Forum Discussion
StirCrazy
Sep 08, 2023Moderator
Treefrog wrote:
My reading of the regulations is that there is one standard for all engines to meet. I personally didn't see the language you speak of; do you have a section and subsection of that rule you can refer me to? Thank you.
if you think about it an engine produced in 1985 (let's say a ford 5L for an example) was designed to a certain environmental standard which was the mandate at the time. Now let's jump to that same 5L in the lait 90's. the mandate then was tighter for enviormental requirements so along the way ford would have had to redesign a few things to make that 80's 5L meet emissions standards in the lait 90's. now is it fair that that 80s 5L you have in your mustang would have to meet the same emission standards as that 98 mustang? not at all, that why when they do air care, they punch the year/make/model/engine and everything else into the system before they start the test then they either pass or fail on the requirments for that time. so, it might not be engine by engine exactly, but it might have max levels for each year then maybe engine class will have varables ie.gas vs diesel
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