View Single Post
Old 10-26-2010, 11:26 PM   #17 (permalink)
downhill both ways
Toby's Avatar
Join Date: Feb 2010
Location: Missouri, United States
Posts: 45

Terceleporter - '96 Toyota Tercel STD
90 day: 52.6 mpg (US)
Thanks: 2
Thanked 1 Time in 1 Post
Originally Posted by Daox View Post
The C151 will drop your rpm ~300 @ 55 mph (2300 to 2000). This is a step in the right direction, however I don't think you'll see a big gain from such a small decrease in rpm. I think you'd need to see a reduction of 500+ rpm to really see a good bump in mileage.
I agree that the options are very limited, and the c151 offers a minor improvement. Can you comment on the feasibility of the c141 diff in the c151 trans? I have been researching this combination but I can't find a final word on these internets. My understanding right now is that the c141 diff offers a better ratio and will probably fit. Do you know?

Originally Posted by Daox View Post
I currently use P&G to overcome the bad gear ratios.
Likewise. But on long highway climbs, anything to increase engine load and lower rpm would be great.
  Reply With Quote