Because they are sooooo cool!!!
ok...
let's see,
lets go on to something bigger than turbos, but it works on the SAME prinicple but the difference is, it doesnt ASSIST, it is instead, IT IS!!...
so how we do that?
first of all
remove the exhause pipe to compressor, because we want FRESH AIR not spent hot gasesous waste
get rid of Conrods why? its a waste of energy all it does, its convert circular motion into linear motion and back...
complicated and heavy castings that has lots of BIG ROUND holes are jsut too damn heavy and has own tiny rooms for exploding soon-to-be hot gasous heat that is going to be sources of Motive Energy.
This part is called cylinder and head, let gets rid of it , shall we?
add a much much higher potential fuel source for igniting flames, and ensure its much much lighter too (to carry in tanks - so the power to weight ratio is much higher too) and also the flash point is much much lower...how we do that?
chuck petrol away, use AVGAS or Jet fuel instead....
now, similar to Conrods, the cranks is a waste of energy, its HEAVY (of course to withstand the brute linear forces coming from its translation from the other side of the Conrod), it only could have been a much much better set of blades, rather than some chucks of steel rods all in the wrong place...
now make the Engine case more simple, ROUND and LONG, not some weird V shape with tiny holes and a maze for tiny gobs of air... just make it ONE BIG MOTHERFUCKING BIG HOLE!!!
so
ta -da
cram all in the blade where the crankshaft was, into the big long case with ONE bug hole...it has more injectors than 8 , more like 20 but thats fine, because its a BIG HOLE and really needs it
Its called
JET ENGINE !!
USE that in your car...
its the ultimate Turbo
its work the same way BUT
its is also an ENGINE
it compresses, SPINS...REVs VerY HIgH and SPITs ouT LOTS of heat, AND THRUST!!!!
the thrusts isnt wasted on cranks..just on the other side, AIR!~~~ but this time, a million times HOTTER ,
so the Newtonion's law of action and reaction gives you a ride, so much heat=thrust you'd be slammed so hard in your seat, seeing the horizon flatten and lampposts are just picket fences in blurs...!!
YEEE HAAAAWWW!!!