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Old 02-03-2013, 03:33 PM   #9 (permalink)
Master EcoModder
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Join Date: Jan 2013
Location: ohio
Posts: 306

Tetanus - '95 Geo Tracker 4WD Base
90 day: 29.43 mpg (US)

300 - '82 Suzuki GS300 L
Last 3: 60.78 mpg (US)

Jeep - '98 Jeep XJ Cherokee Limited
90 day: 12.82 mpg (US)
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Originally Posted by _MADMIKE_ View Post
Going to try to improve on the improbable.
1987 Oldsmobile Cutlass one of the last of RWD body on frame midsize V8 coupes.
140 odd horsepower of smogged to death goodness pushing ~3500lbs
It may be a hopeless challenge but someones got to try

The good.
Fairly sleek body design, can easily reach triple digit speeds.
The bad.
Whoever thought an electronic carbuerator was a good idea needs their head examined.
The ugly.
Can you believe GM stuck 2.14:1 final drives in these cars. 0-60 with a sun dial, but cruising with traffic and the tach staying well below 2Krpm always gives me a fuzzy feeling.

Original EPA was 17/23, revised is 15/21. Is 18/25 too far off, maybe 20/27.
Lets trim some weight off this piggy and see what she can do.
First off welcome to the forum. Second don't sell it... Especially if there isn't anything wrong with it! The first thing you should do is make sure your vehicle is tuned up and happy. Air filter, plugs, wires, dizzy cap, rotor, carb adjustments, etc...

If you haven't already started doing so start keeping detailed records of your fill ups and mileage. You can calculate MPG and get a ballpark average. The first mod you should think about is to do a "driver mod". See the 100+ hypermiling tips we have here..100+ Hypermiling tips

Since you have a carb try a vacuum gauge and note what readings you get around town, on hills, cruising and on the expressway. A vacuum gauge isn't perfect but it will get you an idea of how hard the engine is working. You want to balance RPM, gear and engine load to get the best efficiency.

The physical mods should wait until you get some baseline numbers. It isn't good to start going nuts and not really know if what you did made an improvement or maybe made your fuel economy worse.

Project Avalon: E bike build
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