How much boost?
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Joined: Nov 2002
Posts: 528
From: 925
Car Info: White 2000 2.5RS-Turbo
yea '98 headgasket is weaksause. find a suitable replacement, and the mad torque will snap gears before the engine blows.
(tuned by a capable tuner 10 - 12 MAX for daily driver)
(tuned by a capable tuner 10 - 12 MAX for daily driver)
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We'll be using MY89-93 Legacy Mk1 DOHC heads, they have different valve angle and an increased combustion volume in the cylinder head. Using these heads on a standard EJ25 short block will result in a CR of 8.4:1, using a standard (1.6 mm) head gasket.
Car is running standard boost, ie. 0.74 bar. How much is that in psi?
Because the car that the engine is going into is a European MY92 Legacy Turbo (EJ20 DOHC, 200 hp standard) I think the gearbox will cope. We're already running a modified downpipe and exhaust system, but we don't want to tamper with the electronics to increase power. We'd rather run a bit more displacement. Or as you Americans say: 'There's no substitute for cubic inches'.
Car is running standard boost, ie. 0.74 bar. How much is that in psi?
Because the car that the engine is going into is a European MY92 Legacy Turbo (EJ20 DOHC, 200 hp standard) I think the gearbox will cope. We're already running a modified downpipe and exhaust system, but we don't want to tamper with the electronics to increase power. We'd rather run a bit more displacement. Or as you Americans say: 'There's no substitute for cubic inches'.
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Joined: Nov 2002
Posts: 528
From: 925
Car Info: White 2000 2.5RS-Turbo
huh? You SHOULD dial it in with electronics to run the motor more effieciently. I mean, yea, go bigger displacement for more power, but i hope this isn't just a another frankenmotor project that explodes from lack of fuel management?!?! 
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From: Reno, NV
Car Info: 1993/2000/2001 GF4 mostly red
Originally posted by Marnix
We'll be using MY89-93 Legacy Mk1 DOHC heads, they have different valve angle and an increased combustion volume in the cylinder head. Using these heads on a standard EJ25 short block will result in a CR of 8.4:1, using a standard (1.6 mm) head gasket.
Car is running standard boost, ie. 0.74 bar. How much is that in psi?
Because the car that the engine is going into is a European MY92 Legacy Turbo (EJ20 DOHC, 200 hp standard) I think the gearbox will cope. We're already running a modified downpipe and exhaust system, but we don't want to tamper with the electronics to increase power. We'd rather run a bit more displacement. Or as you Americans say: 'There's no substitute for cubic inches'.
We'll be using MY89-93 Legacy Mk1 DOHC heads, they have different valve angle and an increased combustion volume in the cylinder head. Using these heads on a standard EJ25 short block will result in a CR of 8.4:1, using a standard (1.6 mm) head gasket.
Car is running standard boost, ie. 0.74 bar. How much is that in psi?
Because the car that the engine is going into is a European MY92 Legacy Turbo (EJ20 DOHC, 200 hp standard) I think the gearbox will cope. We're already running a modified downpipe and exhaust system, but we don't want to tamper with the electronics to increase power. We'd rather run a bit more displacement. Or as you Americans say: 'There's no substitute for cubic inches'.
Are you also using the stock Legacy turbo? I would be concerned that it won't be as efficient flowing 35-40% more air than it is used to. If you are flowing more air through a given turbo, you also have to raise boost- which the rest of your engine may not like.
Last edited by Kevin M; Aug 5, 2003 at 05:51 PM.
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The engine that's currently in the car is a closed deck EJ20 homologation engine with very big TD05 turbo charger. It won't hurt to have more gasses flowing through the turbine! As for fuel management, we'll be monitoring it with a lambda-meter (10 leds). However, both fuel pump and injectors can cope with up to 270 - 280 hp in stock form, so we'll see. I'm aware that we'll probably end up in that margin.
As for the 'Frankenstein' worries: I have succesfully adapted a JDM EJ20 DOHC (150 hp) atmo engine to run on a European ECU for an EJ20 SOHC (115 hp) engine, and I've built plenty of these engine so far, and all of them are still running (first one built in 1998).
I'll keep you posted.
As for the 'Frankenstein' worries: I have succesfully adapted a JDM EJ20 DOHC (150 hp) atmo engine to run on a European ECU for an EJ20 SOHC (115 hp) engine, and I've built plenty of these engine so far, and all of them are still running (first one built in 1998).
I'll keep you posted.
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Joined: Nov 2002
Posts: 528
From: 925
Car Info: White 2000 2.5RS-Turbo
Originally posted by Marnix
However, both fuel pump and injectors can cope with up to 270 - 280 hp in stock form, so we'll see. I'm aware that we'll probably end up in that margin.
However, both fuel pump and injectors can cope with up to 270 - 280 hp in stock form, so we'll see. I'm aware that we'll probably end up in that margin.
I'd give you my first born if u can run stock injectors at 260whp and the motor doesn't choke.
