If Displacement is so great why did you buy a 1.8t and not a 2.8? LOL we all know why, because the 2.8 cant make any real power and even with a SC it gets spanked by a 1.8t with a simple bolt on turbo.

 

Lol i know what you are saying. Im not saying that the 1.8 is worse, just my initial statement, No replacement for displacement is true. the 2.8 can make real power, more than the 1.8. its just harder because of the way the engine, engine bay, and car are setup. I am not saying bigger is better in all applications, just as far as power goes, bigger means more power. Period.

 

Honestly guys the replacement for displacement saying comes from the feel of the engine. A big *** V8 torque monster will feel nothing like a high HP turbo 4cylinder. It's just opinion.... If you do things in proportion like if you have a 1 liter engine w/ a turbo vs a 5l engine w/ a turbo that pushes 5x more air you will probably make an = percent more hp and the 1l engine will make less power its just how it works.

 

Let me know when the 2.8 makes this.

My little S4 spanking A4 1.8t

 

What you say is valid, but it is also hypothetical. In the real world, efficiency and scale are important factors.

The truth is that 'all things equal, bigger means more power.' But all things equal implies much more than just bigger cylinders. For instance, larger diameter pistons encounter more friction -> more heat etc.

 

Yeah, i realize this. But at the same time smaller engine does higher Rev's, making more heat from friction. I was just simply defending the reasons for larger engines.

 

These days V8's rev just as high as our little 1.8t's. Its not like any of us 1.8t owners are revving our motors to 10k-11k rpm like the EVO's are doing to make over 1000whp.

I would still take a small 4 cylinder over a V8 any day and thats because its not hard to make 800chp and still get 30 mpg on the fwy.

 

In general. Yeah, but 800chp in a small engine puts wayy more stress on the internal components than on a larger one.

 

I know the little engines make power now a days, and normally the people that argue the "no replacement for displacement" are the people that have smaller engines.
Simple fact is that an engine is only an air pump, and a larger engine works less to move air.
Back when I was in my 20's, 4 cylinders were junk that did not last over 120K.

 

Well not completely, the V8's have way more weight being spun which means there is plenty of stress being put on them too. This is why most of the old V8's would only rev to about 5-6k rpm. Thats like revving a 4 cylinder to 10k-12k which none of us actually do yet. That is also why the gearing on a V8 is setup so that at fwy speeds the RPM is around 2k vs 4k for our 4 cylinders. So the 4 cylinder is spinning half the mass.


Let me know when you can fit a 800chp V8 setup in the A4 without the rear end coming up off the ground.

BTW pick up the Sport Compact Car issue of last years USCC. You will find a Audi Coupe with a V8 in the engine bay, then tell us how it did against a few inline 4 cylinder cars. Make sure to read all of it, you might then notice I am actually in that article beating all of the other cars at the drag race part of the event while driving a 4 cylinder turbo AWD car

Here is a little tease for you.