RomanDave's Prius C swap

[Neinris]

Wished this car was available in the US. I love how my 08 two door hatch looks, but this weighs 63lbs lighter. I wouldn't have to go on a diet when I decide to make mine a track car.

[CrankyOldMan]

Originally Posted by Neinris

Wished this car was available in the US. I love how my 08 two door hatch looks, but this weighs 63lbs lighter. I wouldn't have to go on a diet when I decide to make mine a track car.

You can import them from Canada into some states, MI is really easy. Or you can import RHD versions from Japan in a few years once they get out of the 25-year blackout period (they don't have FMVSS or EPA certification for North America).

[Neinris]

Originally Posted by CrankyOldMan

You can import them from Canada into some states, MI is really easy. Or you can import RHD versions from Japan in a few years once they get out of the 25-year blackout period (they don't have FMVSS or EPA certification for North America).

Sorry in advance for hijacking the topic... I've always loved the Vitz, even when I used to play Grand Tourismo on the PlayStation, I didn't care that my friends would laugh at me.

Yeah but it'd be in KPH... LOL! Not really a deal break. RHD is a no go for me, it'd be hard to drive on the CORRECT side of the road.

Not sure how much I'd have to pay through customs if I get one from Canada, any idea?

But back to the build... Kudos to the OP, your work inspires lots of us. Please post new dyno test after everything is completed.

[CrankyOldMan]

Originally Posted by Neinris

Not sure how much I'd have to pay through customs if I get one from Canada, any idea?

For Michigan, you just transfer the title at the Secretary of State and pay whatever applicable taxes/fees for the value of the vehicle. Not sure about customs though since I bought it from TheBarber (who is a Canadian National that lives in MI on a visa). Check with your state's rules for importing vehicles for more details, I guess. :)

[Neinris]

Originally Posted by CrankyOldMan

For Michigan, you just transfer the title at the Secretary of State and pay whatever applicable taxes/fees for the value of the vehicle. Not sure about customs though since I bought it from TheBarber (who is a Canadian National that lives in MI on a visa). Check with your state's rules for importing vehicles for more details, I guess. :)

I really want to get back to the build, sorry for hijacking again. But thank you for that information. I'm still on the fence about it. I'll be moving back to Maryland sometime next month. Maybe I'll start inquiring when I get back.

I might just stick with my 08 Yaris, and start my own project. Thanks to the OP, some others here, and others on YT who have inspired me with their Frankenstein engines that I want to start my own Frankenstein project. I've vaguely mentioned in own "Frankenstein" post (https://www.yarisworld.com/forums/sh...ad.php?t=63299) about maybe putting a 3ZR bottom end for stroked crank, 2ZR-FXE 13:1 compression pistons, and 2ZR-FE head (no valvematic) together, the kicker is 2ZZ intake runners! Now that's a Frankenstein.

I'd take years for me to put that together. So anyone is more than welcome to experiment and steal this idea.

I'll end my question so we can focus on the OP's build.

[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.

[CrankyOldMan]

Originally Posted by Neinris

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.

The Echo uses the C15X gearbox family, not the C5X. That really limits the availability of options without going back to much older cars (80's/90's) to find compatible gears. That rules out the xA/xB/xD and all of the 1ZZ-based platforms.

That said, the shorter final drive is great for AutoX but awful for road courses. Way too much top end speed given up, even with the 0.725:1 super-overdrive from the C59.

[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.