Independant Throttle Bodies (ITB's/IRTB's)
- Thread starter flat_black
- Start date
flat_black
Member
Got an ECU. Going in tonight. ITB's on in a week or two or three, once I get the lower manifold back from gettin' welded up.
Greensleeper
Member
- :
- 2 GX 2011
Keep us posted...
With a fully done head and MAM destroker, it would be a killer motor!
With a fully done head and MAM destroker, it would be a killer motor!
flat_black quick question for you; Im in the midst of an ITB project for my Protg as well. At the moment Im working on transitioning my newly fabricated individual runner intake manifold to the intake ports on my spare head (port matching). But Im not quite sure what to do about the cut-out (in the otherwise oval shaped port) that the injectors formally fired into. Ive now moved my injector locations about 4 inches up stream from the stock spot (to take advantage of the better fuel atomization potential of an ITB set up) and am unsure whether I should carve that cut-out out of my new manifold as well, or if I should try to have that cut-out (and the shallow valley behind it in the head) filled with weld and smooth it out to leave me with a nice cross sectional area transition?
Did you have to tackle this problem as well in your project? Or did you leave your injectors in the stock location?
Did you have to tackle this problem as well in your project? Or did you leave your injectors in the stock location?
ke20sprinter
Member
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- Daily Driver Protege5
nolanspawn said:
This looks like the Toyota 4AG 20V ITBs mated to a Mazda motor...It comes from the JDM Levin/Trueno, a FWD 1.6 liter 20 valve engine. I've read somewhere on the net that some people put the ITB in their Miatas, using a TEC2 ecu. Those ITB go for around $100-250 & you have to make your own adapter to fit.
WiL
Here's one link on installing one in a RWD AE86.
http://www.club4ag.com/faq and tech_pages/ae86_project 20V.htm
Here's a company that sells the adapter for a 16 valve Toyota for the ITB:
http://www.technotoytuning.com/t3_site_pages/products/itb_adapter.html
ke20sprinter
Member
- :
- Daily Driver Protege5
dmitrik4 said:
Sorry, the link was just for reference to what an adapter looks like. It would have to be custom made...maybe a 1" thick plate to adapt it to the mazda motor.
EDIT: Found the site:
http://adrenalineracing.com/product...d/240?osCsid=fca8bf63c9bfe23de84a1973ade329e9
It's for the Miata engine...Don't know if it's the same bolt pattern for the intake manifold as the protege.
EDIT AGAIN: This guy can make adapters for the ITB, I've seen his work, he's really good.
http://www.danstoy.net/
WiL
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flat_black
Member
I am. But alas, it's gone by the wayside. Financial responsibilities, mixed with playing with my new bike, issues with my EMS of choice, and so on.
Bleh. Hopefully, soon, I'll have some more updates.
Bleh. Hopefully, soon, I'll have some more updates.
flat_black
Member
Checked 'em out. Spacing is a bit too tight for the Protege, but it could be made to work pretty easily. I'm using Weber DCOE style ITB's. As for power, no one has a definitive answer, yet.
flat_black
Member
Yeah, they're installed, and running just fine. =) Idle's a bit high, but I managed to get it down to about 850-900 rpm. The tune is rough, but it works pretty well. I'm piping things through the MAF, since it seems to have better resolution. The throttle response is... Well, frightening, at least. It makes the car quite hard to drive, but I think that's the ITB's working in conjunction with the lightened rotatey bits, really. The car runs weird, but is fast as... Well, it's hard to explain.
I can't register it on the road anymore, so I'm going for an all out track car, and will be pulling the block soon to make some final changes, and lighten the car even more than I have, then off to the dyno, then to the track. Still lots of stuff to do, but it's all sorted out.
As a warning, my setup has gotten extremely expensive, and I'm not entirely sure it would be advisable for anyone to follow in my footprints. =)
I can't register it on the road anymore, so I'm going for an all out track car, and will be pulling the block soon to make some final changes, and lighten the car even more than I have, then off to the dyno, then to the track. Still lots of stuff to do, but it's all sorted out.
As a warning, my setup has gotten extremely expensive, and I'm not entirely sure it would be advisable for anyone to follow in my footprints. =)
Awesome!!! What engine management did you end up using anyways?
I can't imagine the throttle response--it has to be amazing, especially if you have some stiff motor mounts. I bet it sounds sexy as hell too. Pics and vids are required
Extremely expensive... probably, but what isn't? Turbos, built motors, dental work.
I can't imagine the throttle response--it has to be amazing, especially if you have some stiff motor mounts. I bet it sounds sexy as hell too. Pics and vids are required
Extremely expensive... probably, but what isn't? Turbos, built motors, dental work.
flat_black
Member
Yeah, this has ended up costing me about as much as a turbo kit for the ITB's and EMS. The EMS, I've actually got a new one that I'm playing with, and I'll post up that one's results, if it works, since it'll probably lead to better results.
Sound and video, you'll have to give me a while. =) The car is in a friend's garage right now, and I've got to register/smog it, if it's going to be on the road, which I doubt. If not, then you'll have to wait 'till next track day.
Also, I need to steal my camera back from the individual borrowing it. Bleh.
Sound and video, you'll have to give me a while. =) The car is in a friend's garage right now, and I've got to register/smog it, if it's going to be on the road, which I doubt. If not, then you'll have to wait 'till next track day.
Also, I need to steal my camera back from the individual borrowing it. Bleh.
Boo California emission laws, hooray beer!
Oh. Definitely want to see it on the track and dyno. I've got a bunch of turbo junk here but ever since my friend told me he was getting a GSR motor and then ITBs on it in his Civic, I caught the NA fever again. I wish I could catch a fever that wasn't expensive!
Oh. Definitely want to see it on the track and dyno. I've got a bunch of turbo junk here but ever since my friend told me he was getting a GSR motor and then ITBs on it in his Civic, I caught the NA fever again. I wish I could catch a fever that wasn't expensive!
