1ZZ throttle - Not Optimized Yet!

[fuji]

Well, just finished the 1ZZ install without a hitch. No cel! The problem I saw when I installed the throttle body was the manifold has a opening which is too small and restricts the airflow. To really take advantage of the new throttle body, I think we need a newly designed intake manifold. Any thoughts??

In addition, what intake system are people using with the new throttle body? Perhaps something designed for the 1.8 liter TS or even a Matrix intake?

[marcus]

yah someone had a prototype but i guess decided to cancel the project..*sigh* too bad.. 15-20 hp increase for under $700 sounds very reasonable.

[AlexNet0]

^yeah, but garm is picking it back up:biggrin:


To the OP, if you feel comfortable, you can port match the intake manifold, it just wont fit the stock TB with its gasket after you do this

[cali yaris]

It's picked up. DynaTek is interested, and I already have a backup fabricator if they fail to come through again. However, the intake manifold project was based on using a stock throttle body. If we limit it to throttle body swaps, it might mean not enough sales to do the manifolds. And I'm not doing a bunch of versions, so let that be known.

[fuji]

As long as the new intake manifold is made out of metal and it is thick enough, it can be bored out. This will avoid the strange 90 degree lip where the throttle body connects to the intake manifold. Even more gains!

As long as there is a will, we will find a way!

[06silveryaris]

i haven't looked at the manifold entrance but can't the plastic one be bored out?

[gwasabi]

I'm pretty sure the plastic one can be bored out. Use a dremel tool or something. I was actually thinking of doing this soon but i messed up my manifold so i'm looking for a stock manifold to buy. hahaha

[Thirty-Nine]

About nine years ago, I had a Ford Focus and bought a larger throttle body for it. I port matched the intake manifold, and it was made out of plastic. I just stuffed a rag down into the manifold and used a Dremel and a vacuum to suck out the bits. Worked very well. I'd try the 1ZZ-FE TB, but would make sure to bore out the manifold. Otherwise, it's just bottle necking the airflow.

[frownonfun]

It's picked up. DynaTek is interested, and I already have a backup fabricator if they fail to come through again. However, the intake manifold project was based on using a stock throttle body. If we limit it to throttle body swaps, it might mean not enough sales to do the manifolds. And I'm not doing a bunch of versions, so let that be known.

so stick with the stock throttle body is what you are saying? if we are interested in this manifold that is?

[cali yaris]

Otherwise, it's just bottle necking the airflow.

People who have done the throttle body mod report more power. Port matching would do even more.

Frown, I'm not saying I won't do it, but it will be dependent on interest, how many people want to go the whole way with intake mani + larger TB.

[DJPaneno]

I would be interested, already planning on swapping the throttle body as my next project. I don't know how much something like an intake manifold costs, but it sounds useful.

[Thirty-Nine]

People who have done the throttle body mod report more power.

Yeah, well the "butt dyno"is a bit subjective until a real dyno run is done. :wink: Throttle response is one thing ...

[yarstar]

I've swapped mine, Garm, but I'll go with whatever you produce and mod it if necessary.

Thanks for picking the ball back up on this. I think it will make significant gains.

[cali yaris]

The butt dyno IS subjective, that is true. But when someone like Jkuchta, whose racing and technical expertise surpasses my own, says it makes a difference, I'll take that as being true.

[whooppee777]

Otherwise, it's just bottle necking the airflow.

has no one heard of the venturi effect?

http://en.wikipedia.org/wiki/Venturi_effect

[Galavoxx]

Hey Garm, when can we expect to see the production pieces done assuming DynaTek does pick up the production for the intake? I'm not sure you mentioned this in the intake thread. I'll take whatever you make!!

[cali yaris]

I'm not sure, but I'm having a phone conversation with DynaTek again tomorrow.

[fuji]

An improved intake WITH the 1zz throttle body is going to make some awesome gains! I CANT WAIT!:burnrubber:

[Galavoxx]

I'm not sure, but I'm having a phone conversation with DynaTek again tomorrow.

Awesome.

[Sabretooth]

Garm, why dont you make the intake manifold bolt up for the 1zz TB, then sell it included with the kit, core pricing and all till the buyer sends back the old one. Or you could offer a simple adapter plate for those who wish to stick with the stock TB.

This way so the peeps that decide to go with the larger TB arent needing to bore out their new Intake manifold, and a simple bolt on plate would allow stock TB users the same use of the product.

If Morgan can use that "boating plastic material" (forgot the name) to make an adaptor plate for the TB from the Xb to Yaris, what says we couldnt do a choker plate for the stock TB?

[cali yaris]

^ All in good time. Good to know there is interest in a 1ZZ version. :thumbsup:

[9vapors]

I want one too.

[jouna]

over in pr they make custom manifolds and its a good gain but they are too expensive

[AlexNet0]

^ can you find one and give us a price?

[t0m4s]

i want one

[06silveryaris]

a close freind of mine makes them for Honda with ITB and for old school turbo carburated engines( yeah we still use those here to go 7 sec down the quartermile). :smile: I will be buying a stock intake manifold and boring it to fit the Matrix/corolla tb.

[fuji]

Would it be better to make an adapter instead? This way incase you want to go back to the original throttle body it will not be an issue. I think Alexnet0 was in the process of developing a throttle body spacer.

[cali yaris]

^ still is, along with Nexus

[yaris-me]

has no one heard of the venturi effect?

http://en.wikipedia.org/wiki/Venturi_effect

Thirty-nine is correct. He is talking vacuum not pressure.

[Kioshi]

Interested if gains are equivalent to pricing as well as using alternate throttle body, but if there is more demand from stock throttle body users, i can jump on that bandwagon as well~

[PHXDEMON]

I'll take one for the stock TB. Had way too many issues with the 1zz TB to put it back on while my car is a DD.