In the middle of April, when there were many questions about the performance and power of the Forester XT, I made an educated guess about its torque curve. Here is what I wrote then, with Nm quantities included now for convenience:
RPM lb-ft Nm
1600 ~160 217 [from base 2.5l engine +AVCS +turbo]
2000 ~190 258 [from base 2.5l engine +AVCS +turbo]
3600 ~235 319 [official spec]
4600 ~220 298 [interpolated]
5600 ~200 271 [official spec, converted from max hp (197, exactly)]
6000 ~180 244 [interpolated from 2.5l + turbo specs, and max hp cond.]
6400 ~160 217 [interpolated from 2.5l + turbo specs, and max hp cond.]
Now, Subaru of Australia has published the actual torque curve of the XT
formatting link
). You can see that my estimate was within a felt-tip pen stroke (a very few percent) of this curve. Interestingly, I left out the area between 2000rpm and 3600rpm because I could not figure that one out. It turns out that there is a slight saddle in the torque curve there ? but nothing to be concerned about. Other than patting myself on the shoulder here, I want to point out that it is quite possible to get a good idea of an engine?s performance from a few data points and specs that are available.The above .pdf file is also describes other engine features quite nicely.
- D.