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Old 01-29-2014, 10:39 PM   #1
KI4UJO
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1975 Exhaust Emissions Specifications

Yes, I actually need to take a '75 C3 through an exhaust emissions test. No, I don't live in CA. In 5 or 6 TN counties, emissions testing is required for all vehicles 1975 and newer. So, what should this thing emit? I have access to an emissions analyzer, but need to know what I am looking for. If anyone can point me in the right direction, that would be great. I just want to make sure this thing will pass.
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Old 01-30-2014, 12:04 AM   #2
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Damn wish I could tell you but I only have some advise.
Seriously...MOVE!
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I'm not saying let's go kill all the stupid people...I'm just saying let's remove all the warning labels and let the problem sort itself out.
Old 01-30-2014, 07:00 AM   #3
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Call the folks at the testing center. They should be able to tell you the various levels you will need for the car to pass testing.

FWIW: if your car is tuned to stock specifications and if the emissions devices are operable, you should pass.

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Old 01-30-2014, 10:18 PM   #4
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The funny thing is, california doesnt require smog on 1975 vehicles! only 1976 and newer! This was a great relief to me when I bought my 75.

Stick some elecrtric cutouts on there so you can open them up and make more power when you need to
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Old 01-31-2014, 08:00 AM   #5
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Quote:
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...california doesnt require smog on 1975 vehicles...
The OP is in Tennessee.
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Old 01-31-2014, 08:25 AM   #6
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If you register your vehicle as a classic, historic, or antique, aren't some of those tests waived? When first purchased, I registered my '75 as a historic, only had to get it inspected once, then no more inspections. I knew it wouldn't pass the emissions, all I had to show was an estimated repair receipt for over $75 to get it fixed and the inspection emissions test was waived.
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Old 01-31-2014, 08:49 AM   #7
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FYI: If not modified too heavily, you may squeak by.


ANTIQUE MOTOR VEHICLE LAW

Antique Motor Vehicles.

Per Tennessee Code Ann. § 55-4-111, a person may register a vehicle as an “antique motor vehicle”

providing that certain requirements are satisfied. The vehicle:

• Must be a motor vehicle over twenty-five (25) years old and have a non-modified engine and body,


• Can be used for participation in, or transportation to and from, club activities, exhibits, tours, parades, and similar
uses as a collector’s item,


• Can only be used for

general transportation on Saturday and Sunday, and


• Can be used on any day for the purpose of selling, vehicle testing, or obtaining repairs to or doing maintenance on the

vehicle.


Note:


Both cars and motorcycles may be considered antique motor vehicles, if all provisions are met as stated above.

No renewal required.



The registration is a permanent registration and is not required to be renewed annually. Once assigned, the license plate cannot be reassigned to another vehicle.

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Old 01-31-2014, 12:50 PM   #8
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I registered as historic/antique in IN to avoid emissions.

Mine would not pass a visual, let alone a tested emissions exam.
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I'm taking care of my procrastination issues, just you wait and see.
Old 02-02-2014, 11:18 AM   #9
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Quote:
Originally Posted by C3C6 Norm View Post
FYI: If not modified too heavily, you may squeak by.


ANTIQUE MOTOR VEHICLE LAW

Antique Motor Vehicles.

Per Tennessee Code Ann. § 55-4-111, a person may register a vehicle as an “antique motor vehicle”

providing that certain requirements are satisfied. The vehicle:

• Must be a motor vehicle over twenty-five (25) years old and have a non-modified engine and body,


• Can be used for participation in, or transportation to and from, club activities, exhibits, tours, parades, and similar
uses as a collector’s item,


• Can only be used for

general transportation on Saturday and Sunday, and


• Can be used on any day for the purpose of selling, vehicle testing, or obtaining repairs to or doing maintenance on the

vehicle.


Note:


Both cars and motorcycles may be considered antique motor vehicles, if all provisions are met as stated above.

No renewal required.



The registration is a permanent registration and is not required to be renewed annually. Once assigned, the license plate cannot be reassigned to another vehicle.

The problem there is that they only want you to drive it on the weekend. It is driven during the week, at times, for reasons other than their "approved" reasons. Plus, it doesn't bother me if it passes, being that it isn't heavily modified.
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Old 02-02-2014, 08:03 PM   #10
c3c7 norm
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Quote:
Originally Posted by KI4UJO View Post
The problem there is that they only want you to drive it on the weekend. It is driven during the week, at times, for reasons other than their "approved" reasons. Plus, it doesn't bother me if it passes, being that it isn't heavily modified.
They? Well........there are a myriad of excuses that can be used to just about drive that restricted driving vehicle anytime. Most car club meetings and cruise-ins are on weekdays, those are bonafide occasions to drive the historic vehicle.

If pulled over............, I'm getting gas, I'm topping off the tank, I'm getting oil, filter, parts, cleaning supplies, wax, just worked on car, giving it a road test, etc, etc,. Most likely it's not going to be a daily driver anyhow, and unless your acting the fool on the road, you'll probably never get pulled over and get a few thumbs up.
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