Exhaust question

After looking at my exhaust I figgered that my Cat was not original since it is welded on, I am wanting to order a new one either today or tomorrow in hopes I can get it by this weekend. I found the one I want but I am not sure if I need one with an air tube as I am trying to smog it soon. I am guessing that I did not have an O2 sensor so I am just wondering about an air tube, if I do need one, where would that hook up to?

 

if it's a true 1980, meaning the serial number starts out JOM83..
then no air tube from the converter; but you would have air pump and air injection manifold.
1981 was the start of the computer controlled systems here in CA.

 

What do you mean air pump and air injection? And that is how my vin starts.
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you would be required and the Jeep would have come equipped from the factory with an air/smog pump, valves and hoses that would attach to an air injection manifold that would bolt to the exhaust manifold.

 

similat to this in appearance
what's shown though is 1981

 

As far as I can tell, I dont have anything that looks like that under my hood, is that one of those things that were California only vehicles.

http://i165.photobucket.com/albums/u41/zylpher2/PIC-0064.jpg This is the best pic of my motor that I have right now, and my camera is being borrowed by a friend that is floating on a airport right now.

 

see that pipe plug in the front of the exhaust manifold, that's very bad.
means your holes are plugged and no air injection exists

 

you could just take it to inspection and they will fail it and tell you what you need to do.
the danger in that is if they tag it as a gross polluter, you'll be back every year for the test.

 

I dont mean to be a bother, but looking around the parts sites i cant find the air injection system, I can however find a smog pump. What is 4558-1 in the pic you attached? I can find the vacume lines and hosed I am sure but the parts i am not to sure about. What kind of problems would I run into without this system, other than not passing inspection.

Also, I must say, I hate california, just for the smog laws.

 

gulp valve or anti-backfire valve

 

Does any one have a picture of this set up mounted so I can get an idea of what exactly I am missing. I bought this jeep like this, so I dont have any of these parts lying around, it would also be helpfull with trying to find these parts.

For a 258.


Or, if some one can get me the dimensions of the manifold itself I could probally have one made, it looks fairly simple to do. the other parts I could probally find in junk yards or other places.

 

Jack, your jeep will run probably better than the early smog compliant jeeps without all the air injection stuff. Given that you have it tuned correctly. Early smog controls were notorious for degrading drivability and performance.

I see your location is listed as Pt. Magu, hopefully you'll be in the military, as I believe there is a smog exemption for active military while stationed in CA. There used to be, anyway. So hopefully, this shouldn't be an issue for ya. If you're not in the military, you're gonna have to come up with all the obsolete, NLA parts and make the whole mess pass smog. If that is the case, my condolences.

As for everybody wringing their hands over the draconian smog laws in CA, get ready, no matter where you live. The new green administration has already given a permanent waiver to CA, which for all intents and purposes, allows CA and other draconian states to set the de facto standard for fuel efficiency and emissions for all new vehicles. You will not see the auto manufacturers do a repeat of the CA/car vs. the 49 state car again. Too expensive.

As for situations like this, the reason for the hard nosed enforcement, even if replacement parts are no longer made, is to get the older vehicles off the road.
The law is very clear and simple in CA, in its basic form. If your vehicle is 1975 or older, no smog required. Ever. Everything 1976 and newer must have all the emissions equipment it came from the factory with, and pass smog. Sooner or later, the older stuff will not be on the road.

There is one other provision to the CA law that can save you a lot of money and headache. The person selling the vehicle is responsible for obtaining the smog compliance certificate, NOT the buyer. ANY 76 or newer vehicle is nothing but a parts vehicle without that certification.

Lots of folks don't know the law, and I'm seeing more and more guys getting burned in CA by the seller who disappears after the sale, or manages to buffalo the buyer about the smog laws in some way. That way the buyer gets stuck with the unsalable, unregisterable vehicle, and gets stuck with the pile of parts.

I think there should be a sticky somewhere up there that goes like this:

WARNING CA RESIDENTS: ANY VEHICLE 1976 OR NEWER IN CA MUST HAVE ALL EMISSIONS EQUIPMENT FROM THE DATE OF MANUFACTURE, IN THE PROPER WORKING CONDITION, AS A BASIC REQUIREMENT TO PASS CA SMOG LAWS. IT IS THE SELLERS RESPONSIBILITY TO PAY ANY COSTS NECESSARY TO OBTAIN THIS CERTIFICATE. THIS IS TO PROTECT THE BUYER FROM BUYING A VEHICLE WHICH CANNOT BE REGISTERED IN CA. ENSURE THAT THE SELLER INCLUDES THE CERTIFICATE, OBTAINED NO MORE THAN 30 DAYS PRIOR TO THE DATE OF SALE AT THE TIME OF VEHICLE TRANSFER. FAILURE TO DO SO MAY, AND MORE THAN LIKELY WILL BE THE CAUSE FOR HAVING TO PART OUT YOUR NEW TO YOU JEEP, OR WORSE YET, SENDING IT TO THE CRUSHER, WITH LITTLE TO NO COMPENSATION FOR YOUR FINANCIAL LOSS.

No politics here, it is what it is.

 

I bought my Jeep while I was stationed in New Orleans, and for the exemption, there may be but to get a base sticker I need a smog cert even though my jeep is still and will continue to be registerd in Lousiana. I have heard rumors of places 'round here that will "pass" you if you tell them it is only for a base sticker, I may try my luck with one of those. I will prolly go ahead and order the cat and take it to one of those places, if that fall through I may try to sell it as offroad use only and try to find an older jeep. I love this thng but being in Cali is a PITA with this thing. Luckily if i can get a sticker I will only have to do it once as my sticker would not expire before I leave this state.

I am not sure if they still do it, but I have read CA giving smog exempt status if you spend or have a estimate of over a certain dollar amount to get it fixsed, but you have to go though a bunch of crap to do it.

When I bought this heep I was planning on doing another tour in New Orleans where the inspection is a joke, lights, horn, reseve lights, hazards, and signals. I had no idea I was going to California untill about 2hrs after buyng it, I never thoguth it would be this muvh of a pain.

 

That is a drag. It just doesn't seem right that CA can cause a servicemember on active duty to have to sell their vehicle at a loss just because they were stationed in CA. After all, not much choice about that unless things have changed since my time with the green machine...

Jack, I would check with the California Air Resources Board (better known here as CARB) website, so you can get info on this directly from the folks who wrote and enforce the law. The info will be there.

There is so much misinformation concerning smog laws in CA that that is about the only way to get current, accurate info. I sure wouldn't trust the base MP's to have accurate knowledge, much less a random clerk at the DMV, or some guy running a smog test station. I went through a deal trying to get a vehicle registered a couple of years ago, had 4 different opinions on the law from 4 different DMV clerks, none in my favor. Once I got my hands on a copy of the law as written, that crap stopped, and the vehicle was registered.

Out of state military vehicles are a special situation. In this case, knowledge truly is power.

Good luck, and keep us posted.

 

So, I looked under the hood at the emissions sticker, and it says EGR+AGE+Cat. I know what EGR and CAT are, what does AGE mean?

 

Getting ready to take that crap off my truck. Will have the hoses and 2 pumps. manifold won't work for you (v8 351) but you are welcome to the pumps if you can figure a way to mount one. My 75 CJ had a smog pump.
Someone correct me, but wouldn't it do the same thing to just pump the air in to the pipe before the cat as to pump it into the m'fold? Always wondered what the dif would be. If so you could plumb a 3/4' line into the headpipe and hook the hose from the pump there. If nothing else it seems like it would dilute the ppm of the gases that will make you fail a smog test (co & so3).

 

Not to hijack this thread, but, just out of curiosity, what are the guidelines you need to follow for emissions in different states? I've heard (what I consider) almost horror stories about engine swaps being denied, not being able to license some vehicles, some pulled off the road, etc.

Here in Sask, Canada, there are virtually no rules. Do anything you want, so long as it's not too loud. Any engine, stuffed in anything, no matter how much it smokes or has any emission controls removed is fair game. The only cats are on new vehicles on the dealer's lots, everybody has been cutting them off for years. Even turbo'd diesels don't need a muffler as the turbo is considered to be a "noise suppressor".

But, I would imagine sooner or later, we too will have emission laws stuffed down our throats.

 

Canada, Eh?

i'm on my way!!!

lucky for me, my year smog is no issue. Ca is hell bent on smog issues (well, depending on the area). metro cities are strict, where the no-name towns and desert areas often have no smog requirements.

someone at my work has a late 70's cj7, he said smog shop would not let him smog because he had 2 exhaust outlets (amc 304 with dual mufflers. headers i assume). they told him he needed a collector to go through 1 muffler and have one output. i've never heard of that one-any truth to that?

 

Are you worried that you'll have to change a 49-states truck to meet the CA rules for that year? That's not how it works. If the truck was delivered in the 49 states (ie outside CA), it has to meet the emissions standards and have the emissions devices for a 49-states truck of that year. You do not have to install the CA-only devices.

But this is only for cars/trucks that were not originally delivered in CA.

 

As I understand it, anything that's not factory equipment and related to emissions is not legal, unless it has a CARB certification number.

The only exception to this that I've heard of is "replacement parts," ie you can run an Edelbrock 4V manifold on a car that was originally delivered with a 4V carb, but only with the original carb, and you have to retain all the original emissions devices (like EGR).