Hemis

[911GT2]

Originally posted by Polygon
Well, the spark plug is directly in the cylinder, there is also something to do with the valves. I am not saying that Porsche engines aren't impressive, because they are.

There is only one thing about the Hemi which I wish they would change. I wish they would move from pushrods to a DOHC design and they would so much more power, but for some reason they stick with the damn pushrods.

Alright, that's cool. It's just that people were making the hemi to be totally new and amazing, but it's an obvious evolution of the IC engine.

It's been used for years in other cars.

[inferno]

Just because an engine is square or undersquare doesn't mean that it isn't able to produce 100hp/liter. Two perfect examples of that are the RSX Type S and the Celica GTS. The RSX has a square engine, while the GTS has an undersquare engine. This, however, is straying away from the original talk about a true hemispherical combustion chamber. A true hemispherical combustion chamber would need an extremely domed piston to get any decent compression, or a smallish combustion chamber.

[v10_viper]

dquare or undersqueare engines CAN make equal hp/liter but noone bothers to make them do that because they don't HAVE to. the porsche people are working with a decently sized engine and are working as much power as they can from it in order to be faster, hondas and toyotas are extacting 100 hp/liter from a 4 cylinder because if they didn't it wouldnt even run the 15's it does.
they make it oversquare in order to help the engine last, if you dont need 8 & 9000 RPM you can build it better to its range, its cheaper then using higher quality internals.

yeah but thos 8 and 9k engines also dont have much for torque, and you dont get much power till those upper rpms. then your runnin down the highway at 60 mph at like 5-6000 rpm, that's just annoying.

Just because an engine is square or undersquare doesn't mean that it isn't able to produce 100hp/liter.

Did i say that it was impossible? I dont konw if you all caught on to what I was trying to say. I'm not going to explain it either.

[inferno]

Originally posted by v10_viper
yeah but thos 8 and 9k engines also dont have much for torque, and you dont get much power till those upper rpms. then your runnin down the highway at 60 mph at like 5-6000 rpm, that's just annoying.

Sure they don't produce huge torque numbers, but they make very respectable torque numbers for their displacement. Also in terms of powerband, I think you should go find a dynosheet for a stock Type S or a stock Celica GTS.

Did i say that it was impossible? I dont konw if you all caught on to what I was trying to say. I'm not going to explain it either.

When any engine is sqared it most likely wont be 100 hp per liter. they could be with as much technology as we have but i'm kinda doubtin that.

While you didn't say it was impossible, you basically said that it is very unlikely. Those motors are two examples. They also happen to be two of the only motors that are easily attainable that produce 100hp/liter. Please don't get so defensive when responding. You made a post and I responded accordingly disproving what you said in your post. I even gave you an opportunity to prove me wrong by posting stock dyno sheets of the two motors in question. Feel free to do so. Have a nice day.

[v10_viper]

Originally posted by inferno


While you didn't say it was impossible, you basically said that it is very unlikely. Those motors are two examples. They also happen to be two of the only motors that are easily attainable that produce 100hp/liter. Please don't get so defensive when responding. You made a post and I responded accordingly disproving what you said in your post. I even gave you an opportunity to prove me wrong by posting stock dyno sheets of the two motors in question. Feel free to do so. Have a nice day.

Yea, about that I'd like to apologize, wasn't quite in the best of mood at the time and when I read that I guess I overreacted, so again, sorry. And thank you for proving me wrong, I guess when it comes to 4 cylinders I dont really care, nor do I know that much. I know with those engines they can alter the cams and Honda's VTEC and such but I guess 4 cylinders such as Honda's and Toyota's aren't that impressive to me.

But can I ask, are those Celica's or Type S's engine's square? because if they are than great, impressive. I guess I was trying to say that Most squared engines out there are prob around 1 hp/ci or maybe better but not quite 100hp/litre. sorry if I stated in the wrong way.

[inferno]

The Type S motor is square. In terms of the 4 cylinders not being important or impressive to you, that is fine. Everyone is entitled to their opinion and choice of motor to build.

[v10_viper]

The Type S motor is square.

Quite impressive then, cool.

In terms of the 4 cylinders not being important or impressive to you, that is fine. Everyone is entitled to their opinion and choice of motor to build.

They are important, is there any way your gonna get 30 mpg with a 454?? no way. and some are impressive to me, as i stated with the Type S engine. Polygon's Lebaron impresses me as well, as with the Neon SRT-4's and some other Neon's. I dunno, I think I contradicted myself with what I said in the before posts. I still like big V-8's and so on

[Neutrino]

To be in the middle:

I love 4 bangers cuz they are so gas economical but the only way to get V8 power out of them is forced induction-Go Turbo -

But i have commed to respect V8's like the hemi's their power and torque are insane even NA. And their torque curve is unmached.And is you combine that with lets say a TT setup----well you know the rest But on the downside major gas guzlers