Pff on turbo

[PETERPOOP]

If he wants to stick to N/A, then those are his best bets. What can I say? GL yoda!

[Liltoaster]

Start with the basics: Exhaust, Intake, Pully's if you want to mod it.

[PETERPOOP]

I believe he has all of that already.

[Yoda]

here is my dyno post the second is whp/mph forgot to switch it to rpm

http://www.yarisworld.com/forums/sho...2&postcount=61

and to Tamago

I here ya buddy and believe me I understand the the more power idea, with N/A bolt ons for a 1.5l engine sounds retarded. But i like to be different or retarded. If i wanted to gain mad stupid amount of power with N/A i would have bought a mustang or something of the sort. I am never gonna race the car nor do i street race. Just for me and how i like to drive.
Respect your opinion tho

[Tamago]

modding for the sake of modding is just fine :) as long as you admit it of course :D

[RacerFreakXXX]

if you are going n/a you might as well bore the engine to 1.6, raise the compression to 11.0:1, port and polish the head, ect... if you go n/a you have to go all the way otherwise it's just not worth it to half ass it. Also you will spend more like 6-8k on building and tuning a fully built engine to see any gains close to a simple turbo or supercharger.

[Tamago]

so basically, throw away money on a car that'll still get beat by a stock S2000...

[Altitude]

Originally Posted by PK198105

i knew you can do it Tamago
that has to be the most MAKE SENSE POST i've read in a while.

+10!!

[RacerFreakXXX]

Originally Posted by Tamago

so basically, throw away money on a car that'll still get beat by a stock S2000...

or just buy a s2k... honestly if you want n/a power you buy a big 6cyl or an 8cyl or buy a Honda 4cyl and have no torque.

[Tamago]

Originally Posted by RacerFreakXXX

or just buy a s2k...

best advice in the thread yet.

[puetato89]

thats like saying well just buy a n/a supra, or buy a g35, maybe what should be told is what he would need 2 do 2 make it faster, there is a reason why he didnt buy a s2k im sure

thats a lil off topic imo

[RacerFreakXXX]

it all depends on what you want out of n/a... the op seems to just want 10whp more and that is reasonable for n/a. If you wanted 40whp+ you are barking up a long hall with n/a unless you have one of those cars you mentioned. You would be better off with a s2k with intake, exhaust, k-pro, and basic coilovers than even a s/c or t/c yaris imo.

[JohnnoEH]

Originally Posted by RacerFreakXXX

or just buy a s2k... honestly if you want n/a power you buy a big 6cyl or an 8cyl or buy a Honda 4cyl and have no torque.

Or fit a bigger motor to the Yaris! But then you're getting into big dollars and custom fabrication/engineering stuff. An '08 Hayabusa or ZX-14 motor could be fun (even though they wouldn't be so good for daily driving)...

Maybe he doesn't want a S2000, I know I'd rather do up a Yaris than that. Not only is the Yaris much more comfy and practical, people don't expect a Yaris to be fast, and tend to get really upset when you beat them. Tell me that's not more fun...

In all seriousness, though, I'm agreeing with Tamago on this one.

[Yoda]

wow wow wow wats all this lol. I just want ideas for N/A for yaris and asked if there was a midpipe as yet. Again not looking for any insane power boost as if ya read the first post i said the blitz kit is too much for me so there is no way i would sink 8k+ into this. I didnt get a s2k cause i couldn't afford it. I like modding my car.. well cause i like it.

I am not racing it so there is no need to go crazy with the mods. I am full aware that it will be very expensive to go all out N/A and the power yielded would not be worth it. I am not going all out N/A . just looking for 10+whp would be nice and i would stop there. Would love to achieve this without getting into the engine. Its funny cause i feel more comfortable with upgrading cams than installing a turbo.

lol i must say it again just incase some1 metions it. Not gonna race, not trying to be faster than an other car, not gonna street race these cars.

o btw The Si responds better to bolt ons that the s2k does and is cheaper

[Tamago]

and the money spent "upgrading" cams ? $1000.. gains? i'd wager less than 20hp..

again, not very cheap.

[puetato89]

im staying out of this one 2...

[rob323]

Originally Posted by Tamago

it's a 1.5L econo engine that's over-square, has an offset crank,

You say that like it's a bad thing?

[scape]

well the real questions are how much do you want to spend in total (less than 2k$ i gather) and how much power do you want to have (about 120hp i gather)...
this guy has bought some new internals: http://yarisworld.com/forums/showthr...pistons&page=3
mostly I'd be interested in is those rods, they look substantial (though I think they lower the compression), I'd also be interested to see if anyone adapted the prius pistons (http://www.yarisworld.com/forums/sho...rius+internals) to a yaris, they possibly handle a greater compression ratio I believe or if anyone found some new head gaskets.
if you did increase compression, a new camshaft would most likely be required, or atleast adjust your current one to properly reflect this.
with all of this, you'd REALLY want to plan this out and make sure the components are highquality, stronger than original, lighter than original, and made to greater tolerances than original; then find a way to tune the whole thing (probably the most intensive and important portion of this whole thing)...to save money you'd want to probably do the install or find a friend to install the components.
as well, this would only really work on 2 main aspects of the engine (how much more energy it can extract from gas using a higher combustion point, and possibly how much faster your engine can cycle-- something I would not venture on personally as much more work needs to be done).

other than that, find a way to drop weight significantly while still catering to your lifestyle: http://www.yarisworld.com/forums/sho...ght+reductions
a drop in 100lbs (dead,non-rotating) weight would be about a +4hp equivalence...