maybe: ITB setup

Evan

Evan

Active member
would anyone have interest in an ITB setup for newer ej engines?

direct bolt on (+map based tuning) for 99+ n/a cars,

or turbo 2.0/2.5's that want to drop their throttle body and hard line IC piping right to the intake mani (just remove the throttle body butterfly).

if you dont know what i'm talking about then this may not be something you want to endeavor upon.
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kit would be:

4 properly sized ITB's (not bike parts)

4 cone filters

option for velocity stacks/trumpets

TPS sensors

Throttle linkages

Parallel fuel rail setup w/ braided lines + AN fittings

270, 440 or 800cc injectors

if it looks like something that would be worth my time, i'll finish making all the custom parts
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if not, i'm gonna use em for another project.

 
lack of:

intake track restriction,

intake plenum restriction,

intake manifold runner imbalance,

quicker throttle response,

tunable response curve/peak power point (w/ velocity stacks)

awesome sound :-)

 
I have seen this attempted by a couple of pretty gifted fabricators over on NASIOC with some pretty limited results on turbo cars. H motor as opposed to an inline where you'd usually see this creates a bit of a nightmare for the throttle linkage. Absolutely not for the faint of heart.

 
WHat about Extrude Honed intake, matched ports, bigger injectors, bigger TB, phelonic spacers...like we used to do in the 5.0 days? Works awesome on MAF cars. And you can still close the hood for those rainy days.

-----Added 5/11/2009 at 08:12:07-----

I have seen this attempted by a couple of pretty gifted fabricators over on NASIOC with some pretty limited results on turbo cars. H motor as opposed to an inline where you'd usually see this creates a bit of a nightmare for the throttle linkage. Absolutely not for the faint of heart.
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It would be neat for a NA car. Linkage can be copied from the dual Webber Porsche (VW cough.. ) conversion, not so difficult, I had a linkage tree on my 914. Def not so special for a turbo car. There are way more practicle means of making power on a turbo.

-----Added 5/11/2009 at 08:32:30-----

I'm imagining a lot of chrome and polished stuff on top of a GC engine.

 
I have seen this attempted by a couple of pretty gifted fabricators over on NASIOC with some pretty limited results on turbo cars. H motor as opposed to an inline where you'd usually see this creates a bit of a nightmare for the throttle linkage. Absolutely not for the faint of heart.
Click to expand...
the main problem the furthest along attempt on nasioc is that he started from scratch, making it much harder, slower, and eventually leading to the end of the project when he ran out of machining resources. this setup wouldnt have any of the same sealing/mating problems.

the linkage thing isn't too tough. personally i'd rather do it w/ cables and an added central pulley so that it has a cleaner look.

i already made my own parallel fuel rail, this shouldnt be much worse. i think finding a use for it (or a buyer) is gonna be the hardest part. my next motor isn't laid out for this type of setup.
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What about Extrude Honed intake, matched ports, bigger injectors, bigger TB, phelonic spacers...like we used to do in the 5.0 days? Works awesome on MAF cars. And you can still close the hood for those rainy days.
Click to expand...
factory can always be improved, but when it comes down to power mods, you can always just ask yourself one question:

did f1 do it?

yup. ITB'd on both n/a and FI cars since the 80's. it may not be practical but neither are gt30's. they're fun.
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a properly tuned stack/trumpet (big help) could be fairly long depending on all your variables, but they can be elbowed towards the new found gap at the center of the motor.

 
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would anyone have interest in an ITB setup for newer ej engines?direct bolt on (+map based tuning) for 99+ n/a cars,

or turbo 2.0/2.5's that want to drop their throttle body and hard line IC piping right to the intake mani (just remove the throttle body butterfly).

if you dont know what i'm talking about then this may not be something you want to endeavor upon.
default_additional_iam.gif


kit would be:

4 properly sized ITB's (not bike parts)

4 cone filters

option for velocity stacks/trumpets

TPS sensors

Throttle linkages

Parallel fuel rail setup w/ braided lines + AN fittings

270, 440 or 800cc injectors

if it looks like something that would be worth my time, i'll finish making all the custom parts
default_wink.png


if not, i'm gonna use em for another project.
Click to expand...

I would be very very interested in this for my g35. I was talking about a test run on making my own on my civic b4 it gets turbo's. I LOVE ITB'S I would want v.stacks and all that on the g35 as it isn't my dd anymore. If you can help or have any ideas lmk... btw your car looked pretty good today when I passed ya.

 
the g looked good too. unfortunately i dont know much about the intake setup on those so it may not be as easy. either way i can tell you you'll need to get a tunable EM to make it work. its easy to ghetto rig it on civic because you can just use (undersized) motorcycle throttle bodies.

 
For a 4 cyl boxer you'll use 4 individual throttle bodies, with horns, or trumpets.

chevy example

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Porsche 6 cyl. examples

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