Originally Posted by LEE427
Seeing a couple of rumors about the next Z turboed sucks.Man I hope they keep it naturally aspirated..
You can only get so much power from an N/A motor before it becomes impractical to make due to reliability and cost of parts. Forced Induction is safer, cheaper, and more practical than sticking with the old "no replacement for displacement" argument.
Originally Posted by jkcam6017
What do you think is the downside to the new generation of turbo motors?
Weight and heat are the big issues with turbo systems. I personally think a twin turbo setup on the LT1 platform will be the best route...especially since they can still run displacement on demand with a turbo, whereas a supercharger would likely cause issues.
Some upsides to turbo systems is that you can mount the turbo's low in the chassis, so the added weight is closer to or below the car's center of gravity. There are also some turbo systems that are rear mounted on front engine cars...although they tend to have quite noticeable lag so the best mounting location is right by the exhaust ports on the head for reduced lag.
Current turbo cars have little to no noticeable lag so the old wives tales of monster lag are just that. There are also ceramic coatings that should be used on the hot side housings that reduce radiant heat to help manage underhood heat, and like my current turbo setup in my FR-S you can use thermal blankets made of kevlar and other insulators to further reduce that heat.
Of course there is the complexity of a turbo system that can be a drawback, but it's actually a pretty simple to understand system once you get your hands into one.