You do raise an interesting point. If I can find more information, I believe that Ford especially is using their Ecoboost technology in everything. I'm pretty sure their twin turbo 3.5 V6 puts out more power than their equally popular Coyote 5.0. Again don't quote me, but do you understand my point?

I think to have the bulk of production 4-cylinder ( with FI) then a higher level V6 is a good base. Then satisfy enthusiasts with a lower production V8. Offer a higher level option FI V8 or bigger N/A car, and then finally a halo car.

I completely agree with you that certain engines should reside in specific cars but I think we and a lot of enthusiasts will lose out to manufacturers.

 

Like I said, I haven't driven any of the cars we're talking about, but turbo lag is the killer IMO. For a given power level a light N/A engine will probably be more fun to drive than a turbocharged engine with the same power. This especially applies to small 4 cylinder engines with big turbos. It seems like every time I read about or watch a test of a high powered production car with a turbo charged 4 cylinder turbo lag is a buzz kill. I know there are a lot of people here with that exact combination in their cars, but my opinion stands. I'm talking about practical setups here, not 400HP+ 1.8L's.

Also, I haven't seen enough weight numbers for newer engines. I think I've seen the Coyote alone to be only 430lbs or somwhere around there. I find it hard to believe a twin turbo 3.5L is substantially lighter than that.

The 3.5L EcoBoost claims 340HP/340ft-lbs. The '11 Mustang GT is rated at 412HP. The '12 Boss 302 is upped to 444HP, last I knew.

 

This is all good stuff
I like the fact of not having a turbo, NA is the way to go, plus they can make power with v8's and still get the milegae needed to make the cars practical. Also the light, better thing look at the Ls1 Alumn, weight is low and power is high. I hate lag aswell and am partially against a turbo car but with a built bottom end it makes it pracical, slapping a huge turbo on and waiting 2 second to hit the power is just dumb. I watched a top gear the other day about some Honda that has an onboard generator i think it was the Fcrew? the gas cussumption can easily go down in cars its weather or not the manufacterer wants to put up the money for RandD.

The mustang thing i actually have tested the GT and the Rouch and talked in depth with the dealer because thats my girls car she is planning on getting. He says the 30mpg is one of the biggest overstatements in the world. I can tell my drving the roush aswell if you can gte 30mpg or even 25 id be amazed. but good **** hold on when you hit the gas on those cars.

 

No way a Roush tuned Mustang can get 30MPG, for sure. That's just the rating the 6spd GT got. It all depends on how you drive it. The ratings are pretty subjective.

Just found this: http://mustangs.about.com/od/modelye...boost-ford.htm

It shows the EcoBoost weighs about the same as the Coyote 5.0L.

 

wow thats nice stuff lol i tell ym girl tho the point of a mustang is the big engine for mainly its preformance and sound, she literrally laughs at V6 mustangs XD

 

Pardon my ignorance of turbo vehicles, but could a manufacturer not build a twin turbo where a smaller turbo spools quicker until the bigger turbo can kick in? What about twin charging (as in supercharge and turbocharge)?

 

Thats what i would htink, ive seen a few build with such things done? it doesnt make sense tho seems like they would have to both work in sync because youd be stressing one cylinder bank more than the other? In theory tho

 

Sequential turbos, like on the FD RX-7 or the newer Ford Diesels, have a smaller turbo for down low and then switches to a larger turbo once it spools. From what I've read in the past they're not more widely used because they're really complex and tend to have more issues.
http://en.wikipedia.org/wiki/Twin-tu...uential_turbos

 

Was about to mention the FD. I had an N/A FC, but always longed for an FD (still do.)

Variable geometry turbos overcome a lot of the complexity of sequential turbos (though they are more complicated in and of themselves.)

 

A5 aren't all coupe. the sportback is a 4 door. i think the new RS4 should have at least 500 hp and 400tq with a torque split like the R8. i don't care how they do it. just effing do it lol.

obnoxiousdrunk: they sure can but it won't help because the smaller turbo has a lower effective compressor speed. if the effective compressor speed is exceeded, it'll actually hurt the performance because it'll be slowing down the air.