how much hp/liter should an engine be making to not be considered high strung and stressed?

how much hp/liter should an engine be making to not be considered high strung and stressed?

my engine is currently making 70hp / liter NA. Will this be realiable long term or is it too high?

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  1. 2 months ago
    Anonymous

    That’s reasonable, equivalent to an average 420HP V8.

  2. 2 months ago
    Anonymous

    I'm making 54hp/L in one and 42hp/L In another. Both know to be among the most reliable vehicles in the world.
    I would say anywhere from 50 to 70 is acceptable

  3. 2 months ago
    Anonymous

    I'm not going into it, but hp/l is not a measure of stresses inside an engine.

    • 2 months ago
      Anonymous

      chamber pressure ∝ torque/piston area ∝ horsepower/piston area

      • 2 months ago
        Anonymous

        chamber pressure/CR =/= horsepower.
        By that reasoning, diesels must die immediately because they're super stressed.
        No, airflow matters. You can have a shit engine with a high CR that makes shit power and can die quickly.
        Also, other small shit fails causing large shit to fail.
        Bad pcv system? Guess you're gonna run out of oil, regardless of valvetrain and bottom end design.
        Thanks for attending my dog breeding awareness seminar.

        • 2 months ago
          Anonymous

          >chamber pressure/CR =/= horsepower.
          i never said they were, queer. All else equal they're proportional
          >By that reasoning, diesels must die immediately because they're super stressed.
          You're right, diesels MUST DIE.

    • 2 months ago
      Anonymous

      it literally is tho?

      thats why crown vics last forever despite being ford shit. Becuase they make like 30hp/l

  4. 2 months ago
    Anonymous

    I think 80hp/l is reasonable for an i4

  5. 2 months ago
    Anonymous

    about 200hp/l is normal

  6. 2 months ago
    Anonymous

    HP/L isn't a good ratio to look at.
    Look at gearing, timing, and compression ratio, will give you a better idea of how high strung or stressed it actually is. Naturally aspired and bigger displacement motors at low revs will last forever. Driving conditions are also a massive factor regardless of car, is it hot? Cold? Stoplight city traffic? Freeway at speeds faster than everyone else? On the track doing time attacks?

  7. 2 months ago
    Anonymous

    My NA Toyota does 88/L and I don't think they'd let many cars leave R&D overstressed.

  8. 2 months ago
    Anonymous

    >Will this be realiable long term or is it too high?
    idk, do you beat the shit out of it and never change the oil?

  9. 2 months ago
    Anonymous

    Anything less than 100hp/l is slowgay cope

    • 2 months ago
      Anonymous

      name 5 NA engines that make over 100hp/L

      • 2 months ago
        Anonymous

        Honda K20A, K20A2, K20Z1, K20Z4, F20C
        Wow that was really hard, real exotic stuff.

        • 2 months ago
          Anonymous

          Anything less than 100hp/l is slowgay cope

          displacelet cope

          • 2 months ago
            Anonymous

            13 second hell cope

          • 2 months ago
            Anonymous
        • 2 months ago
          Anonymous

          Also B16A, B16B and the Toyota 2ZZ-GE

        • 2 months ago
          Anonymous

          Also B16A, B16B and the Toyota 2ZZ-GE

          Notice how none of the engines you just listed are break out of the 200hp range? This is why HP/L is stupid to argue about. It's just weeb cope about them making less hp than a contemporary V8 and a fraction of the torque.
          >hurr muh 100-200hp and no torque
          >b-b-b-but it's the hp per liter bro

          • 2 months ago
            Anonymous

            Alright then Ferrari F136 and F140, Porsche MA2.75 and M18.00,the Caterham and the Montune Racing Duratec, Cosworth RA and GMA, and the Ariel V8
            You may now return to your scheduled slowgay cope

          • 2 months ago
            Anonymous

            So now the pithy little comment

            Honda K20A, K20A2, K20Z1, K20Z4, F20C
            Wow that was really hard, real exotic stuff.

            >Wow that was really hard, real exotic stuff.
            is meaningless? Why are jap engines so weak? Why are Euro engines that are worth owning so expensive? Because you drank the HP/L kool aid?

          • 2 months ago
            Anonymous

            >M-MUH ENGINES NEVER PASS 200hp
            >post engines who clearly pass way over 200hp
            >M-MUH EXOTIC
            Calm down pal, one day I know you'll be able to afford the ultra rare and exotic Ford Duratec

          • 2 months ago
            Anonymous

            >k20 - 197hp-220hp
            >f20 - 240hp

            Also B16A, B16B and the Toyota 2ZZ-GE

            >B16a - 160hp
            >B16b - 180hp
            >2zz - 170-180hp(NA)
            So which one of those broke out of the 200s moron?

          • 2 months ago
            Anonymous

            >f20 - 240hp
            >NONE OF THESE ENGINES PASS 200HP
            My god you don't have a single IQ point over 60, which explains your cope

          • 2 months ago
            Anonymous

            >>NONE OF THESE ENGINES PASS 200HP
            You can't read.

            [...]
            Notice how none of the engines you just listed are break out of the 200hp range? This is why HP/L is stupid to argue about. It's just weeb cope about them making less hp than a contemporary V8 and a fraction of the torque.
            >hurr muh 100-200hp and no torque
            >b-b-b-but it's the hp per liter bro

            >Notice how none of the engines you just listed break out of the 200hp range?
            Not
            >hurr they can't make MORE than 200hp
            Go back to elementary school english ESL.

          • 2 months ago
            Anonymous

            >uhhhh I mean the 200 RANGE
            You put the goalpost back where it was you dumb Black person. Anyways, as I posted here,

            Alright then Ferrari F136 and F140, Porsche MA2.75 and M18.00,the Caterham and the Montune Racing Duratec, Cosworth RA and GMA, and the Ariel V8
            You may now return to your scheduled slowgay cope

            the oh so exotic and rare Ford Duratec

          • 2 months ago
            Anonymous

            Yes, as in sub 300hp like I said in my first post. Your lack of reading comprehension hasn't changed the fact that those shit little rice engines can't break out of the 200s. All of them make less hp than a PI 2V 4.6L from 1999 and half the torque at best, pathetic.
            >muh cossy
            >muh mountune
            Meanwhile the ST200 and 220 were actually sold.

          • 2 months ago
            Anonymous

            Based, society truly peaked with the 4.6L Ford modular. Your opponent is frothing at the mouth and can only repeat the phrase “Ford Duratec” at this point. Which, is still a Ford.

          • 2 months ago
            Anonymous

            Funnily enough, I've owned both 4cy and 6cyl Duratecs. They're good engines, just not as good as a V8.

          • 2 months ago
            Anonymous

            >society truly peaked with the 4.6L Ford modular
            V6 power v8 gas mileage. Coyote was much better. Ti VCT changed ford for the better.
            >inb4 godzilla
            Dumb gay. What car are you putting the 10r140 in? Thats the only ford performance wiring harness.

            https://i.imgur.com/nYavmZF.jpg

            Funnily enough, I've owned both 4cy and 6cyl Duratecs. They're good engines, just not as good as a V8.

            Based duratec bro. For me its the aj30 and 2.0 gdi duratec.

          • 2 months ago
            Anonymous

            >Coyote was much better. Ti VCT changed ford for the better.
            This is akin to comparing the modular to the small block. People forget the low output version of the 302 that only made 150-160hp, the 2V was a big bump in not only power but refinement. Also the H.O. 302 that was rated from 215-240hp depending on the year was overshadowed by the 275-305hp 4V 4.6L. It's almost as times progress, engines get better.

          • 2 months ago
            Anonymous

            Duratec
            >porsche block
            >mazda head
            Yeah im thinking based.

          • 2 months ago
            Anonymous

            105 HP/L NA
            Has been very reliable so far
            Guess the engine

            S54

    • 2 months ago
      Anonymous

      the camaro ss makes like 60hp/l and uses premium gas lel

  10. 2 months ago
    Anonymous

    My 2.7L f150 makes a claimed 320 hp/400 tork but I have never had it over 4k rpm ever in 5 years. I don't think it has ever made more than 200 hp, even when pulling my camper up mountains

    Why are you kids so stupid?

    I know you have to spin up your Honda but you don't have to rev up modern engines

  11. 2 months ago
    Anonymous

    Displacement cope thread? HP/Liter literally fricking means nothing vs power to weight ratio

  12. 2 months ago
    Anonymous

    Holy frick you have no clue what you're talking about.

    Go look up compression ratios moron.

  13. 2 months ago
    Anonymous

    Air cooled naturally aspirated engines can easily produce 90 hp / liter and be very reliable.
    Passing smog regulations is the real problem.

  14. 2 months ago
    Anonymous

    Patrician Tier 20hp/liter reporting in. 85lb-ft/liter can pull a house from its foundation. Cummins STRONK.

  15. 2 months ago
    Anonymous

    I would say at least a horsepower per cubic inch is the bare minimum, you couldn't get that in the Malaise era.

  16. 2 months ago
    Anonymous

    How much power your engine can handle depends on how well it was designed.

  17. 2 months ago
    Anonymous

    58 hp/l, certainly not high-strung. It was pretty peppy for a 1.3 liter engine back in the mid 80s (and it feels it, it's surprisingly rev happy AND surprisingly torquey) but it's certainly not working hard for it.

  18. 2 months ago
    Anonymous

    If it's NA and doesn't rev past 6-7k it's fine. RPM and boost are the only replacements for displacement and they both ruin engines. There's no set hp/L number because that's an irrelevant thing to measure which is why only benchracers here care about it.

  19. 2 months ago
    Anonymous

    105 HP/L NA
    Has been very reliable so far
    Guess the engine

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