3,75 running great
AO Car Of The Year Winner 2015
Join Date: Dec 2003
This is just guessing and may be stupid because I have no idea how are the plugs on Smart located, but in case they are in opposite sides of the cylinder and only one fires, the burning process is starting only on one side of the combustion chamber and spreading to the other side. This can lead to uneven pressure build up as the gases don’t press on the piston vertically as with one plug in the center but more on the side that is first ignited and this can force the piston to cross in the bore and wear the cylinder unevenly. Might not be very realistic considering the small bore of the Smart, but the pressure of the turbo multiplies the forces on the piston and if they are not even….
147GTA,Grigio Metallico,Imola leather,3.75l conversion,ported heads,F575 TB,Carbon plenum,Stainless manifolds,EQ pipes,Supersprint silenced cat back,18" GT multispokes,KW V3,Galfer 6pot 355mm,Brembo sport rear
147 1.6TS, Nerro,Beige Interior,Galfer Extreme Brake kit,2,0TS intake manifold,Custom ex. manifold,200CPI cat,Supersprint silenced center + OO backbox,GTA spoiler,GTA side skirts,GTA headlights,Blaupunkt LA MP74 + Focal + MacAudio + Dynamat + HERZ subwoofer