtd240 said:
...bumping CAFE up to 54.5 mpg by 2025...
Click to expand...

1960 era - However, the most astounding demonstration was the record set in the Pure Oil Economy Trials, another NASCAR-supervised event: 51.281 miles per US gallon (4.5868 L/100 km; 61.586 mpg<sub><small>-imp</small></sub>), which AMC sagely noted, "No car owner should expect to approach in everyday driving."<sup id="cite_ref-stuff5860f_11-1" class="reference">[12]</sup>


PS: If you want to evaluate your mileage, do like they did back then, drive some 2,000 miles.

In the 1960 Mobilgas Economy Run, a Custom two-door sedan returned 28.35 miles per US gallon (8.297 L/100 km; 34.05 mpg<sub><small>-imp</small></sub>) over a route of more than 2,000 miles (3,200 km), finishing first in the compact class. Further proof of the American's exceptional fuel economy came when an overdrive-equipped car driven coast to coast under NASCAR's watchful eyes averaged 38.9 miles per US gallon (6.05 L/100 km; 46.7 mpg<sub><small>-imp</small></sub>).
​
 
The Mobil Economy Run is used to explain the claims made for United States Patent # 3937202 - an "Economy driving aid"<sup id="cite_ref-5" class="reference">[6]</sup>:
<dl><dd>"... The experience obtained by skilled drivers in the Mobil Economy run indicates that for best fuel economy, a car should be operated at nearly constant speed in the range of 30 to 50 mph. Rapid accelerations or decelerations and operation at (or near) full throttle should be avoided. To practice for economy runs, skilled drivers used special instrumentation to determine the operating conditions for best fuel economy. This instrumentation usually included a vacuum gauge to indicate intake manifold vacuum, a special odometer to measure distance traveled to hundredths of a mile, and a burette to measure gasoline usage. However, instrumentation of this type is extremely complex for the normal driver and is additionally quite expensive. ..."</dd></dl> <dl><dd>"... It is an objective of this invention to provide a signal to the operator of a variable speed, variable power internal combustion engine when the engine is being accelerated or decelerated too fast, in addition to a signal when the engine is being operated at too high or too low a power output. ..."</dd></dl>
 
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