auntblabby wrote:
is [the late] smokey yunick one of your heroes? just curious.
Yes, absolute genius. When a rule was made that he and other drivers had to run a smaller fuel tank he just used a ridiculous amount of fuel line. That's just plain awesome.
another_1 wrote:
Fuel economy for domestics is not anywhere near as bad as some think. Can't say I'm up to speed on the latest ones, but the previous generation Camaros/Ta's, with the LS1 motor, regularly pulled low 13's, some 12's, off the dealer floor - while also getting 30 or more MPG.
As far as turbo lag is concerned, why not a Whipple supercharger to give the low rpm boost, and a turbo for higher rpms? You also comment on turbos being inefficient. I'm not sure I entirely agree with this - although I may not be looking at "efficiency" the same way you are.
You might want to look into turbodiesels
I've lived on a farm, my dad is a farmer so I know my way around turbodiesels but they aren't my thing. Usually heavy as heck. You can get as much horsepower out of a 300lb gas engine as you can a 1000lb diesel. Not to mention that all small diesels these days are pretty much VWs, again not my thing - though I wouldn't mind a brand new Scirocco.
Multiple compressors (heck even one compressor) complicates an engine. Simplicity equals joy. I've actually heard a racing statistic recently I forget from where but apparently forced inducted engines are 3x more likely to breakdown or something. Not to mention all the extra weight of the plumbing, etc. Turbos are great, twin screw supers are good but there is no reason to use one if you can make your power goals NA. As far as me talking about efficiency goes running a low compression ratio kills fuel economy, stepping into boost means you have to pull timing and dump extra fuel to prevent detonation. Turbos are better for drag racing actually, road racing would involve a lot of use of the blowoff valve. Drag racing you can use anti-lag and WOT shifting or well....an automatic.
Domestics can get decent highway mileage especially in the case of anything with an LSx or the brand new Mustangs. City mileage however is not that great, city mileage prefers a lightweight chassis minimum reciprocating weight, etc. The Nissan 350Z is the best example I can think of for comparison against these cars. 3.5L V6 makes 280hp off the showroom floor, rated for 20/24mpg (versus Corvette's rated 16/26) or a little better depending on the year but plenty of people manage to get low 30s if they are trying hard. Coincidentally, the G35 coupe has the same engine and has one of the lowest drag coefficient I've ever seen on a "fun" car at .26. This of course will help with gas mileage as well as top speed. The VQ35 has the best flowing heads that I've ever seen on a car that wasn't a 4 banger honda. I also hate the sound of a V8 with a passion. Power potential for a VQ NA is over 400hp, I've even heard claims of 500hp.