Turbo or supercharge and NA gas engine

noteven wrote:
Turbocharging mimics high compression which = high torque rise at low rpm which = useable power where a street vehicle needs it. Turbochargers can be "mapped" to provide high manifold pressure at low rpm.

Not that familiar with supercharging but doesn't mechanical supercharging add air in a more linear fashion which = more torque at higher rpm therefore more hp at high rpm for example?

But who wants to listen to that all afternoon towing?

No, yes and maybe. :B

Sure you can map compressors where they come in early but then you will choke your hot section down so much it causes bad things to happen. (like high EGT's poor mileage ect)


No, a supercharger is instant. Right at the hit of the throttle. That is why you see them on top fuel cars instead of turbos. I hated superchargers when street racing because it was so easy to smoke the tires. I liked turbos when street racing because they came on so soft it was a lot easier to get them down the road without tire spin.

On a prepped track it was a different story. I loved the supercharger because it was so instant and instant at a low RPM where with a turbo you had to build boost on the line and get the RPM up to make power.

Kris, heat is the biggest enemy of engines. Ford found this out with their Ecoboost.

Bottom line: It's easy to make power but very, very, very hard to control heat in an engine that makes a lot of power.