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1997 Civic CX to HX engine/VX trans swap! 63 MPG @ 62 MPH When his 1997 Civic CX engine needed a lot of work, turbovr41991 decided to spend his repair time doing something different: he picked up a rusty Civic HX and swapped over the more efficient lean burn engine instead, and went with the more efficient gearing of the Civic VX. With a few other modifications in place, the car is returning seriously impressive highway fuel economy. By turbovr41991 - 187 replies In forum: EcoModding Central

2005 Prius engine into 1986 MR2: mk1 1nzfxe Prius swap (gas only) Mr220v informs us that used Prius engines are dirt cheap, and therefore fun to experiment with! He swapped one into an MR2, and using the Prius variable cam timing/Atkinson design, he now has variable compression on demand, via a push-button. He's still working out tuning, but fuel economy has gone up a healthy amount, from ~30 to 37 mpg (US). By mr220v - 114 replies In forum: Success Stories

Full-boat-tail trailer with gap-fillers for Toyota T-100 pickup Phil says: "The boat hull is far from ideal but using it will save hundreds of man-hours. Maybe 40 mpg HWY... we'll see. P.S. the trailer is large enough to serve as a rigid tent, for car-camping." By aerohead - 357 replies In forum: Aerodynamics

Heating the transmission with engine coolant A good brainstorming discussion about methods for speeding up the warming of the transmission's gear oil. By Daox - 127 replies In forum: EcoModding Central

Staying cool with out air conditioning Oil pan 4 builds a liquid cooled seat to stay cool without air conditioning. By oil pan 4 - 71 replies In forum: EcoModding Central

Old square sedan kammback Joris documents the construction and testing of a nicely made aluminum-skinned Kammback on his (very squared off) notchback Euro Volvo sedan. The addition is cleverly attached at the drip rails and hinged to preserve access to the factory trunk/boot. By Joris - 74 replies In forum: Aerodynamics

02 G1 Insight with many ecomods- 999.6 mile tank @ 105 MPG The donkey CRX has another epic build, this time with his 1st generation Honda Insight. By The donkey CRX - 133 replies In forum: EcoModding Central

1st Gen Toyota Tundra Aeroshell Build Macskyver chronicles the building of his beautiful wooden aeroshell for his Toyota Tundra. By Macskyver - 195 replies In forum: Aerodynamics

Finally broke 60 mpg (bone stock '95 Honda Civic VX) New member Bugzilla scored a dealer-maintained, bone stock Civic VX and through driving technique alone surpassed 60 mpg (US) on his 4th tank. Next up: vehicle mods! By Bugzilla - 12 replies In forum: Success Stories

Ecoscort - 98 Ford Escort ZX2 ecomodding thread BabyDiesel's build thread for his 98 Escort. Hes currently averaging just over 50 mpg with an automatic transmission. By BabyDiesel - 422 replies In forum: EcoModding Central

David's 2001 Civic EV (80-100 mile range; 65+ MPH; 8 second 0-60) TheSGC swaps the guts from his 1996 lead-acid Honda Civic EV into a 2001 Civic body with lithium batteries and a few other updates. In the end, he'll have a DIY electric car with better performance than a Nissan Leaf. By TheSGC - 343 replies In forum: Fossil Fuel Free

Third Conversion, ultra efficient (1993 Geo Metro EV) EVmetro shares a wonderful thread on restoring and converting his 1993 Geo Metro to an electric vehicle. By EVmetro - 80 replies In forum: Fossil Fuel Free

Slow progress but progress (DIY two seater tadpole trike, 9hp Honda diesel) Old Mechanic is developing an efficient, aerodynamic platform for a tadpole vehicle with the flexibility to run various drivetrains, including (ultimately) his patented hydraulic hybrid drive system. Initial plans are to power it with a single cylinder Honda diesel mated to a Harley 5 speed. By user removed - 393 replies In forum: EcoModding Central

Fast warm up ideas: Double engine block heaters When are two block heaters better than just one? By oil pan 4 - 51 replies In forum: General Efficiency Discussion

World's only Diesel Honda Insight By jpstaub - 51 replies In forum: EcoModding Central

Aero Design Senior Project Community Ideas Aeroguy is looking for some help with his senior design project, which involves wind tunnel-testing multiple rear wings & spoilers on a scale model Civic. By Aeroguy - 71 replies In forum: Aerodynamics

Arduino controlled automatically actuated grill block Here's the idea: Use an arduino to monitor temperature and output commands to a simple electric door lock actuator. This actuator will close and open the grill block door. Originally started back in 2009, this project sputtered out when the first design didn't work well. The 2012 redesign looks much better. By Daox - 167 replies In forum: Aerodynamics

Echo-Troll Modding Thread (2005 Toyota Echo) Follow the progress of an extensive aeromodding project on a 2005 Toyota Echo 1.5L , 5-speed. EPA : 30 City \ 38 HWY \ 33 Combined MPG (US). Modified MPG: 60 to 75 MPG in a 4.3 mile commute \ 60 to 67 mpg on the highway. By echo-francis - 322 replies In forum: EcoModding Central

David's Solectria Force Rebuild David purchased and fixed up a Solectria Force (OEM EV Geo Metro) that needed some body and electrical work done. By TheSGC - 82 replies In forum: Fossil Fuel Free

April 15, 2016: Watkins Glen Green Grand Prix The GGP is THE car show/event for EcoModders. Each year there are tons of interesting vehicles to see (many owned by members here), and/or you can enter the challenging economy run competition which takes place on the historic Watkins Glen race circuit. By mloveland78 - 103 replies In forum: Events & Meet-ups