1NZFE Ist tune options

sergei · Post by **sergei** » Fri Mar 25, 2011 9:37 am

We have an 1NZFE powered Toyota Ist...

I like everything about it, except its power delivery. It is a bit gutless.

The stock engine (1NZFE) is 1.5L and produces ~80kW. My goal is 100-120kW (anything above that will be undrivable).

My budget (if I ever decided to go ahead) is ~$3000 not including labour (I will do most mechanical work).
Must stay auto (due to wife) and maintain A/C.

My options are:

Keep 1NZFE and:
N/A tune (cams+ecu) - but will that make it even more undrivable?
Supercharger - fuel economy will suffer greatly?
Turbo - requires touching bottom end, unless low boost and hope for the best (CR is ~10.5:1 on those).

Ditch 1NZFE and:
1ZZFE - cheaper and slightly smaller than 2ZZGE.
2ZZGE - ultimate solution - but space might be huge problem. Getting one within the budget could be also a problem..

The purpose of this modification is not a track car and not a drag car, but to be adequate for mountain passes.
Your thoughts on this?

1I1 · Post by **1I1** » Fri Mar 25, 2011 9:42 am

I like the idea of supercharger, going to be more user friendly than cams no doubt?

Bit over the proposed budget, but:
http://www.rhdjapan.com/blitz-compresso ... z-bb-52915

sergei · Post by **sergei** » Fri Mar 25, 2011 9:57 am

Ultimately I would love to have it like this:

YeMs · Post by **YeMs** » Fri Mar 25, 2011 11:42 am

my mother in law has a RUNX with a 2zz-ge and it is a rocket man. get it revving and it goes, even sounds like its got VTAX YO. but you really do feel the vvti come on and pull right up to redline

Nuty|Mike · Post by **Nuty|Mike** » Fri Mar 25, 2011 12:07 pm

sergei wrote:Ultimately I would love to have it like this:

That would be so cool :O any youtube links of that thing ?

Akane · Post by **Akane** » Fri Mar 25, 2011 5:47 pm

I don't really know my econoboxes, but didn't some 1.5 Vitz RS came with a turbo?

OMG so shiny! · Post by **Dell'Orto** » Fri Mar 25, 2011 6:14 pm

Had a chap come in to work a few weeks back with a supercharged Ist, he said it was quite good on gas. Definitely what I want to do with our bB at some stage.
Cams are a mongrel to setup due to the lazy cam, and would maybe lose VVTi?

1I1 · Post by **1I1** » Fri Mar 25, 2011 6:24 pm

VVTi would seriously limit how extreme you could go on duration and lift

Skip to 7.33
http://www.youtube.com/watch?v=g8HGbIbcuFo

levinguy · Post by **levinguy** » Fri Mar 25, 2011 11:51 pm

your proberly really pushing it for a 2zz or turbo with only 3k (retaining a/c etc)

cams and megasquirt seems the option to me, but it won't be as driveable. you need more then 3k. easier to sell it and buy something better (/toyspeed cliche?)

Bling · Post by **Bling** » Sat Mar 26, 2011 7:20 am

SC all the way. That video helped my decision :lol:

As for extra fuel usage, if you don't want that leave it stock. I'm sure NA with cams, SC and turbo will all have similar effects on the fuel economy.

OMG so shiny! · Post by **Dell'Orto** » Sat Mar 26, 2011 9:53 am

That Vitz is awesome! I want a manual

sergei · Post by **sergei** » Sat Mar 26, 2011 10:30 am

levinguy wrote:easier to sell it and buy something better (/toyspeed cliche?)

Actually it is my line :lol:

but wife loves the car, 2ZZGE powered corolla is too big for her.

sergei · Post by **sergei** » Sat Mar 26, 2011 10:35 am

http://www.trdparts.jp/parts_trdturbo-plan.html

That is a good option, wander on the availability and price...

Bling · Post by **Bling** » Sat Mar 26, 2011 11:11 am

You know who to ask about Toyota parts :wink:

sergei · Post by **sergei** » Sat Mar 26, 2011 11:25 am

BZG|Bling wrote:You know who to ask about Toyota parts

I am affraid what the price would be :lol:

Bling · Post by **Bling** » Sat Mar 26, 2011 11:33 am

Lol yeah fair enough, maybe just lube up first :lol:

sergei · Post by **sergei** » Sat Mar 26, 2011 11:41 am

Ok, here is the question:
Does anyone know what is the length and width of 1ZZFE + Gearbox,what about 2ZZGE?

I am not really keen on modifying the 1NZFE due to requiring aftermarket ECU which will delete
1) knock sensor/closed loop ignition and
2) oxygen sensor/closed loop mixture,
unless I spend mega $$$.

If I transplant the more powerful engine I will retain those features along with reliability.

I just found another option of engine transplant:

2ZRFE that originally comes in latest yaris/ist, 1.8L, and produces 132Hp (similar to 1ZZFE).

sergei · Post by **sergei** » Sat Mar 26, 2011 12:02 pm

2ZZGE engine only: 652 x 608 x 659 (LxWxH) (mm)
1ZZFE engine only: 639 x 586 x 632 (LxWxH) (mm)
1NZFE engine only: 550 x 550 x 650 (LxWxH) (mm) (my measurements +/- a few cm)

looks like a really tight squeeze, although 1NZFE has heaps of space around it (from furthest point of the engine ~100mm to radiator, ~100 mm to the firewall, ~80 mm to the chassis rail).

Here is some forum post I found regarding 2ZZGE into yaris:

http://www.microimageonline.com/forums/ ... #post16173

Nuty|Mike · Post by **Nuty|Mike** » Sat Mar 26, 2011 5:03 pm

however awesome a 2zz would be I just noticed it needs to stay auto.....
1zz would probley be better with an auto and you could even retrofit the up/down steering wheel shift buttons off the runx Z auto for a bit more control.

1zz would be cheaper to start and can always have a 2zz dropped it later quite easily on the search for more horses

cozmoid · Post by **cozmoid** » Sat Mar 26, 2011 8:10 pm

Akane wrote:I don't really know my econoboxes, but didn't some 1.5 Vitz RS came with a turbo?

This is correct and they have a sweet kit and rims. Would probably only cost you 3k plus yours traded in!

Thread ended! You should find one on a yard and test drive it. I tried one at my mates car yard and I was pretty impressed for a Fwd!