I'm having an intake manifold fabricated, and would like to know what has to stay. Vacuum fittings and sensor bungs aren't a big deal, but I'd like to know if either of these have to stay.

 

I hate to say this but if you don't know the answer to this question or aren't able to look up what these devices are then maybe you shouldn't be creating a custom manifold. It would seem to be a big project with questionable results.

 

Well, thanks for your straight forward and informative answer. I don't feel that I need the AWS. I can't see the need for it. The IAC valve I do think that I need. I wanted to get some information before I have anything done. Thanks anyway.

 

#2 is the ISC (or the plethora of other names that people call it) motor. Personally, at least in my application, it's debatable whether it can stay or go. If you've removed the a/c I say you can lose it. I still have mine but it's not doing squat. (Read: there are ways around not having it).

#1 I can't for the life of me remember.

Edit...there it is.

 

You can get rid of the AWS (the grey one), but you'll need to keep the black one. Might as well bypass the coolant route through your TB and pretty much eliminate all the AWS pieces while your at it.

 

Hehe....RX-7 club doesn't exactly have a reputation for being a helpful forum, does it? =P

 

I got rid of both and the car runs fine.

 

Nevermind, I take bak my statement. (thanks for the last 2 posters before me)

 

We'll be using a 75mm Mustang throttle body, so there won't really be anything to bypass.

 

Might as well chunk them both then.

 

so the uim is a restrition for you?

 

I agree with SurgeMonster on this one.

The stock UIM with a little clean up to it, will flow more than enough air to keep up with your setup, that is unless you are just trying something new.

local runs 9's on a stock UIM. I think you will be fine with it.

 

Just polish and have it honed, or you could get a J-Tech manifold.

 

Improving the UIM won't make much difference unless the LIM is honed or fabricated as well.

The stock FD throttle body is not very restrictive at all in comparison to the intake manifold that follows.

 

The UIM & LIM are both being fabricated. As for whether or not it's a restriction for my setup, I doubt it will make too much difference, but it's something I've been curious about for a while. The car is currently being built up for the Texas Mile, a one mile top speed event held in Goliad.

 

It will be few days.. but I'll send you pics of my UIM.. Its one of a kind.. well, maybe..

 

hey post the pics here too, if you can

 

post the pics here

 

Yeah, please post pics when you can. What sort of set up is it?

 

If all you care about is top speed, I trust you're going to make the runners a hell of a lot shorter then?

 

I dont remember who it was at sevenstock that had some replacement LIM's, maybe it was GroundZero (or whoever it wasthat made the Pineapple oil pan). Any way, their LIM had no place for either of those parts. They said it is for single turbo applications...
Their casting has both the front and rear rotor runners as identical but mirrored images, looked like it should be alot more even than the stocker. Their reasoning was they couldnt figure out why it was almost always the rear rotor that blew, and claim this took care of that issue.

 

Yeah, they will be shorter by about 6", and there'll be a 2 liter plenum in their place. They'll also be slightly wider and port matched to the manifold/engine gasket.

Tom93R1, I'd been told pretty much the same thing, which is what led up to all of this. We'd thought about adding aluminum to that spot, and just porting out the obstruction.