emissions and horsepower
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emissions and horsepower
I have a 79 bronco and the engine in it is a 351m out of a 77 f-250. My question is, am i exempt from certain emissions regulations because my vehicles engine is pre 1979 even though my truck is a 79? If i am, what can i do to the emissions controls to make more horsepower? Also, if I remove the catalytic convertor, how much horsepower could i possibly gain?
Right now the exhaust is stock except for a cherry bomb muffler. -1big79
Right now the exhaust is stock except for a cherry bomb muffler. -1big79
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Well in most states the year of the vehicle is decided upon the frame of the vehicle. What state are you from? Do a search on yahoo or google and you will be able to find the emission laws in your own state.
As for the emission equipment, it is illegal under Federal Law to disable or remove it.
As for the emission equipment, it is illegal under Federal Law to disable or remove it.
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From: Louisville,Ky.
You will gain a little top end horsepower, but you will lose some low end torque. If it is working fine, then I would leave it. If you get caught removing it, $20,000 fine. It is a federal law. I really doubt that the EPA will be stalking you though.
Jimmy
Jimmy
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Originally posted by MUDSLUNG
I don't care what state you live in.... I never heard of a '79 being tested for emmissions. I live in Ohio and I know that here it only goes back to '82, and maybe not even that far!
I don't care what state you live in.... I never heard of a '79 being tested for emmissions. I live in Ohio and I know that here it only goes back to '82, and maybe not even that far!
Here are the laws for where I live.......
VEHICLES SUBJECT TO EMISSIONS TESTING:
Municipality of Anchorage: 1968 and newer vehicles owned by a person that lives in the MOA, including Fort Richardson, Elmendorf AFB, Indian, Chugiak, Eagle River, Girdwood and Eklutna.
Fairbanks North Star Borough: 1975 and newer vehicles owned by a person that lives in the FNSB, including Eielson AFB, Fort Wainwright, Salcha and North Pole.
So YES it is important to check local emission laws
http://www.state.ak.us/local/akpages...reg/imtest.htm
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From: Gateway to the West
Missouri emission laws start with any vehicle originally manufactured as a passenger car or half-ton or less light truck on or before January 1, 1975. If you drop an engine from 1971 into the vehicle it had better be capable of meeting 1975 emissions standards (no visual inspections here though). Any 3/4 ton or larger vehicle is exempt from emissions inspection regardless of fuel type or year of manufacture. But there is talk of changing that.
In an answer to the original question, if your state's laws read as Missouri's do, the state doesn't really care how old the engine is because the truck was originally manufactured to comply with emissions standards for 1979. Therefore, altering the vehicle so as to render it incapable of meeting those standards is considered an infringement of the emission law and failure requires reinspection until it does or a receipt dated on or after the date of the initial failing inspection in the amount of $500.00 or more. Then, (at least in Missouri) a waiver good for a period of two years will be issued.
In an answer to the original question, if your state's laws read as Missouri's do, the state doesn't really care how old the engine is because the truck was originally manufactured to comply with emissions standards for 1979. Therefore, altering the vehicle so as to render it incapable of meeting those standards is considered an infringement of the emission law and failure requires reinspection until it does or a receipt dated on or after the date of the initial failing inspection in the amount of $500.00 or more. Then, (at least in Missouri) a waiver good for a period of two years will be issued.
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From: Greensburg, PA
In western PA, it's hit and miss. Some counties have emissions testing (the one I live in) and others do not. Our rules: 25 years old, and it's emissions exempt based on the date of vehicle manufacture. Failing emissions costs $150 in receipts, and another $45 for the test fee. That get's you 1 year free and clear (unless you cheat the system and keep your ride under 5,000 miles, then it's automatically exempt!).
