1zz Throttle body review/tips - Page 6 - Toyota Yaris Forums

Rigaud · 06-23-2015, 08:56 PM

790rpm and up you'll get a code for high idle. I got mine at about 600rpm on idle, been over a year and zero issues. I'll finally have time to mod a 1zz aluminum intake and have everything match properly. Just the 1ZZ TB alone you still don't get the full benefit.

invader166 · 06-24-2015, 04:09 AM

Quote:

Originally Posted by Rigaud

I'll finally have time to mod a 1zz aluminum intake and have everything match properly. Just the 1ZZ TB alone you still don't get the full benefit.

Are you moding a 1zz aluminum intake manifold from an '98-'02 corolla? Is it a big project. Please let us know how it turns out!
I wonder if I could do the same for a plastic intake manifold from an '03+ corolla...

Rigaud · 06-24-2015, 07:19 PM

Quote:

Originally Posted by invader166

Are you moding a 1zz aluminum intake manifold from an '98-'02 corolla? Is it a big project. Please let us know how it turns out!
I wonder if I could do the same for a plastic intake manifold from an '03+ corolla...

Bolt holes to the head don't match but the ports do 100%. I'm cutting off the existing mounting plate, machining a new one to fit, tig weld the port it. The other end is a 3 stud mount for the TB, cutting that off too, machine, weld, port and voila. I don't know the exact year but looks like a celica intake.

invader166 · 06-25-2015, 10:30 PM

^^^ +1 for custom manifold!

bebeelo · 06-29-2015, 10:35 PM

so all I have to do is install the new throttle body, then either loosen up or tighten the idle screw?

MedMantle · 06-30-2015, 12:09 PM

Quote:

Originally Posted by bebeelo

so all I have to do is install the new throttle body, then either loosen up or tighten the idle screw?

Yes. Install it, make sure the gasket is sealing properly and just loosen the idle screw to reduce the idle RPM's and tighten to increase. Make sure to chip away the resin on that screw before installation :)

bebeelo · 06-30-2015, 02:33 PM

Quote:

Originally Posted by MedMantle

Make sure to chip away the resin on that screw before installation :)

do I use A toothpick or a screwdriver to take it out?

MedMantle · 07-01-2015, 04:28 PM

Quote:

Originally Posted by bebeelo

do I use A toothpick or a screwdriver to take it out?

It's quite hard. I used a small flat-headed screwdriver and a hammer to tap at the resin "carefully" and to dig in it. Make sure to get it all off so the screw doesn't strip when you try to adjust it.

Maybe someone else knows a safer or easier way?? :P

And remember it is a Allen Key screw. It was quite difficult to source the correct one here where I live but everything is difficult to find over here :P

bebeelo · 07-01-2015, 09:16 PM

Thanks for the specific info medmantle👌 btw im using a CAI so do i need a specific intake hose adapter thingy like this one or could i uss the one that originally came with CAI?

scod4025 · 07-01-2015, 09:59 PM

I was able to use the one that came with my CAI just took a little bit of finesse. Just rounded the inside edge a bit then little bit of oil and it slide on

Sent from my SM-G386T using Tapatalk

MedMantle · 07-02-2015, 01:44 PM

I still have the stock intake. Like 'scod' said, just give it all you've got! :P I had to turn my stock intake pipe around to get it to fit and it was still quite tight and difficult to get over, but I eventually got it. I would have loved to be able to use a adapter like that but we have almost no aftermarket car stuff where I live. :)

Rigaud · 07-02-2015, 11:27 PM

Quote:

Originally Posted by MedMantle

I still have the stock intake. Like 'scod' said, just give it all you've got! :P I had to turn my stock intake pipe around to get it to fit and it was still quite tight and difficult to get over, but I eventually got it. I would have loved to be able to use a adapter like that but we have almost no aftermarket car stuff where I live. :)

You don't get the full benefit of the 1ZZ TB with a stock air intake pipe/filter and stock intake manifold. Everything is 46mm while the 1ZZ is about 55mm. I did the same as you at first but ended up installing a proper tube and filter. Next is the intake manifold and port polish the head. Only way to benefit 100%

MedMantle · 07-03-2015, 02:50 PM

Quote:

Originally Posted by Rigaud

You don't get the full benefit of the 1ZZ TB with a stock air intake pipe/filter and stock intake manifold. Everything is 46mm while the 1ZZ is about 55mm. I did the same as you at first but ended up installing a proper tube and filter. Next is the intake manifold and port polish the head. Only way to benefit 100%

Rigaud, what air intake did you use for your setup? Do you maybe have a picture? I'd imagine the ribbed stock intake pipe causes some disturbance with flow. I wanted to get an aftermarket intake (specifically the Injen CAI) mainly for eye candy.

In the future I'm gonna look at doing an engine swap to the 1.5 (yes, I am driving the 2NZ-FE

) and once I have the engine I'm gonna do a bit of work on it like porting and stuff regardless of the gains, mainly for fun though 'cause I'm still learning. I'm happy to hear there are still potencial gains to come :D

This forum was my first introduction to how cars work so my Yaris is kinda my guinea-pig :P

phaznet · 07-03-2015, 07:11 PM

Quote:

Originally Posted by Rigaud

You don't get the full benefit of the 1ZZ TB with a stock air intake pipe/filter and stock intake manifold. Everything is 46mm while the 1ZZ is about 55mm. I did the same as you at first but ended up installing a proper tube and filter. Next is the intake manifold and port polish the head. Only way to benefit 100%

What options do we have for changing our intake manifold?

CrankyOldMan · 07-03-2015, 08:02 PM

Quote:

Originally Posted by phaznet

What options do we have for changing our intake manifold?

Bolt-on options are pretty few and far between: golden eagle, MicroImage, and possibly Weapon-R. The Corolla manifold requires a custom TB adapter and machining a flange for the engine block. Tooter made a short run of them a few years back, and is no longer making them. If you want to go that route, I've posted a PDF of the flange dimensions in another thread.

invader166 · 07-04-2015, 04:34 PM

Quote:

Originally Posted by CrankyOldMan

Tooter made a short run of them a few years back, and is no longer making them. If you want to go that route, I've posted a PDF of the flange dimensions in another thread.

I'd actually be interested in going that route. It would be a cool project to take on. Which thread did you post the flange dimentions in?

scod4025 · 07-03-2015, 07:34 PM

I'm running a long runner golden eagle intake manifold that I got from micro image (may see if he can still get one for you) but have seen short runners from Golden Eagle and if you're looking at the TB i think some people run the corolla intake manifold but you have to modify it but from what I've seen looks like it would work better as its a smoother transition

Sent from my SM-G386T using Tapatalk

bebeelo · 07-03-2015, 11:37 PM

Is it useless to have a 1zz tb on stock intake manifold then?

06-23-2015, 08:56 PM	#1
Rigaud Drives: 2009 Yaris Join Date: Jan 2014 Location: Rigaud, Quebec, Can. Posts: 357	790rpm and up you'll get a code for high idle. I got mine at about 600rpm on idle, been over a year and zero issues. I'll finally have time to mod a 1zz aluminum intake and have everything match properly. Just the 1ZZ TB alone you still don't get the full benefit. __________________ 2009 Toyota Yaris (Little toy) 2002 Audi A4 Avant Quattro 3.0L (Big boy toy) 1998 Subaru Legacy GT 2.5 (winter & DD)

06-25-2015, 10:30 PM	#4
invader166 Pumpman Drives: 2019 Kia Soul EV Base Join Date: Dec 2014 Location: Langley, BC Posts: 434	^^^ +1 for custom manifold! __________________ "I would rather loose by a mile in a car I built myself, then win by an inch in a car that was built for me." - Moog

06-29-2015, 10:35 PM	#5
bebeelo ThatYarisGuy View User's Garage Drives: Toyota Yaris 2012 SE Join Date: Oct 2012 Location: Stockton, CA Posts: 126	so all I have to do is install the new throttle body, then either loosen up or tighten the idle screw? __________________

07-03-2015, 11:37 PM	#18
bebeelo ThatYarisGuy View User's Garage Drives: Toyota Yaris 2012 SE Join Date: Oct 2012 Location: Stockton, CA Posts: 126	Is it useless to have a 1zz tb on stock intake manifold then? __________________

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
TPS reading at WOT with 1ZZ throttle body?	4/20 NEVER FORGET	Performance Modifications	14	07-02-2023 05:20 AM
Installed the 1zz throttle body -	AlexNet0	DIY / Maintenance / Service	135	08-01-2014 08:57 AM
FS: 1ZZ throttle body and Fujita intake	mrbond	Items for Sale by private party	25	09-08-2009 11:21 PM
Intake to match the 1ZZ throttle body	fuji	DIY / Maintenance / Service	2	06-17-2009 11:02 PM
For Sale: 1ZZ Throttle Body and 0.25" aluminum wheel spacers	m911gt	Items for Sale by private party	6	04-25-2009 09:52 PM

07-01-2015, 09:59 PM	#10
scod4025 Drives: 12 LE 5d HB 1nz-fe Automatic Join Date: Oct 2014 Location: Sacramento Posts: 101	I was able to use the one that came with my CAI just took a little bit of finesse. Just rounded the inside edge a bit then little bit of oil and it slide on Sent from my SM-G386T using Tapatalk

07-02-2015, 01:44 PM	#11
MedMantle Drives: Yaris '05 1.3 Hatch "R.I.P." Join Date: Aug 2014 Location: South Africa Posts: 127	I still have the stock intake. Like 'scod' said, just give it all you've got! :P I had to turn my stock intake pipe around to get it to fit and it was still quite tight and difficult to get over, but I eventually got it. I would have loved to be able to use a adapter like that but we have almost no aftermarket car stuff where I live. :)

07-03-2015, 07:34 PM	#17
scod4025 Drives: 12 LE 5d HB 1nz-fe Automatic Join Date: Oct 2014 Location: Sacramento Posts: 101	I'm running a long runner golden eagle intake manifold that I got from micro image (may see if he can still get one for you) but have seen short runners from Golden Eagle and if you're looking at the TB i think some people run the corolla intake manifold but you have to modify it but from what I've seen looks like it would work better as its a smoother transition Sent from my SM-G386T using Tapatalk