|
The old engine that was meant to go with this transmission was oversquare (81:77) but my new engine has a much longer stroke with the same bore (81:89). It's not as long as the 1ZZ-FE's but I still notice a very significant drop in gas mileage after 45mph (2500rpm).
Going from 45 (2500rpm) to 55 (3000rpm) results in a cruising gas mileage drop from 48 to 38 - that's almost a perfectly linear drop, 21% less FE at 22% higher speed. From 55 to 65mph I go from 38 to 32, which is an 18% drop at 19% higher speed. My gas mileage remains around 48 from 45mph down to about 20mph.
Swapping out my transmission for one from an Integra LS would allow me to go ~21% faster at the same RPM in 5th, or cruise at the same speed with 17.5% lower RPM. Another way of looking at it, I could do 56mph at the same RPM I run now at 45mph.
|