Removing Emissions Equipment on 79 2.0 auto

[paulw106]

Hello all,

Just wondered if anyone has had any experience of removing the emission control junk from a carb spider, how much work is involved and will I need to change anything like the inlet manifold etc.

As I'm in the UK non of this is needed and I was hoping it might give me a few more horses.


Cheers,

Paul

[So Cal Mark]

you don't have to change the intake manifold, but the 1800 intakes are a better choice

[paulw106]

you don't have to change the intake manifold, but the 1800 intakes are a better choice

Thanks Mark,

Would I be able to use the original carb on the 1800 manifold?

Regards,

Paul

[Daniel]

yes you can but why would you want to do that ? the 79 Manifold is just fine for a stock or mild street performance
engine it's the Carb that is the problem this has the smallest venturies of all the 124s producing the least
amount of power ! Change the Carb and keep the manifold like i did or change both the manifold and Carb .

If your engine is stock changing the manifold isn't going to boast your power at all but the larger older Carbs
will !

[paulw106]

Thanks Daniel,

Any recommendations on which carb to replace the stock 79 one?.

Regards,

Paul

[Daniel]

ADF off a 76-78 will bolt right on plug the main vacum lines on your manifold that arent going to be used .

Your Welcome any time ...

[So Cal Mark]

we've used the 32/36 dfev carbs on the 79 intakes with good results. You need to use a spacer under the carb, otherwise it's an easy swap

[Eastlight]

Just saw your post.
I am not sure how much your '79 is like my '80 Spider (carburetor) but I am in the process of getting ready to remove my stock intake manifold in favor of a a single port manifold since I have a slightly larger carburetor.

First, I tossed out the charcoal fuel vapor canister and plugged the large main line from the fuel tank (I assume that is where it originates).

Next, there were about 10 vacuum lines connected to a plate at the rear of the stock intake manifold. I removed them all, then spliced the Vacuum Advance line together after removing the splitter and hoses that attached it to that manifold plate.

There was also some kind of (emissions) device mounted to the fender receiving a couple of the vacuum lines (just behind the charcoal canister). I threw that OE Japanese made device out too - not leaving that on my nice Italian car. Whatever disconnected hoses that were left over, I plugged. I think it was only 2, which will be removed/replaced/redirected when I change the manifold.
I think the only lines necessary for connecting to the new manifold are the brakes, vacuum advance and water line to the choke.

Before removing all the vacuum lines, I first disconnected those I thought unnecessary and plugged them just to see if the engine still performed as well as it always does. Since the car continued running without a problem, I threw all the parts in my junk box. The engine appears much neater without all the useless hoses, etc. cluttering up the compartment.