tooter's manifold adventure...

[4/20 NEVER FORGET]

I'm excited to see how the manifold performs with a 1zz throttle body. Good work on keeping this project going!

Also, is that a Simota intake tube for Yaris or for another car? The tube diameter looks larger than the 1nz throttle body. I am using a k&n intake right now and the throttle tube size is nearly identical to the 1nz throttle body diameter, so I knew in the future when I swap to a 1zz throttle body I was going to have to get an intake with a larger diameter tube.

I remember reading something on here something saying that you couldn't go over a certain intake diameter because it would cause the MAF to throw a cel.

[tooter]

Originally Posted by 4/20 NEVER FORGET

I'm excited to see how the manifold performs with a 1zz throttle body. Good work on keeping this project going!

The redesigned adaptors should be done this week, and I''ll be picking up tooter #3 from the welder. So everything is progressing nicely.

Also, is that a Simota intake tube for Yaris or for another car? The tube diameter looks larger than the 1nz throttle body.

It's for a Yaris. The tubing actually flares out to a larger diameter only where it connects to the silicone coupling at the throttle body...



...but is 2.25 inches at the MAF sensor which is the same as the Weapon R intake I've been using...



The Weapon R flares out to 2.5" in front of the MAF sensor while the Simota remans at 2.25" but then flares out to 3" to fit the air filter.

I am using a k&n intake right now and the throttle tube size is nearly identical to the 1nz throttle body diameter, so I knew in the future when I swap to a 1zz throttle body I was going to have to get an intake with a larger diameter tube.

Yes. The K&N Typhoons are straight 2.25" tubing all the way through to the air filter. You raised an interesting point. To use the same MAF sensor with the 1ZZ throttle body, the MAF tubing section will still need to be 2.25" for it to work properly. But there are lots of intakes that go to larger diameter tubing in front of the MAF section, so all you would need is a silicone coupler to fit. The Simota appears to already address this situation as it flares to 2.5 and uses a reducer coupling to fit onto the 1NZ throttle body. If it was used with a 1ZZ throttle body, it would use a simple straight coupler.

I remember reading something on here something saying that you couldn't go over a certain intake diameter because it would cause the MAF to throw a cel.

I've tried a few different intake configurations, but all of them are with the MAF tubing section at 2.25" and have never gotten a CEL light. So the front side of the 2.25" MAF section can be almost anything else.

[tooter]

Got the intake mounted and it fits fine...





Next comes the test drive. (oooh, goody )

edit: The engine runs great... and no CEL light.