just a little bit of opinion on these engine mention above.
drove one fitted with K3VE before, fitting with Kenari stock size semi slick tire. straight line performance is really good! but when comes to curvy road which i concern a lot, it's not so cool, it's hard to put power down to the ground when cornering even on semi slicks. so not to mention anything about K3VET. unless you guys decided to cut the wheel arch and slam in 195/50R15.
on the 660cc turbo, forget about it unless you want the turbo spooling sound. been in a drag with Kancil 660cc turbo before, i'm with my Kenari auto, the Kancil got slightly faster before 90km/h and after that the Kancil didn't manage to keep up with me anymore.
on the installation/conversion part of K3 (not sure on 660 turbo), you will have to use YRV subframe and engine mounting. lower arm, drive shaft and front antiroll bar got to be Kenari to prevent the tire come out from the fender. and to pair Kenari lower arm and front antiroll with the YRV subframe, you'll need to force installation on antiroll bar together with the lower arm on the the YRV subframe, which from my observation it will put stress on the lower arm bush and antiroll bar end-bush.
additional information:
on the front brake conversation, different between YRV front brake and Myvi front brake:
brake caliper: same
brake carrier: YRV bigger / Myvi smaller
brake disc: diameter 246mm for YRV / diameter 234mm for Myvi (note: initial thickness for both disc are the same, 16mm)
brake pad: same, interchangeable between YRV & Myvi
Wow jaesern, very informative on the conversion. Other item to highlight is that the front end will be heavier if using K3 engines which will cause imbalance weight distribution between the front and rear.
But one thing, 660cc turbo has about 10 HP more than our 1000cc engine. Shouldn't it be better in terms of overall power?