>incoming emissions standards for 1975 are strict at fuck>American manufacturers plan to start using catalytic converter to meet the requirements>Honda feels bad for GM and shows them how to modify a 350 sbc with CVCC technology>this design passes emissions without cats or a major sacrifice to power>GM tells the japs to fuck off>proceeds to manufacture a 5.7L V8 with 160hpSo we entered the malaise era just because GM was stubborn and racist?
>>28737444ford and chrysler licensed the cvcc tech from them and still pumped out the same 160hp bullshit. had nothing to do with the malaise era.
you want gm to scrap pushrods and solid rockers after the 4/6/8 fiascoget fucked nigger
>>28737444Well the no-cat sbc cvcc prototype also made 160 hpWould've liked to have seen a cvcc and cat design on perhaps the corvette to keep it a performance car instead of a boogie night cruiser but gm was too hard headed for ththa
Euro and Japanese cars also lost significant hp in USDM spec.
>>28737444>>28737453Chrysler had the computerized Lean Burn system which met emissions requirements with no catalytic converter and was ahead of its time, but boomer good ol' boy mechanics complained because they didn't know how to work on it.
>>28737444Oh my sweet summer child, you fail to realize this is just Tuesday for GM until they almost went under and had to be bailed out.If anything their biggest sin was what they did with Saturn as a brand.
CVCC was a disaster, why are you people so niggerish towards catalytic converters when they are simple and Just Work� It's almost as if theres a reason CVCC isn't still in use?
>>28737531Any and all emissions controls should be outlawed regardless but>filled with precious metals so they're a target for niggers and wiggers to steal them>because they're filled with precious metals, depending on what car you have and what emissions law it has to follow they can be expensive as shit (remember when the prius was a common victim?)>it's illegal to install used catalytic conveters, a mystery as to (((why)))>reduce power on certain car models because of exhaust pressure
>>28737567>it's illegal to install used catalytic conveters, a mysteryThe cats gradually stop working over time as the platinum in them is blasted out the exhaust.
>>28737444GM had functional fuel injection systems it developed itself, D-jetronic was coming on Mercedes cars since 70 or 72, and by 75 domestics were playing stupid they didn't know how to clean up emissions. Don't pitty them. >>28737531The cvcc style sbc head didn't include 50 vacuum control valves to constantly adjust the tune. If you ever owned a cvcc honda and ditched the stock carb you would know.
>>28737522The S-series was losing them a lot of money.
>>28737531>cats "just work"The problem w cats is not that they do not work as advertised. It's a problem most people have never even considered.What is the stoich a/f ratio? Where, if you recall, is that measurement taken? What exactly does a cat do and why can it do it? And why does the CAT require EXHAUST w stoic a/f ratio (hint: because without it, it doesn't work, and is ruined). Hence why lean-burn is not legal in the US.Many do not know that one can run another engine on the exhaust (pre-cat) from your typical automobile. Many never question how in the 60s, they had a 100-200mpg carb as many others had also claimed, but we still get 30mpg.Well ... now you know.
>>28737444https://youtu.be/Qq7wnMvLYg4?t=67
>cvcc techIt was shit
>>28737444Checked, but there'll be more to it than that. Nobody is racist if the money is right.
>>28737802the EPA were literally retarded. they were redefining emissions standards yearly and made it next-to impossible for manufacturers to keep up.
>>28737444Fucking Christ.
yeah, trucks were based in the malaise era
>>28737444No. As other anons have posted, GM had their own technology to address the issue. (as did Ford and Chrysler, for that matter) GM are just generally really goddamn stupid. Like, epitomizing the toxicity of American corporate culture, stupid. The whole "50 more lawyers" comment springs to mind.
>>28742250Where's all the vacuum lines?
>>28742281Trucks weren't subject to as much regulation as passenger cars back then, a lot of the more hated emissions stuff in the 70s was not in them.
>>28742287eg. cars required to have a collapsible steering column since 1968 trucks not until 81. no requirement to have a center rear brake light on trucks until 91 while cars did since 86.
>>28737864>What is the stoich a/f ratio?Uh 14.7>Where, if you recall, is that measurement taken?Usually a foot or less right out of the exhaust manifold>What exactly does a cat do and why can it do it?Catalytically split n from o2 and h from c because precious metals heated to like 1600f>And why does the CAT require EXHAUST w stoic a/f ratio The engine actually swings between slightly rich and slightly lean because of chemistry reasons to make the cat work as intended because there are 3 different chemical systems built into it to deal with 3 different types of pollutants (so hence the name 3 way cat)>(hint: because without it, it doesn't work, and is ruined).Well yeah, too much unburnt fuel and it will overheat and melt, and too lean will melt your engine anyway >Hence why lean-burn is not legal in the US.Skyactiv-x>Many do not know that one can run another engine on the exhaust (pre-cat) from your typical automobile.Are you trying to imply there is excessive fuel or excessive oxygen in engine exhaust? Because again the former causes your cats to literally glow red hot if it's bad enough >Many never question how in the 60s, they had a 100-200mpg carb as many others had also claimedPutting a lawnmower carb on a 6 liter so it makes 45hp in a 2500lb car then driving with 10% throttle downhill with a tailwind isn't exactly groundbreaking secret banned tech>but we still get 30mpgBecause it's easier to cheat emissions and economy with fuckhuge 6500lb trucks than to actually innovate engine tech, especially when 80% of people want the truck anyway >Well ... now you know.Do we? Do you?
