I am stripping out the emissions junk in my 1983 Honda Civic 1500 S, as this car will so be converted using a Redline and Weber carb conversion kit. My plans for the car are to auto x and daily drive it on rare occasions.

So I know these are called control box 1,2, and 3. I have found them in my Haynes manual but I have no idea what they are and what they do. Are they needed to make the car run? Are they emissions related? It would be nice to be able to take them out as they have a ton of vacuum hoses going in and out of them and the bay is cluttered. Any help would be appreciated and the pics are below:




The first pic is "Control Box 1" and the second picture is "Control box 2 and 3"
Really appreciate the help and hope I can take these out!

 

According to my vacuum diagram on the hood it says that both boxes 2 and 3 are for the EGR system...Seeing as how I already yanked out the EGR stuff I also pulled boxes 2 and 3.

Box 1 consists of :
Dashpot check valve
Cranking leak soleniod valve
P/J cut valve soleniod
Idle control soleniod valve
Control switch
a handful of check valves
Control switch
Vacuum holding soleniod valve
cranking soleniod valve

This is the list of things listed under #1 box on the hood of the car. Almost every single one of them pulls some kind of vacuum from the carb...Any info on removing the number one box would be appreciated again guys!

 

I also posted over on Redpepper with no luck either. I am making my block off plates today for the EGR system but need to know soon what box 1 is!

 

The Haynes manuals are pretty crappy for hondas, the actual reprint of the factory service manual would be a lot more help to you.

http://www.helminc.com

In those days honda used vacuum for many things under the hood, from idle control to the egr system.

They even had a version of that EGR box on the 88-91 crx HF. But its always worse on the older models since they had less electronics, and more vacuum controlled stuff.

The real shop manual will tell you what each part is on the blockout diagrams with troubleshooting and you can decide if you want to rip it out or not chances are, running performance carbs, you'll be ripping it out.

 

Well I ended up ripping the entire thing out. All three boxes are now gone. I went from like 50 some vacuum lines to 3 now. It ran awesome yesterday but not its not running haha. I have a bad carb though so it doesnt really surprise me. I will be ordering the Weber carb soon enough though. Yeah the Haynes does suck!