Ok im fabbing a manifold using my old bmw tb (65mm in - 65mm out) but after a careful look over i couldnt figure out how to use the honda iacv or any other way of controlling idle



the two same size pipes are for coolant to pass threw the tb so thats not a problem


this hole on the backside of the tb plate is from the smaller of the 3 pipes on the bottom. curious if this could be used in anyway.


any one have a clue how i can adjust idle on this thing?


Modified by ferio 95 at 6:14 PM 1/24/2005

 

I'm a little confused, are you gonna make an itb ? Or what car is this tb going on ? Because the IACV is not even located on the throttle body, its on the mani. All you have to do is make a custom plate and hook up coolant lines to it. Here like this.

 

ok maybe i didnt explain it as well as i thought i did. the Honda tb uses bypassed holes to get air to the IACV and FITV well this BMW tb im matting to a gsr manifold doesnt use the IACV so i need a way to get air into the IACV line. the adapter plate that will be added to allow the bmw tb to be able to bolt up. what ive come up with so far is to tap into the IACV air channel and run a spout out the manifold.

 

the hole that comes out behind the butterfly can be used, i think.


it could be used for the part labeled ath of air flow, to allow air to enter the intake mani.

you could just drill and put a fitting in before the butterfly, route that to the iacv for the source labeled air passes through throttle body/

just a thought

 

exactly but the problem i noticed there is no room to drill into the tb because since the butterfly is so far up. so what was to drill a hole on the manifold where the iacv air flows and thus giving the same result. but what i thought about the problem with that is how to get the map sensor to read it. as well as how to even get the map sensor to work with it

 

now im wondering if i can use the smaller of the 3 ports for my map sensor

 

Ihave a pic i'd like to send you, also, you could just drill and tap right after the butterfly and remotely mount the map sensor

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ferio 95 &raquo;</TD></TR><TR><TD CLASS="quote">ok maybe i didnt explain it as well as i thought i did. the Honda tb uses bypassed holes to get air to the IACV and FITV well this BMW tb im matting to a gsr manifold doesnt use the IACV so i need a way to get air into the IACV line. the adapter plate that will be added to allow the bmw tb to be able to bolt up. what ive come up with so far is to tap into the IACV air channel and run a spout out the manifold.</TD></TR></TABLE>

Ok, well look at my pic that I posted, those two nipples added are actually for vacuum not coolant. So wouldn't something like that work ?

 

I agree with 90crx you should just remotely mount your iacv as per the picture shown . Once you have a plate for the iacv made you can make a duplicate one to cover the opening on the manifold, but the one on the mani will only have one nipple on the vaccum side of the manifold. All you have to do then is run a small amount of hose between the two plates you just made . Besides the only reason that the normal path is routed through the t/b is so that the air that is being provided during idle is filtered.
did that make sense ?

 

yes that makes perfect sense and was one of my original ideas. but the two pipes on the bottom are in fact for coolant and cant be used as vacuum


this is a pic i made from what i assume your trying to say

 

Exactly !!! Why do you need to use the coolant lines on the t/b anyway? couldnt you just leave those capped off or something. From the picture it also appears that you could use that smaller nipple for your map signal as you stated.

 

the coolant lines act like the coolant lines on a normal tb. coolant is passed threw the tb to keep it warm so that cold starts wont be a problem. yes i noticed that i could use that smaller nipple but its alot larger then the nipple on my map signal so i need to figure out how to get that to cooperate but thats not that big a deal.

 

here is a picture of the tps sensor


the only problem is i dont have a plug for it and it doesnt seem to be adjustable so i dont see how i can get it within range of a honda tps or even read it

 

Looks like you can take it apart though, if so try to and see what your working with inside.

Also, I am curious. Why are you doing this ? There has to be a good reason, but I don't see one.

 

ok i found a plug for it that works.

and as to why im wasting my time with this.

#1 free

#2 larger bore TB then my stock gsr

#3 bordem

#4 running an open chamber gsr manifold and want to run a larger diameter tb but dont have the money for a premade peice

#5 what if it makes a badass difference?


Modified by ferio 95 at 4:18 PM 1/23/2005

 

I see, ok you found a plug but anyway to adjust the tps ?

 

nah i found a plug that will snap onto the tps so i can at least read the voltage once wired into my harness

 

You might have to open up the bmw tps holes so you can adjust it.

 

as in slotting them?

 

You know the mounting holes for the tps, well there perfectly circle right now. I would basically make them a circular rectangle maybe with a little bit of a curve so you can adjust it. Here I got you a pick

 

oh ok yea that could work and i have plenty of room onthe bmw tps to slot it out like the honda tps

 

shipped off the TB to a freind for boring. took a few pics during the process





after some polishing

 

nice project

i wanna hump it

 

Flitz it, ask your friend how that thing is ?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 90blackcrx &raquo;</TD></TR><TR><TD CLASS="quote">Flitz it, ask your friend how that thing is ?</TD></TR></TABLE>

sorry i just dont get what your saying