1zz Tb on a blitz supercharger ... Any good ?

[tooter]

Originally Posted by vten

If possible, cranky or tooter , are you guys mind to make the adapter from the blitz to the 1zz tb ?

I could but sorry, I've already got my hands full making tooters. This is just one of the hobbies I do for fun in my spare time when I'm not doing my regular work.

Why not simply go to a non-CNC machinist? It's just a simple square piece of aluminium with 5 holes drilled in it. You could make your own tapered bore with a half round hand file and some sandpaper, and buy some longer metric bolts to hold everything together. I port match my flanges with a 30 year old Dremel and sandpaper...



There's another slightly more involved alternative. Cut off the existing flange with a hacksaw and have a welder weld a plate onto the casting. It's just soft aluminium. I had considered doing this on the tooters but it added an extra production step and more cost.

[47_MasoN_47]

Since the intake on the blitz is smaller than the diameter of the 1zz TB anyway, will there be enough of a benefit to justify the labor required to make these adaptors?

[tooter]

Originally Posted by 47_MasoN_47

Since the intake on the blitz is smaller than the diameter of the 1zz TB anyway, will there be enough of a benefit to justify the labor required to make these adaptors?

There's only one way to find out for sure.

In my opinion it would work because the intake is not passive.

The supercharger is actively pumping air creating pressure in the head rather than the normally aspirated vacuum. So it's actively pulling in air through the intake casting and the throttle body. The butterfly in the throttle body is what controls the engine speed through metering the intake air. So a larger butterfly can meter more air. Even though the intake is smaller, the air will move at a higher velocity and at a higher manifold vacuum.

[47_MasoN_47]

I'll definitely be interested to see what comes of this.

[tooter]

Originally Posted by 47_MasoN_47

I'll definitely be interested to see what comes of this.

Don't hold your breath, mason.

[CrankyOldMan]

I'll be back on the engineering campus this summer, so it would be fairly easy for me to fab up an adapter plate. I'm also going to talk to the prof. in charge of the casting equipment to see if I can learn how to use it.

[tooter]

Originally Posted by CrankyOldMan

I'll be back on the engineering campus this summer, so it would be fairly easy for me to fab up an adapter plate. I'm also going to talk to the prof. in charge of the casting equipment to see if I can learn how to use it.

Do it, Cranky.

Heck, you could do it with just a drill press, a hack saw, and a hand file.

[CrankyOldMan]

Originally Posted by tooter

Do it, Cranky.

Heck, you could do it with just a drill press, a hack saw, and a hand file.

Agreed, though I would have a hard time using anything less than a knee mill. All of this of course pivots on me getting another 1ZZ TB, since the first one was given an autopsy to see how it goes together.

[47_MasoN_47]

I'd like to hear CTScott's take on this. He's been running a S/C for a while now.

[vten]

Definitely interested with the adapter , cranky. Hook a brother up :)

[47_MasoN_47]

lol, I've made a few small gun parts with hand files... I can't even imagine how much work one of these would be.

[tooter]

Aluminium is soft and really easy to work with, and the supercharger adaptor is just a piece of metal with some holes in it. I'm already hacking up a manifold just to see what will happen...

[cali yaris]

^ agreed. Super easy to make an ugly one just to test it.

[CrankyOldMan]

Looks like TOLMACH went and put an xB supercharger on his, and used the Tooter TB adapter to make it fit: http://www.yarisworld.com/forums/showthread.php?t=42913

[CrankyOldMan]

Some musings in CAD. I've got a block of 6061 in mind for this, just have to make time in the shop for it...

[tooter]

While most of my concepts never make it to reality, this 1ZZ bellmouth adaptor actually did. It's 2 inches thick so there's plenty of material work with. And lots of room to drill a hole in the side to add the breather hose fitting.

$185 including shipping.

When I had one made for the experimental tooter et, I also made one extra just to see if there would be any interest in a Blitz 1ZZ Adaptor.

[CrankyOldMan]

Originally Posted by tooter

When I had one made for the experimental tooter et, I also made one extra just to see if there would be any interest in a Blitz 1ZZ Adaptor.

I woke up this morning thinking about how this would work, and I think it may be slightly too big. I measured the neck of the Blitz at some point, but I've forgotten the exact dimension. I'm thinking 54mm O.D., but that seems awful small if the I.D. is 52mm. I'll have to take the calipers out to the car and measure it again.

[tooter]

Originally Posted by CrankyOldMan

I woke up this morning thinking about how this would work, and I think it may be slightly too big. I measured the neck of the Blitz at some point, but I've forgotten the exact dimension. I'm thinking 54mm O.D., but that seems awful small if the I.D. is 52mm. I'll have to take the calipers out to the car and measure it again.

The bore diameter of the adaptor/bellmouth is straight 55mm, exactly the same as the 1ZZ throttle body.



The bore diameter of the Blitz intake should be at least 46mm to fit the 1NZ throttle body. So there would need to be a perimeter transition of 4.5mm, or slightly less than 3/16 of an inch. That's how much the Blitz runner would need to be flared out at the end. It would leave a thin outer edge which would slip fit up inside the tapered bellmouth curve. It would then be needed to be welded from the outside.

If less than 2 inches were cut off of the Blitz runner, the adaptor would make up that difference, and the 1ZZ throttle body would end up in the same place as the 1NZ.