Straight Six to Replace 5.7 Hemi?

Discussion in 'Challenger News, Articles and Media Reviews' started by SRT-Tom, Dec 14, 2021.

  1. Cloverdale

    Cloverdale Full Access Member

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    The current gen Mopar V8's are not Hemi's. You're living a memory that's about five decades old now.
     
  2. SRT-Tom

    SRT-Tom Well-Known Member Staff Member Super Moderator Article Writer

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    What makes a HEMI is the design of the head (which is not a wedge head like other engines) and the position of the two canted valves.

    A modern 5.7, 6.1, 6.2 and 6.4 HEMI has two canted valves that open into the cylinder and a centrally placed spark plug. That is why Dodge calls them HEMIs.

    The only real thing that keeps the new HEMI from being classified as a true "old school" HEMI is a quench area that was put in between the two valves to slow air speeds, increase turbulence in the chamber, and help emissions. Dodge also added a second spark plug for emissions. The original HEMI was a pig with fuel. The present HEMI head, even with the new emissions improvements, still flows comparable to some of the best heads produced today, thanks to the domed old school hemispherical design. Compare and LS head and a hemi head and you will see how much better a HEMI design is.

    Here is a more detailed explanation, provided by Motor Trend:

    "Chrysler first experimented with Hemi designs for World War II aircraft engine use. The fruit of that research appeared under the hoods of 1951 Chrysler Saratoga and New Yorker sedans. Chrysler's first hemi-headed V-8s produced 180 horsepower versus Cadillac's 160 hp and Oldsmobile's 135 hp, lighting the fuse on the original horsepower war.

    DeSoto and Dodge picked up variations on the hemi theme for 1952-58 models. In 1964, when Chrysler needed a hot engine for stock car and drag racing, a second generation V-8 was introduced and a version informally called street hemi was offered to civilian Dodge and Plymouth buyers. My 1968 Hemi Road Runner generated a mighty 425 horsepower and ran over 110 mph in the quarter mile.

    To find out how Chrysler's new 5.7-liter V-8 could be labeled Hemi in spite of the fact its combustion chambers look nothing like sliced grapefruit, I met with Bob Lee, Chrysler's vice president of powertrain product engineering.

    Lee assured me no deception is afoot. The engineers responsible for Chrysler's new engine had better intentions than merely dusting off Hemis in the back of their closet. Early in the research phase, they discovered a combustion chamber that Porsche used for 1965-97 air-cooled 911s offered the ideal starting point for their new design. Porsche's head happened to be a hemi.

    Engineers are not about to leave well enough alone so little from the Porsche design made the long trip to what's now called the 5.7-liter Hemi Magnum V-8. Much of the bowl area of the combustion chamber was filled in to encourage the fuel-air mixture to stir itself prior to ignition. The chamber is shallower than past Hemis so the top of the piston can be nearly flat, thereby saving reciprocating weight. The one vestige from Porsche's classic design is large valves rotated 90 degrees from the most common orientation (in a plane parallel to the crankshaft), and splayed at a 34.5-degree angle in the interests of free breathing.

    The natural course of engineering evolution has moved Chrysler's hero powerplant far from its Porsche roots and severed all ties to the Hemis of yore. Even though it isn't a genuine hemi, this engine still packs a powerful punch as a marketing ploy."
     
  3. Cloverdale

    Cloverdale Full Access Member

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    You left out the title from the Motor Trend article you posted Tom:

    'That thing got a Hemi? No, not really.'
     
  4. Moparisto

    Moparisto Full Access Member

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    I think that the denigration of all things male and American is part of the problem, if not all of it, that motivates corporations to commit suicide over something.

    Turn a Hemi at 3000 RPM and you will also get great fuel mileage.

    Big rigs get 5-6 mpg fully loaded at around 80,000 pounds, hauling a rolling billboard of air drag. They sure don't turn at 5000 RPM.

    They chug along at around 1000-1500 RPM.

    Give away an electrobox tiny electric car with each purchase. Total cost: 5000 bucks. Now you can have any car you want with HALF the fleet/corporate emissions. Suddenly 1700 bucks of "White men like this so we have to penalize this" tax goes away.
     
  5. Moparisto

    Moparisto Full Access Member

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    The Hemi would profit from even flatter included angle on the order of 22 degrees instead of 35 or so. More valve lift without interference on overlap would be one area in which one could profit on the high-performance end. Yes, slightly smaller valves would be needed, and they would hug the cylinder walls more closely on opening, but that it the direction racing cylinder heads have moved in various motorsports.

    No one brings out MORE included angle in their latest iterations. I know the quench areas stimulate violent turbulence near TDC. A contiguous central resultant combustion chamber lends itself to efficient burn.

    With a smaller included angle, they may want valve reliefs of a more aggressive size/nature than they would with the larger, more hemispherical combustion chambers that blown alcohol racers favor.

    The 409 Chevy had close to flat combustion chambers, though not opposed-valve in layout. Modern diesels have NO combustion chamber in the cylinder heads, but their combustion seems designed to take place within the confines of the piston relief for starters.

    Curious if one could make a two-valve head with a much shallower included angle and opposed valves and just replace the Hemi with it, and not have Mopar howling about it.

    If it's possible, I would laugh if Chevrolet or Ford did it. THAT would make for some epic battles in NASCAR!
     
  6. SRT-Tom

    SRT-Tom Well-Known Member Staff Member Super Moderator Article Writer

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  7. SRT-Tom

    SRT-Tom Well-Known Member Staff Member Super Moderator Article Writer

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  8. Moparisto

    Moparisto Full Access Member

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    LOL at the statement of the "conundrum for the muscle car fan" referring to the inline-six.

    Nah, I like my women born female. Others, however, that prefer those made in a surgical theater may really dig the new inline-six.

    Ain't not conundrum, here. I am surprised at how tone-deaf Dodge is to think that the I-6 will cause men to shriek with glee.

    However, as a stupid replacement for the also-stupid V6 they excreted on the public, I can see the reasoning behind the ever-tone-deaf bean counters.

    Here's a better idea: a 3.6L V6 with this technology used in performance cars since the dawn of time, known as individual exhaust ports. Similarly, bucket-and-shim tappet followers so the lid can be taken off of the rev range, so people can put a nice, big, electric turbo on it and have themselves a light little F1-inspired Hellcat-whipper that also has AWD.

    If the product planners at Dodge would just quit braying and shrieking so loud with their heads stuffed so far up their own butts about how great their idea are, and listened to their actual customers, they might find an entire market they are utterly ignoring.

    Inline engines are for Japanophiles, Krautophiles, big rigs, and old Ford pickup trucks.

    They aggressively work at forgetting who their primary market is, and it ain't Tokyo, Berlin, or wherever fans of the I-6 hold parades in their own honor.

    On the plus side, they haven't decided to suck a shotgun and kill the greatest American V8 engine of all time. I was really wondering when I was going to be observing them spraying the entire top half of their heads off onto the ceiling.

    It would have been like a corporate version of Jackson Pollock.

    This is your brain on actually looking at the big picture
    [​IMG]
    (man on a charger.)

    And this is your brain on Corporate Bean Counters, Greta Thunberg, and Anyone Matters Except Our Customers:
    [​IMG]



    Evidently, people who were not raised in some test tube in a sterile lab full of white-blooded technicians in smocks talked some sense into them.
     
    Last edited: Jul 29, 2022
  9. Moparisto

    Moparisto Full Access Member

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    Honda captured an entire generation of future buyers by investing heavily in back channel promotion of its USED cars that were USED IN THE NOT NEW SENSE, for modification and turbocharging and other stuff.
    Go to this page and notice something:
    ALMOST ALL THE CARS HAVE TWO DOORS, TWO DOORS IN THE NOT HAVING FOUR DOORS SENSE.
    https://www.google.com/search?q=mod...NHBagQ_AUoAXoECAEQAw&biw=1512&bih=746&dpr=2.5
    [​IMG]
    While Honda and other Japanese makers were heavily, if not publicly, boosting things like Hot Import Nights, Tila Tequila, Sport Compact Car Magazine, DSport Magazine, etc, and making upgrading an anemic Honda COOL, The American makers were all putting a funnel down each other's throats to they could all mutually commit suicide by pouring in gallons of grape Flavor Aid.

    America lost the propaganda war in the 1990's and 2000's.

    The American makers were busy all sucking shotguns while this complete and utter domination of the youth of America by foreign companies happened.

    Ignore the used performance market AGAIN at your own peril, Dodge. Quit being worried that a used-Mopar buyer may be able to spend enough time and effort and money to put together a V6 car that can challenge and/or beat a Hellcat, your precious vaunted performance profit-milker whose buttocks you are spending so much effort osculating.

    What you do when you cater to the aftermarket and make cars that can be successfully hopped up BY THE SECOND OR THIRD OF FOURTH OWNERS is you CREATE A CAR PERFORMANCE CULTURE THAT IS CENTERED ON YOUR BRAND, and you earn future generations of Moparisti, whose First Hot Rod was a Mopar, First Fast Ride was in a Mopar, who KNEW someone who had a hot Mopar, and knew young friends who souped-up V6's with lots of hard work and dedication to being able to challenge the guys with Big Wallets.

    By strictly catering to ONLY the buyers of new cars, you utterly ignore how Ford took over back in the 1940's-1960's, and how Honda took over in the 1990's-2000's.

    WAY back in the day, if you wanted a fast, used hot rod, you ONLY thought of FORD.

    Mopar needs to tap into the aftermarket to get the next generation of people to have fond memories of the light, fast, cheap car that ol' so-and-so had that was fun as a bag of laughs, and FAST for its level of expense.

    Quit running away from the secondhand performance market and intentionally engineering your cars to SUCK AND SUCK REALLY HARD by being intentionally crippled in the design phase if they are not a V8, like the present "Some moron who should have been in a padded room in a straitjacket-designed" V6. If Dodge made a NEW V6 that had any performance future, I would have bought a brand spanking new one right off the showroom floor. As it is, I was stuck with a multiple-user-owned-already Hellcat instead.

    So, you just blew one, no, more likely, MANY new sales, by being a bunch of short-sighted IDIOTS. How much money did you make off of that Hellcat after it passed through God knows how many people's hands? HERE'S A HINT: LESS THAN YOU WOULD HAVE IF YOU MADE A V6 ENGINE THAT HAD A PERFORMANCE FUTURE.

    You have to realize, that not everyone who buys cars is as violently retarded as you evidently think all Americans are. Some of us have been involved in this industry for DECADES, and we know what it takes to build something Ford and GM seem to have absolutely FORSAKEN: BRAND LOYALTY.

    All you are doing by doing that is destroying your future market. You aren't osculating the buttocks of your V8 buyers as effectively as you think you are. Most of them are going to be DEAD in around 10-25 years. What have you done to build excitement in the NEXT generation?

    Quit running your company by quarterly profit reports and start doing like Honda did: Run it by ten-year market-share goals, not "did we make maximum profits, even if we had to engage in human trafficking or sell a factory this week?" You know, like the Home Depot CEO who, in collusion with his partners on the board, sucked around 250 million dollars out of Home Depot by drastically slashing their maintenance program, and torpedoing the company. He left with about a 250 million dollar exit package. He also almost destroyed Home Depot. Why a hit team didn't end him as he dipped offshore in Cancun or wherever after that is far beyond me.

    You know what most of the effort and time was spent on after the muscle car era was first murdered by those who hate American masculinity? It sure wasn't spent on big blocks, but on Small blocks.

    Not Boss 429's, SOHC 427's, Hemis, or big block Chevrolets. The V6 has the potential to be treated by people in the same manner as the old second-tier-sized engine had, if you don't screw it up.

    If you insist on the I-6 then you better keep your face out of the pile of dope on the table, like Jack Black in Tropic Thunder, and make the V6 sturdy and WITH INDIVIDUAL EXHAUST PORTS, so it can handle around 1200hp when modified. I can come and show you how to do it, Dodge. But it would involve admitting you don't know it all, which should be easy after your failure with the execrable "Dart" your abandonment of an entire generation of future buyers with the four-door Neon and "Dart," etc.

    For the few people connected with Mopar who might be on these forums: This ain't a forum owned by the child sex traffickers at Vertical Scope. This is somewhere people can actually say something that isn't fawning on Mopar no matter how many products, factories, brands, or people they murder.

    And what Mopar needs is people with a vision for a future anyone who is sane actually wants, not a company that caters to the bleating shriekers who have never once bought a Dodge in their entire lives, and shriek with fear and gibber in the corner in a puddle of their own piss at the mention of the term "muscle car."

    America ain't Europe and will NEVER be. America was founded ON rejecting the pathetic slavery that was Europe. However, Europeans seem to ADORE being lorded over, such as the English SUBJECTS, not citizens, and the other ones who all seem to clamor for more governmental CONTROL.

    But not every male in the USA has been emasculated, yet. Just the politicians and their minions. Suck it up, Eurocup.

    Illustration to demonstrate America versus Europe, with the word, "Football."

    American fooball:


    European football:


    Lawrence Taylor, and literally no European "footballer" EVER, said that the only way he would EVER get taken off a field is if he was so injured he couldn't even WALK.



    For a fairly accurate representation of his attitude, watch the movie Any Given Sunday, unless it is banned in Europe for Offending Sensitive Viewers because it was not Sensitive Enough of The Sensitivity of Europeans.


    The USA is not Europe and will NEVER be Europe. The USA will be a better place to be in the middle of a nuclear war than Europe is right now.

    Keep that in mind, Cappuccino-sippers. You are not SELLING to Dainty Snuggles McTightpants of the Football Flop Academy Awards.

    American men are legally allowed to actually be MASCULINE, something you have never even experienced in person, while you were raised in your private schools in Switzerland.

    If you think the average movie produced by the American-hating child rapists in Hollywood who harbored Jeffrey Epstein, Ghislaine Maxwell, and Harvey Epstein for so many decades has even a vague approximation of what it is to be male in America, you are high on your own lies. Quick take another hit of the Falsehood Bong!

    When people think of the term "masculine," literally one of the LAST places on Earth that comes to mind is Europe. It might profit you to get rid of the effete, elitist mentality that states right out loud that everyone who doesn't obey your climate dictators and your vaccination dictators is somehow not as Good As You.

    Don't worry, Europeans, we don't assume you are all child-diddling elitist snobs with really fragile wrists. We would appreciate it if you don't assume that everyone from over here has an IQ less than double yours.


    NASCAR is NOT the USA. Buyers of Mopars are not all tobacco-chomping KKK members who eagerly await the next chance to shoot some little woodland animals. It may comfort you in your place of slavery to your ever-more-controlling government to assume that everyone who is freer than you and got that way because their ancestors had a habit of shooting the Revenue Agents of its former monarch is somehow flawed.

    YOUR ancestors chose to stay in Europe. That doesn't make Americans bad because THEIR ancestors decided to be free or die. When Euros become your biggest purchasers of Mopars, which will be a few weeks after NEVER, then turning them into another little wimpmobile like the Fiat 500 may be called for.

    This is MOPAR, baby, and Mopar people ain't LIKE other people, even most other buyers of American cars.
    [​IMG]
    You could always form a separate division for boring, soulless econoboxes, but don't alienate your core, lifelong loyal Moparisti. I knew the word Hemi at a younger age than you even learned you could get surgery to change you to a human or whatever they teach in school over there.
     
    Last edited: Jul 29, 2022