Emissions e-shmissions

[thedoctor]

I'm in PA with an 83 dl. We have emissions testing: the gas cap - that's it. In the mean time I am looking to simplify this EA81 to the maximum extent possible. I would love to disconnect every possible device that does not contribute to either efficiency or performance, with the emphasis on the former. What can I get rid of and exactly how? Right now I have a Carter-Weber carb, but I just bought a spare engine with the Hitachi. I am looking for a Weber carb to use with the Hitachi intake manifold.

[thedoctor]

OK, let me re-word the question. Not that I would disconnect anything illegally, but for academic reasons only, what extra equipment would be on an 83 dl, which, if removed, would simplify the operation of the vehicle? O2 sensor? Certainly the catalytic converter (mine is new so I'm really not going to remove it) Someone on this message board told me to disconnect my "computer crap" behing the steering column. I didn't, but I'd like to know if it is needed. Any thoughts?

[torxxx]

You need to get familiar with your car:

 

u dont have a computer in that car.

If you dont have a computer in it, you dont have a o2 sensor.

 

 

what you do is strip all the vacumn lines off the intake. ditch the evap canister. make sure you plug aLL the vacumn lines WITH NO LEAKS.

 

The only vaccumn lines you should have are one going to your choke/secondary, one to the heater, the big brake booster line and thats about it unless you have some sort of push button 4wd in that 83

[Skip]

Just a few things to consider.

 

83 could have a feed back electronically controlled carb

and an ECU with an 02 sensor.

If you do go to the Weber DGEV this is a mute point.

 

The Weber may or may not have a choke pull off.

 

The secondary barrel on both the Hitachi and the Weber

are not connected

to the intake manifold.

 

Hitachi having an internal vacuum source

Weber is mechanical

 

I also think this car will have a manually controlled ventilation system,

so there will not be a vacuum line to the heater.

 

I also think he may want to keep the distributor vacuum advance in the loop.

 

Serendipitous removal and plugging of the canister lines can lead to

the fuel pump causing a vacuum in the gas tank as it removes the fuel.

You must make sure the tank has a vent.

 

just some flatulous rambling

[Ross]

 

I also think this car will have a manually controlled ventilation system,

so there will not be a vacuum line to the heater.

 

 

 

There is a vacuum line running to the Fresh/recirc controls - the door near the fan is operated by a vacuum diaphragm.

[Skip]

Thanks Ross I sit corrected.,

 

never saw this on an early EA81

[NorthWet]

Skip and Ross seem to have covered most of the stuff, but I will make a pitch for civic responsibility.

 

Totally removing evaporative emissions control (charcoal canister) will cause a tremendous increase in pollution and neglible (if any) effect on efficiency/performance. It will uncutter the engine compartment. The direct venting of gas vapors will quadruple/quintuple the total emissions from your car. Might be nicer to just simplify it rather than remove it.

 

My green $.02

[thedoctor]

I definitely have an O2 sensor because I replaced it trying to get my ECS light to go off. Other than that, torxx, you're right that I need to get familiar with my car. I learn a little more every day (some more than others). It will take me a few days to digest the info in this thread.