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who here has an itb setup - Click HERE for Original Thread

Fish_e_o
i'm thinking about making one for kicks.. i have an extra manifold that i'll never use and a bunch of throttle bodies lying around (49mm) so i think i'd like to see one in action or at least see one..

but what about vacuum how did you guys get through that one??









i f-ing hate google adds:mad:

chris f
tap each tb after the plate, put a pipe barb in each one, tee them all to a box that holds your map senser

Fish_e_o
quote:
Originally posted by chris f
tap each tb after the plate, put a pipe barb in each one, tee them all to a box that holds your map senser

i was thinking that...

but would that really get an accurate reading??? with the end of the runners so close??

ae1969
Tap it right into the manifold. (M6) and use a banjo bolt.
If the intake is aluminum helicoil it....

Fish_e_o
quote:
Originally posted by ae1969
Tap it right into the manifold. (M6) and use a banjo bolt.
If the intake is aluminum helicoil it....


but the manifold i'm thinking of is 2" long:dunno:

will i get an accurate reading?

would i have to go with smaller tb's to get a better reading?

ae1969
If you are using the stock ECU..... it will work like shit........

Not enough vacuum......and would pulse. Idle would be near impossible to set.

The only possibility is to tap each runner and run lines to a canister.......or possibly use some check valves and isolators.......

but with those solutions stand alone would be ideal. Your stock computer would be throwing codes left and right.........thats IF it even idled.

Fish_e_o
quote:
Originally posted by ae1969
If you are using the stock ECU..... it will work like shit........

Not enough vacuum......and would pulse. Idle would be near impossible to set.

The only possibility is to tap each runner and run lines to a canister.......or possibly use some check valves and isolators.......

but with those solutions stand alone would be ideal. Your stock computer would be throwing codes left and right.........thats IF it even idled.


thats what i was thinking.... :mad:

i wonder if that check valve idea would work but only modified to have a slow leak.. kind of like the lifters you would run if you want a smooth idle with big cams.. i really don't know how to explain this:confused:

edit* rhoades lifters or something

ae1969
quote:
Originally posted by Fish_e_o
thats what i was thinking.... :mad:

i wonder if that check valve idea would work but only modified to have a slow leak.. kind of like the lifters you would run if you want a smooth idle with big cams.. i really don't know how to explain this:confused:

edit* rhoades lifters or something



Doable.... but you still won't be able to eliminate the pulsing completely.

If you decide to convert to standalone it may be worth a try. You can at least have more control over your idle/map cells.....

Fish_e_o
quote:
Originally posted by ae1969
Doable.... but you still won't be able to eliminate the pulsing completely.

If you decide to convert to standalone it may be worth a try. You can at least have more control over your idle/map cells.....


so now it's turned into "if i can design such a thing"

well here's to nothing lost if it doesn't work:beer:

Adam
The lines from each runner to a separate box with a map sensor has been done before. I remember reading it on the Org years ago.

If youre building it yourself it wont cost you that much to experiment. Try it...:thumbup:

Fish_e_o
quote:
Originally posted by Adam
The lines from each runner to a separate box with a map sensor has been done before. I remember reading it on the Org years ago.

If youre building it yourself it wont cost you that much to experiment. Try it...:thumbup:


the thing i'm most concerned about is the brake booster:confused:
maybe i'll have to build a separate vacuum chamber for the booster aswell..:confused:

other than that the pcv doesn't need much and the cams i have throw off my idle anyway..

we'll see... it'll be fun either way





i f-ing hate google adds :mad:

IDTrav
fuck the ITB's haha...fab up an intake mani w/ dual sidedraft Webers :beer: Cheaper + Louder

newaccorddriver
quote:
Originally posted by IDTrav
fuck the ITB's haha...fab up an intake mani w/ dual sidedraft Webers :beer: Cheaper + Louder


i think the goal is to move ahead in time, not take a huge leap back into the carbs. theres a reason why im not running carbs on my A20, too complicated...


i might to an ITB setup in the future, but i doubt it as i have better plans for power

Fish_e_o
quote:
Originally posted by newaccorddriver
i might to an ITB setup in the future, but i doubt it as i have better plans for power

we all have better plans and then we run out of stuff to do

i plan to modify it to use with a turbo setup later:fingersx:

newaccorddriver
quote:
Originally posted by Fish_e_o
we all have better plans and then we run out of stuff to do

i plan to modify it to use with a turbo setup later:fingersx:



thats exactly what i was thinking, but ITBs arent easy to modify when you go turbo.

Fish_e_o
quote:
Originally posted by newaccorddriver
thats exactly what i was thinking, but ITBs arent easy to modify when you go turbo.


it'll just look like a honda

(like it has a header in the front):lol:

i've made headers before it's no big deal:thumbup:

should be sweet though.. i'll take pictures and stuff as i go along:thumbup:

newaccorddriver
ive seen that intake manifold you made. it looks interesting, if you somehow get ITBs on, then making the rest of the intake portion should be easy for you when you go turbo.

take lots of pictures:thumbup:

Fish_e_o
[IMG][http://img227.imageshack.us/my.php?...22062239fx1.jpg[/IMG]

http://img388.imageshack.us/my.php?image=1022062240yj4.jpg

and this is were i start

a virgin 2.4L intake manifold off of a 98 stratus

soon i cut it and start the fab work:D

Fish_e_o



cut at an angle so it clears the hood:thumbup:

and the porting has started:thumbup:

it wont go on my car... i'm making it for a friend who has a neon...

he's going ms&s with bigger cams than me... and i also want to retain drivability:beer:

Soulfly
lol.. Badass! I hope that all works out for you! :thumbup:

THUD
Don't know if you have seen this but it's a good example of whats involed.
http://www.homemadeturbo.com/tech_p.../itb/index.html

dance_of_curse
theres quite a few people on dorikaze who run itbs...stock 20v and modded for 16v...:)

Fish_e_o
i'm having second thoughts about this... i cut it shorter than most and at an angle but i don't know if it will fit...:confused:

only time will tell:fingersx:

newaccorddriver
im tempted to go ITBs for my setup after i get everything running smoothly, but the management you must run is probably harder to tune

Fish_e_o
quote:
Originally posted by newaccorddriver
im tempted to go ITBs for my setup after i get everything running smoothly, but the management you must run is probably harder to tune

no it's not too bad... if you get a vacuum container for the brake booster and one for sensors etc. it's not to bad:dunno:

THUD
Well remeber if it's your first one it's gona be a prototype so if you can't close the hood....to bad tweak it and tune it then make a better fitting one with all you learned but as for turboing them i don't think its worth it.

Fish_e_o
quote:
Originally posted by THUD
Well remeber if it's your first one it's gona be a prototype so if you can't close the hood....to bad tweak it and tune it then make a better fitting one with all you learned but as for turboing them i don't think its worth it.


i think i'll just move the hood:lol: or run without a hood...

actually if it doesn't fit i'm going to take a triangle out of the manifold somewhere close to the flange, heat it up really well and just bend and re-weld :dunno: i'm lazy like that..


definetly not worth turboing it with that manifold!! but it would be so cool!!!:thumbup:

Ayeso
I had ITB's on my built singlecam. I modified the cbr stock airbox to work under my hood as well as I was planning on turboing, but ended up going straight NA.

12.5:1 Compression and a stage 2 cam worked nicely, was kinda loud though lol..

McFly
I have itb's on my gtr.
given they are stock but if i wish to conver to map sensor i either have to tap a sensor in the 3 and 4 tb's or i use my balancer tube.

Taping the tb is a bitch to tune because you get ever reverb and the pulses suck to tune supposedly.

That is fi though.

newaccorddriver
quote:
Originally posted by McFly
I have itb's on my gtr.
given they are stock but if i wish to conver to map sensor i either have to tap a sensor in the 3 and 4 tb's or i use my balancer tube.

Taping the tb is a bitch to tune because you get ever reverb and the pulses suck to tune supposedly.

That is fi though.



arent you supposed to tap every ITB you have when you use a map sensor?

Fish_e_o
quote:
Originally posted by newaccorddriver
arent you supposed to tap every ITB you have when you use a map sensor?

you don't have to... you would just be assuming that the vacuum is the same in each one....

results tend to be better when you use all of them




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