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How are you going to work the IAC? I don't think she will idle with only one cyl getting air or do you have them all tied in some how?

I was thinking about making a custom intake mani from the IMRC's back but haven't gotten up the guts to do it yet. If I do I'll make one that can accept at least a 70mm throttle body for when I go turbo.
 

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Discussion Starter · #4 ·
drivinonthinice said:
How are you going to work the IAC? I don't think she will idle with only one cyl getting air or do you have them all tied in some how?
You cant see from the pic, but there is a vacuume buss connecting all the cylenders together, so the IAC work's and have a constant vac source for the brakes, MAP sensor and other vacume crap.
 

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Discussion Starter · #6 ·
It's just a ITB manifold.
It does'nt do much good for us turbo peep's unless you build a plenum.

I would like to go on the record as being the first to have built a ITB intake manifold for a Escort, SOHC at least anyways.
 

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holy wow crap jeff! i thought of tihs a few ears ago but never had the cahones to do it.

which tb did you use? it kinda looks like the 3.8l tb, or 4 SPIs?
 

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NICE!
Is there enugh room left in the engine bay for a Plenum?
How did you cap the three other holes on the top side?
 

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Discussion Starter · #10 ·
There 4 1.9 TB. I have a 96 one on the end with the TPS attached so it works with a OBD2 sensor.

On some ITB web sight there is a chart that show's a I4 with 4 40mm TB should flow enough air for 200hp. So the little 1.9 one's make a nice match with out being over kill and loosing throttle pedal gain.
 

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So do you have any plans for adding on a plenum? Also if I can figure out how to draw what's in my head, I'll share what I had in mind for a mani. It would be ideal for turbo apps because our current manifold tends to favor giving the air to the end cyl.
 

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sexy! a guy on HMT did this about a year ago with 4 yamaha 1000 (dunno the motor or bike) t/b's. if you need any help with your set-up look into his post over there. i think its a sticky but not sure what section. this set-up will make alot of torque also. its a design widely used in circle track racing.

NEUMAN
 

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Discussion Starter · #14 ·
neuspeedescort said:
sexy! a guy on HMT did this about a year ago with 4 yamaha 1000 (dunno the motor or bike) t/b's. if you need any help with your set-up look into his post over there. i think its a sticky but not sure what section. this set-up will make alot of torque also. its a design widely used in circle track racing.

NEUMAN
All the Honda boy's are doing it now. I did a lot of reading on Honda-Tech, Home Made Turbo and vwvortex before I started, and a few other ITB sights

SgtRauksauff said:
That is fantastic. It puts a smile on my face. :)

what do you get for clearance from the firewall?

--sarge
It only stick out a tiny bit past where the stock manifold ends. There's room for filters.

I just think it look's cool 8)
 

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Mad props :wink:

How do you plan to do the throttle linkage?

Is there going to be enough room to mount the plenum directly on the TB's? Basically, how big is your plenum going to be?

Matt 8)
 

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Here comes the math man...

I honeslty think that a design like that may actually hinder your performance. The purpose of the plenum is to have air kinda "settle down", then accelerate through the runners and into the cylinders. By putting throttle plates there, you're probably going to completely screw up the momentum that the air has, and chances are you're going to get some really weird flow characteristics that I won't even attempt to touch on because my education currently doesn't extend that far. If I were to guess at it though, from what I do know, chances are you'd have a ton of turbulence at anything other than WOT, and your total specific mass flow would decrease substantially. However, you may increase the mixing capacity of fuel and air in the cylinder. I dunno. It's complicated.

Regardless, it looks like you're doing a nice job, and I hope it works out for ya.
 

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Jeff your awsome design---It's like a wet dream
Siragan,your thoughts-----It's like being woken up by an ugly ass mother in law from that wet dream.....
The design works on Hondas,Why not on an Escort?
 

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Discussion Starter · #18 ·
siragan said:
Here comes the math man...

I honeslty think that a design like that may actually hinder your performance. The purpose of the plenum is to have air kinda "settle down", then accelerate through the runners and into the cylinders. By putting throttle plates there, you're probably going to completely screw up the momentum that the air has, and chances are you're going to get some really weird flow characteristics that I won't even attempt to touch on because my education currently doesn't extend that far. If I were to guess at it though, from what I do know, chances are you'd have a ton of turbulence at anything other than WOT, and your total specific mass flow would decrease substantially. However, you may increase the mixing capacity of fuel and air in the cylinder. I dunno. It's complicated.

Regardless, it looks like you're doing a nice job, and I hope it works out for ya.
If you look inside of the manifold, past the first throttle plate, you will see a second throttle plate. That is the "split port" throttle plate, stock from the factory. If Ford does'nt have a problem with a throttle plate directly before the head port I think I'll be OK with one right before that.
 

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Discussion Starter · #19 ·
fixitmattman said:
Mad props :wink:

How do you plan to do the throttle linkage?

Is there going to be enough room to mount the plenum directly on the TB's? Basically, how big is your plenum going to be?

Matt 8)
Thanks
For linkage I was just gonna run to the hobby store and pick up some steering linkage from a larger scale R/C car. It's adjustable and should do the trick.

I will probly never build a plenum. In fact I may never run this set up at all. I just built it, just because. I had this idea stuck in my head and could'nt quit untill it was reality, and yeah I should really take the last step and make it run. I dunno, maybe some day.
 

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Build it. Do it nooowww. Do it :p

How many escorts do you have? There's got to be at least one you can throw that beast on to :wink:

Matt 8)
 
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