200 NA horses?

[Blown_xa]

Originally Posted by Viperoni

A more accurate way of saying it ;) and yes, we're agreeing to the same point.

Yes lol. There is a point to where it hurts, I have been to that point with an over sized turbo. I think the best power bands are the ones which hold a flat torque curve all the way to Redline, such as the f20 s2k motor and the 370z.

[Blown_xa]

Originally Posted by 1.5Help

Like I previously stated before you will need to stoke the motor as well to accomplish this 200-225hp goal. If you think otherwise you are mistaken.

If you need an example, just look at one of many Bisimotos N/A builds. If you need further guidance, talk to Brian Crower. Anyone that has ever done N/A racing will tell you the motor will need to be stroked. You are going for max output and on a motor of this size you will need to squeeze everything out of it.

This isn't going to be cheap and from what it looks like it appears to be a pipe dream.

Good luck to whoever pulls it off.

You seem pretty opinionated, Your ideas are right on but the construction of the 1nzfe is far from a typical modern Honda motor.

You have to realize that our 1nz fe has the same stroke as a k20 already using main caps which are not part of a girdle plus the caps are half the size. Our motors are already "stroker" motors, the bore to stroke ratio is already silly. I build motors, and have done stroker motors.... A stroker kit is really only beneficial for
a motor which is already efficient, the 1nzfe is not. If you put longer rods, that extra load on the crank ( from inreased rod movement, more leverage per say) will for sure crack the main caps if you try to rev it past 6300rpm... I for see this happening. 1nzfe is no F1 motor.


The motor is nothing but a pump to move air, stroking is one way to move more air but is not a good idea on our motor. The other way to move more air.... Spin that pump faster! Plain and simple. You want to make the 1nzfe more to the specs of a f1 or Hayabusa motor, produce air volume through efficiency with higher compression
and high lift cams... Then rev it out.

[Black_griffin6]

Wow, I got a big response from this, thanks everyone.

To answer a few of your questions, yes it would be expensive, but then again I see people dumping 10k or more into 15 year old Honda Civic's.
Why 200 HP? Well I think with 200 HP and with the weight of the Yaris it would give me a good power-to-weight ratio that I could take on the track, yet it wouldn't be total overkill, I mean don't get me wrong...if I end up with more then 200 after i'm done i'd be happy with it, but 200 is my goal.

I thought about going the 2zz route but I thought it would be too complicated, since I might have to cut the frame and modify the structure of the car to accommodate a different engine and transmission. I'm also worried about how much more weight the 2ZZ with a 6 speed would add to the Yaris.
I mean quite frankly...I would love a 2zz in my Yaris, and if that's the easier option I might end up going with that because i'd love to have a yaris with a 2zz.


I like engines with a long power curve that rev high, like the RX8 and AP1 S2k, and I wondered if I could do the same to my engine without making it completely unreliable. Bear in mind, this is all just a thought i'm pondering what might be the best route for something like this.


I have thought about a supercharged build, but then I wonder what kind of supercharger to go for.
Thanks for all your insight guys, I really appreciate it.

[Viperoni]

Originally Posted by Blown_xa

Yes lol. There is a point to where it hurts, I have been to that point with an over sized turbo. I think the best power bands are the ones which hold a flat torque curve all the way to Redline, such as the f20 s2k motor and the 370z.

Or curving upwards with a properly sized centrifugal supercharger