how is it that the overseas spec 1st gen legacy turbo puts out just over 200 hp stock? Its only a 2 liter engine also. Is the turbo that much bigger? Cause stock it only runs 10 psi. Whereas our US/Canadian spec have the 2.2 and run 9 pounds and only have 160 hp . Mmmm, anyone know how?
Thanks,
Mark
1991 Turbo Sedan, Aspen White 5MT, Sold RIP
1994 Turbo Sedan, Crimson Pearl 5MT, from British Columbia-no rust!
LegacyT wrote:how is it that the overseas spec 1st gen legacy turbo puts out just over 200 hp stock? Its only a 2 liter engine also. Is the turbo that much bigger? Cause stock it only runs 10 psi. Whereas our US/Canadian spec have the 2.2 and run 9 pounds and only have 160 hp . Mmmm, anyone know how?
Thanks,
Mark
Another reason is fuel - In Japan 100 octane is available which helps performance.
Subaru 1992 Legacy Wagon GT. Japanese spec vehicle, EJ20G 2.0L (1994cc) turbocharged, 200 horsepower. Factory top mount intercooler, with a seperate radiator up front for optimum cooling.
I don't know how the Japs rate the Octane, there are two different ways. One of them is a higher number and the US uses the average of the two. So it could be a higher number but not any better....
I do know cars exported from Japan for sale as new cars for the Australian market are detuned for the local fuel.
In New Zealand where alot of J-Spec Subaru's have been imported they use 96 and 98 octane which is for sale at the local gas station.
Subaru 1992 Legacy Wagon GT. Japanese spec vehicle, EJ20G 2.0L (1994cc) turbocharged, 200 horsepower. Factory top mount intercooler, with a seperate radiator up front for optimum cooling.
For those of us in the USA... From what I have heard, "In the United States, Federal Law requires that gasoline octane ratings be posted on the pumps. The octane rating shown is an average of Research Octane Number (RON) and Motor Octane Number (MON). This number is also referred to as the anti-knock index (AKI) or Average Octane Number (AON)."
So for the "Regular" 87 AKI rated gas has a RON of 91, "Mid-grade" 89 AKI would be 93 RON, 'Premium' 91 AKI rated gas has a 95 RON, and around me there is even 93 AKI rated gas which has a rating of 98 RON.
So I guess that those cars from Japan that are tuned for 100 RON would need to be detuned a little for us to run them safely.
Noah
Boost: I know how much better my car feels at around 10 PSI than the 8.7 she runs stock.
Intercooled: every 10 degrees raise in temperature is about 1 HP lost. in addition, timing gets pulled due to a very hot intake charge. anything past 5-6 PSI really should have an intercooler. So intercooler means cooler intake charge, and more headspace for advanced timing.
IggDawg is cool.
-IggDawg
1994 Barcelona Red SVX LSi.
1990 CRX Si (for sale)
EJ20impreza: "Regular" 87 AKI rated gas has a RON of 91
That is not entirely correct. The ratings arent static, the 87 could have a higher or lower RON and MON averaged to the same number. In other words gas with the same octane rating in the us will not always perform equally.