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#1
03-14-2004, 10:25 PM
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charger questions
Will a turbocharger or supercharger raise compression ratios? Out of the two, which one is more economical or affordable.
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The member formerly known as Civic_Slayer 1992 "Robins egg blue" SVX Originally Claret 147k- CURRENT 1992 Pearly 187K and climbing (11-91) #964 *retired 1992 Pearl SVX 122500 miles #86 FASTAR THAN THE OLD ONE.*SOLD  Everytime I get into my car, it always reminds me that it has POWER 
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#2
03-14-2004, 11:13 PM
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Neither change the compression ratio, but it doesn't matter. Both put additional stress on the engine, and if not tuned properly, the additional stress is great enough to cause engine damage. Since there is no street-driven supercharged SVX (that I know of), and there has yet to be a properly done street-driven turbo SVX, no one knows which provides the most performance and reliability per dollar.
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Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads.
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#3
03-14-2004, 11:16 PM
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Nothing external will change your compression ratio. CR is a very simple calculation between the volume of the cylinder at BDC (Bottom dead center) and TDC (Top dead center).
Atmospheric pressure is (about) 14.7psia (Pounds per square inch absolute) at sea level. or 0 PSIG (Gauge) i.e. 1 atmoshpere If you double that with a turbo (14 lb's of boost) in theory you double the HP. as far as economy, you'll need to define the term a little better. drag racing=supercharging Anything else=a turbo is generally a better option. Collins
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