RomanDave's Prius C swap

[RomanDave]

Originally Posted by Neinris

What is the REV limit for this engine? Is it purely going to be a track car, or is it still going to be a daily driver? Any plans on changing the gear ratio of the transmission? Very few here in YW have changed to the Scion xB1's (bB in most part of the world) transmission, for a higher final drive which would put more torque to the ground, but loses on top end speed. I personally would go with the Scion xD's manual transmission and just change out the 5th gear for better fuel economy, the FD is between the Yaris and the xB1.

Are you asking about my motor?

If so:

-No rev limiter currently. Until I've got some stronger rods I'll likely set the rev limiter somewhere around 8200-8300rpm.

And yes in this case, swapping to the C56 gearbox is an absolutely magical upgrade. Having the 4.3 final drive instead of the 3.5 makes the whole thing so much better. I'd not be suprised if my 1300cc motor would have been into the 15 second quarter mile range with the C56 box.

The individual ratios of the C56 are most excellent. On the shift from 2nd to 3rd, shifting at ~8800rpm it drops down to only around 6500rpm on gear change.
So it stays in the powerband awesomely.

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As for the purpose of this car, it's not a daily driver anymore as I've got a work car. But it still returns fairly decent milage, the high compression actually makes it decently economical.

I've been getting somewhere around 5.5-6 litres per 100km. So thats somewhere around 40mpg.
I could still get it a little better with optimizing the ignition timing further, will get there eventually.