Lets make a Yaris Real Fast.....

[advocate]

whatever you do, I get the feeling I'm going to enjoy reading this thread a lot as you progress on the lonesome journey of econo-box boosting.

[cali yaris]

no matter what you do, the block itself can only hold up to about 168HP before shits gonna go down

This number is based on what?

[Nexus1155]

That seems like a veryy accurate number lolololol, might want to take into account that some dynos are conservative too.

If you were going to do it without "building" the engine, atleast try to get a thicker headgasket in there if you wanted to push that little bit more power so you don't have to tear apart the whole block for anything to matter...

[cali yaris]

the lonesome journey of econo-box boosting

awesome line

[lilredrocket]

Why use an auto tranny? I don't think and other Toyota auto tranny has upgrades but not 100% sure on that. Also not to may other trannys will bolt up. Toyota's are not like alot of other car manufactures they don't build what I like to call "Lego" cars Not a whole lot of things cross over between motors or trannys....

Good luck with the project... If you use the Rotex Kit from Power Enterprise it puts down about 145 WHP on a stock motor (I installed the kit on another members car and saw him dyno it on an AWD Mustang Dyno). The kit looks to be very easily upgraded with a small I/C and longer alt. pully (this kit runs off the alt pulley and steps down from stock size to a much smaller size where the s/c belt sits) and should put you in to the range you are looking for.

[PETERPOOP]

He didn't make 145whp on the AWD Mustang Dyno. ;)

[yaris2010RS]

that number is based on the block structure itself. not exactly sure if it includes components inside but all engines have a block rating. the yaris (1.5L) has a block rating of 168, the buick regal has a block rating of i belive 340ish, i was under the influence that the block rating, no matter how you rebuild it and what you put in, the structure itself will only safely hold 168HP, that dont mean you can't get it to put out 200+HP but its a ticking time bomb and money pit

[cali yaris]

It's not the block that will fail, it's a rod or possibly a valve.
Show me a 1NZ-FE block that failed with nothing else failing first.

[Nexus1155]

These engines are pretty much a dime a dozen, IE: $50 on car-part as you can get them from old echos.... SCORE

[yaris2010RS]

the rating on the block i got from toyota, maybe its just their recomandation but i dont understand y they would low ball it. i have no idea, i dont race any cars on a track or professionally. i've seen engines fail and i have also seen blocks fail. it usually has more to do with lack of care and maintanance then too much HP. as i said in my post also, i am under the influence the rating is on the block itslef not internal parts. if you decided to put turbo, nitro, and what ever other riced out shit you could think of without rebuilding the entire motor your gonna be into problems. and i dont know about your GN but the regal has a 3.8 v6 auto tranny is rated with stock motor and tranny not to go in "over excess"(over excess is the exact wording that i was told) of the block rating of 340ish (i dont exactly remember if it was low or high 340's)

so after saying that, let me rephrase my statement, the engine rating of the yaris stock 1.5L is 168HP, over that without a complete engine project will definatly give you a new engine project.

[why?]

Originally Posted by yaris2010RS

but i dont understand y they would low ball it.

Really?

[RacerFreakXXX]

IDK why anyone is worrying about the block or anything like that. If he isn't gonna build the engine and wants to push the limit I'd assume he'd want to do under 180whp. The question is how much is just right. I'm assuming about 160-170 would be the max and is plenty fast enough.

[cali yaris]

if you decided to put turbo, nitro, and what ever other riced out shit you could think of

A turbo is "riced out shit"? -- you just lost 100% of my respect right there, sir.

[RacerFreakXXX]

OUCH! you know you crossed the line when you piss Garm off.

[Nexus1155]

Damn then apparently my Audi has twice the amount of rice :-/

[PETERPOOP]

Originally Posted by yaris2010RS

if you decided to put turbo, nitro, and what ever other riced out shit....

What an idiotic statement. The things you listed are actually the complete opposite of "RICE."

Race Inspired Cosmetic Enhancements.......

So turbo diesel trucks are riced out?

[Saskatchewan17]

So it looks like you can't really push the stock block much past 150 WHP without problems with the internals.
12 second Yaris? Not gonna happen unless you have a built engine/turbo, stripped interior, and drag slicks. Even then... I don't know. Launching a FWD car is tricky stuff. I know you can't break into the 12s in an MS3 unless you are fully bolted on and a fantastic driver... or have slicks.
Also, when do you have to up the injector size on the Yaris, and when do you run into fuel pump problems? How much possible WHP can you make on an NA motor?

[yaris2010RS]

i'm sorry, but a yaris with a turbo for everyday driving is riced out. my definition of riced out is un needed upgrades not gonna lie, i didn't know there was an actual deffinition. some cars come with a turbo, they are designed to work with a turbo but we are not talking about trucks or other cars, this is about a yaris. for me, work and back, school and back, a turbo on a yaris is a waste, if your gonna race, okay, put a turbo in. it all depends what you plan on doing. yes this is fourm is talking about making a yaris 12 seconds but without total engine mod it can not handle anymore then (i'll even stretch the limit) 200HP, it will blow up. since everyone has a smart ass remark, how else would you get a stock 1.5 L to over 168 HP without rebuilding it and modding it? and as i said before i have no idea what the block 168HP rating is, maybe its the ideal running HP everyone should get their car to, i simply stated there is a rating of 168 HP on the block, take it, do what you want with it. and without lots and lots of engine mods, you will never get a 1.5L over 200HP. driving a yaris with 200HP we are gonna have to send a search party for you on the moon. as i say over and over, revise it a little more at a time, the engine conponents are rated to 168HP, yes you could get away with 170, maybe even 180, after that, toyota has nothing to do with the failure of the engine. if you want to keep it from failure, rebuild the entire thing. yes you can put w.e mods you want and drive like they are not there but whats the point? really it all comes down to you, its your car, your money, the fourms are about sharing knowledge and trying to help out.