Aurora 4.0l / Izuzu 5 speed swap into 88 coupe (Page 60/102)
THE BEAST MAY 12, 10:37 AM
Thats it, cptsnoopy
Just go with a single 5" filter. But I recomend using two 3" filters. WIth one on the left and one on the right. Because I too have planned to go with ITBs I have thought of installing GT quarter Scoop windows and make a sort of funnel on each back side of the scoops to collect the air, and running a 3" pipes into the intake box.

Think about it.
JG
BMTFIERO MAY 12, 01:20 PM
I must say that the last few post on this thread have really been informative. But could one of you take time to explain the advanages of using ITBs to a engine mechanics newbie?

THanks,
Tim

I am not a thread Hijacker!!!
RCR MAY 12, 07:19 PM

quote
Originally posted by BMTFIERO:

I must say that the last few post on this thread have really been informative. But could one of you take time to explain the advanages of using ITBs to a engine mechanics newbie?

THanks,
Tim

I am not a thread Hijacker!!!



There is definitely a coolness factor, but other than that...It has to do with flow dynamics and the power band that an engine is designed to run at. In this case it's coolness.

Bob

Please don't take that the wrong way because I'd take it in a sec. 8)

[This message has been edited by RCR (edited 05-12-2009).]

cptsnoopy MAY 13, 05:38 PM
Hi Bob,

The primary reason for buying Russ544's ITB setup was the "coolness" factor. In fact it is also the most expensive part that I have purchased for my project. I do not expect any extra performance from it. If it does improve the drivability and or performance of the car that will be a bonus. The second reason is that it does not force me to change the routing of the transmission shifter cables. The third reason is that Russ found that his ITB system provided a better idle when using a Holly 950 Commandor engine management system.

Charlie

[This message has been edited by cptsnoopy (edited 05-13-2009).]

cptsnoopy MAY 13, 05:55 PM
Hi Tim,

Will can do your question justice. I am not well versed on the pro's and cons of ITB vs stock style single throttle body/intake manifolds. As posted above I really like the bling factor. One of the things I now have to consider is proper synchronizing of each throttle body to the others. I have heard that it can be a real PITA. I am hoping that it will go well.

Charlie
Erik MAY 14, 02:50 AM
a dual airbox ala F360 or f430 would really look sweet
cptsnoopy MAY 21, 05:11 PM

quote
Originally posted by Erik:

a dual airbox ala F360 or f430 would really look sweet



Hi Erik,

Not sure what that looks like but today I finally got all the holes cut in and the metal bent to match the angle of the ITB's. It needs to be trimmed some more but this is the basic idea. The FAI intake hole is only 3 1/8" right now as that is the largest punch I had. I will enlarge that as necessary to fit whatever tubing I end up using. For this to work properly I am going to need to cut and raise the decklid over the plenum. I will have to decide at some point if I will do that or not.
BMTFIERO MAY 21, 08:14 PM
Sweet!!!!
Russ544 MAY 23, 11:03 PM
If you cut off the top of the velocity stacks just above the base plate "gromet" area, would that allow it to go under the decklid once the top of the airbox is fitted? It might hurt the airflow above 10,500 RPM somewhat however.

Russ
cptsnoopy MAY 24, 04:24 AM
Thanks Tim!

Hi Russ, I am glad you brought that up. With the full height of the vel-stacks there is not quite enough room above them to draw air unrestricled. I would rather not cut them down because it takes away from the "bling" factor. If they really do nothing in the stock rpm range I will cut them down to achieve more space between the ITB inlets and the bottom of the decklid.