Your car's sense of humor is tiny



  • @CoyneTheDup said:

    I make his head to have a cranial volume of, approximately, a whopping 4000 cc. What about it?

    Depending on model, that could be 150 - 250 horsepower.


  • sockdevs

    @mott555 said:

    Depending on model, that could be 150 - 250 horsepower.

    That little? Us Europeans can get 500hp+ out of 4000cc!



  • :shrug: I'm used to pickups. My old 4.3L Chevy only had 150 horsepower.



  • @RaceProUK said:

    That little? Us Europeans can get 500hp+ out of 4000cc!

    I don't see a turbocharger.


  • sockdevs

    Ferrari got 562hp out of 4500cc without a turbo or a supercharger; that's as near as makes no difference 125hp/l, so 500hp from 4000cc is definitely doable :stuck_out_tongue:



  • Which car?


  • sockdevs

    458 Italia. They also did a Speciale version with 600hp, also from a natrually-aspirated 4.5l V8 :stuck_out_tongue:



  • @mott555 said:

    I'm used to pickups. My old 4.3L Chevy only had 150 horsepower.

    100hp per liter is considered "pretty good" for a normally aspirated engine. I expect at least 125 from a turbo in a reasonably priced car with a long warranty (think WRX STi or Focus ST), up to about 175 at the high end. Aftermarket tuned engines can make as much as 300.


  • sockdevs

    Racing engines go even further; the current crop of F1 engines are 420+hp/l.



  • That's nice, get the fuck out of this thread.


  • sockdevs

    No


  • Grade A Premium Asshole

    @blakeyrat said:

    That's nice, get the fuck out of this thread.

    Is this your thread?

    No?

    Then stfu.



  • It was before the Jeffing.


  • Grade A Premium Asshole

    My opinion still stands. ;)



  • Does this topic actually have a topic? This conversation seems strangely familar to me...


  • sockdevs

    it appears to have been unceremoniouly jeffed because we dared to get slightly off topic in one of blakey's topic and the mods were forced to do their jobs..... or something like that.....



  • I see...



  • @RaceProUK said:

    Ferrari got 562hp out of 4500cc without a turbo or a supercharger; that's as near as makes no difference 125hp/l, so 500hp from 4000cc is definitely doable

    @Jaime said:

    100hp per liter is considered "pretty good" for a normally aspirated engine. I expect at least 125 from a turbo in a reasonably priced car with a long warranty (think WRX STi or Focus ST), up to about 175 at the high end. Aftermarket tuned engines can make as much as 300.

    Let's not turn this into a HP/liter flamewar*.


    *HP/weight of engine and HP/physical volume of engine are much better metrics.
    **There is no replacement for displacement.


  • BINNED

    I have about 100hp from my 600cc engine



  • @accalia said:

    unceremoniouly jeffed

    Sorry, it's a bit more ceremonious this morning. I edited the "I Jeff'd" message in the original thread.



  • @Groaner said:

    *HP/weight of engine and HP/physical volume of engine are much better metrics.

    My Hayabusa engine made 250 at the crank and I could carry the engine/transmission combo. With a turbo, they can easily reach 3hp per pound and 350 per liter.



  • @RaceProUK said:

    Racing engines go even further; the current crop of F1 engines are 420+hp/l.

    I'd love to get 420hp/l out of my 6.6L Duramax. It might almost even be worthy of truck nutz then.



  • @mott555 said:

    I'd love to get 420hp/l out of my 6.6L Duramax

    No problem. Here's 1200.



  • @Jaime said:

    My Hayabusa engine made 250 at the crank and I could carry the engine/transmission combo. With a turbo, they can easily reach 3hp per pound and 350 per liter.

    Motorcycle engines have ridiculously high redlines.

    If my engine kept its peak torque to 10k RPM, it would make over 780 HP at the crank and 127HP/liter.



  • @Groaner said:

    Motorcycle engines have ridiculously high redlines.

    There's no reason it couldn't be scaled up. A 12 cylinder 4.2L engine could be made with identical geometry and it should make 750HP and redline at 11K rpm. The only reason car engines typically redline lower is that manufacturers decide to go with longer strokes and smaller bores.



  • @Jaime said:

    There's no reason it couldn't be scaled up. A 12 cylinder 4.2L engine could be made with identical geometry and it should make 750HP and redline at 11K rpm. The only reason car engines typically redline lower is that manufacturers decide to go with longer strokes and smaller bores.

    At that rate, you might as well just grab a PT6 -- the idea of a reciprocating engine that size with an 11k RPM redline is terrifying in terms of what'd happen if a conrod or such ever failed...



  • @tarunik said:

    At that rate, you might as well just grab a PT6 -- the idea of a reciprocating engine that size with an 11k RPM redline is terrifying in terms of what'd happen if a conrod or such ever failed...

    Just make sure they're made of something lightweight and strong, like, oh, forged titanium.

    Peak output is 505 hp (377 kW) at 6300 rpm and 470 lb·ft (640 N·m) at 4800 rpm with a 7100 rpm redline During GM's reliability testing of this engine in its prototype phase, the LS7 was remarked to have been repeatedly tested to be 8000 rpm capable, although power was not recorded at that rpm level, due to the constraints of the camshaft's hydraulic lifters and the intake manifold ability to flow required air at that engine speed.

    If one can approach an 8k redline with a 7.0L V8, imagine what could be done with a V10 or V12 of similar displacement.


  • sockdevs

    F1 had 3-litre V10s revving to 20,000rpm at one point ;)



  • @tarunik said:

    At that rate, you might as well just grab a PT6 -- the idea of a reciprocating engine that size with an 11k RPM redline is terrifying in terms of what'd happen if a conrod or such ever failed...

    The Ferrari LaFerrari has a V12 that revs pretty close to 10K with a 75.2mm stroke, that gives it a ten percent higher piston speed than my hypothetical V12 and puts it at the upper end of what really good forged rods can handle - just under 5000fpm. My Hayabusa and the V12 I described are both at a pretty reasonable 4600fpm.

    @RaceProUK said:

    F1 had 3-litre V10s revving to 20,000rpm at one point

    They had really short strokes and typically stayed under 5000fpm piston speed. The big problem at that rpm is getting the valves to close quickly enough.

    .


  • sockdevs

    @Jaime said:

    The big problem at that rpm is getting the valves to close quickly enough.

    They solved that by switching to pneumatic springs, IIRC


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