Lets make a Yaris Real Fast.....

[Blown_xa]

Build the motor. It's weak. I have been through 5 or 6 motors, 150whp (DD dyno uncorrected) is the limit for hard driving I know this all too well. Maybe a bit more if you just plan to drag it. I was able to pull a 14.01 in the 1/4 on a stock motor, I don't think anyone has been able to touch that yet. in a stock 1nz-fe.

Build it and turbo it. Custom manifold and large turbo maybe if you want big numbers, nothing bolt-on will put down big numbers unless you run nitrous also. The HKS and Greddy kit have tiny turbos which is alright but max out around 200whp.

If you do it, race it! Rock it! there are only a handful of big number 1nz-fe's in the US that put down crazy power, but I never see them race!! Im lonely!!!

[PETERPOOP]

Originally Posted by Blown_xa

I was able to pull a 14.01 in the 1/4 on a stock motor, I don't think anyone has been able to touch that yet. in a stock 1nz-fe.

Wasn't there a stock yaris w/ NOS in PR in the 14s or 13s?

[xen555]

Originally Posted by PETERPOOP

Wasn't there a stock yaris w/ NOS in PR in the 14s or 13s?

the yaris in the 14s is the yaris with corolla's engine

[chongopants]

Originally Posted by thebarber

an elise weighs 2000lbs and has 160whp stock...how fast is it? *edit is does it in 13.7s

My yaris weighs 2000lbs or less after I have lightened it, and I am at about 115whp, so what does that mean I should be at?

[BlownYaris]

Interesting. Thanks for posting guys.

150-160 whp sounds good. for a stock motor.

The rotrex sc is more then sufficient to handle that even up to 600whp on virtually any motor.

Maybe a turbo might be better but I will need to look into this.

Now tranny...what mods have guys done....to hold this whp....valve bodies? tq convt? full bullet proof trannys?

Tuning- whats the best on these cars?

Thanks guys.

BTW 14.01-14.5 would be great on a 1/4 mile on this motor stock.

Thank you very much.

Jon

[BlownYaris]

I think Im going the rotrex route. Im waiting on final numbers.

We will see.

Is there any trannys that are tiptronic for auto based trannys we can upgrade too or swap?

Thanks

[yaris2010RS]

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

[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

[cdydjded]

Originally Posted by 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

Im sorry but only aftermarket blocks have a block rating. And even then that is a guideline # not an exact science. I woulds be very interested in seeing where you came up with the 1.5 block rating. Also Iv owned a GN and you can make a lot more than 340 HP with that block. Also again there is no solid evidence that if you make 200+ HP it is a "ticking time bomb" And if you have it please share with us. An engine, any engine is as good and as the components used to build the engine, as good as the builder itself & the whole combination & use of the engine.

[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

[cdydjded]

There is a lot of speculation & guestimates going on here. First to the OP, forget about an auto tranny. No one makes or ever will make a convertor or anything to make the auto handle more HP. Second, no one knows exactly what a stock block can handle or what a built block will handle. What we do know is that the highest recorded HP on a stock block I beleive was Garms (please correct me if Im wrong) @ +/-180 & the highest recorded HP on a built block (again correct me if Im wrong) @ 303. As for a turbo kit, you options are custom, Zage or modifying an xA/xB kit from Greddy or HKS. As for tuning Emanage and FIC work. Rotrex is also an option but I think you'll have a hard time getting one. If you are really going to build a "fast Yaris" just duplicate what Garm has done. He has the highest HP 1NZ here period.