Whats the biggest twins you would be willing to drive on the street.

Alright then can we go the other direction and use monster turbos with tiny exhaust and gate both of them. Instant spool and alot of air?
 
sinfulcoin said:
Alright then can we go the other direction and use monster turbos with tiny exhaust and gate both of them. Instant spool and alot of air?
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Monster compressors need monster exhaust turbine wheels to create the necessary "shaft HP" to move and compress monster amounts of air. No matter how tight you make the exhaust housing, you still have an 80 to 100+mm heavy steel turbine wheel to spin upwards of 25K rpm before you start pushing lots of air.

Big chargers don't spin 144K rpm like the smaller ones do but they are much heavy so they spool slow with 359 cubic inches breathing on them.
 
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