View Single Post
Old 04-10-2019, 11:49 AM   #20 (permalink)
Master EcoModder
Ecky's Avatar
Join Date: Dec 2011
Location: Vermont
Posts: 4,012

Gaptooth (retired) - '00 Honda Insight
Team Honda
Gen-1 Insights
90 day: 54.26 mpg (US)

Such Fit - '07 Honda Fit Sport
90 day: 41.27 mpg (US)

Connect - '15 Ford Transit Connect XL
90 day: 24.03 mpg (US)

K-sight - '00 Honda K-sight
Team Honda
90 day: 46.38 mpg (US)
Thanks: 1,782
Thanked 1,697 Times in 1,086 Posts
Originally Posted by racprops View Post
I am thinking that a second overdrive added to a stock 4 speed auto with a OD gear can work and in fact greatly increase a stock car/vanís MPG, just by lowing the cruse RPMS from around 2400 RPMs to 1700 RPMs.

This seems to be the best of all worlds, stock gearing until the added Over Drive is engaged then the advantage of super highway gearing.

Your thoughts and knowledge is invited.

The devil is in the details. Do you mean turning a 4 speed into a 5 speed, or just swapping the 4th gear for a taller one?
  Reply With Quote