Horsepower Guestimate?
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Joined: Dec 2002
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From: The Couve in Washington State
Car Info: 02 BRP 2.5RS-T
Horsepower Guestimate?
I don't have any 1/4 mile times or trap speeds, Just wondered if there was a way to guess my HP and TQ knowing the compression ratio was 9to1, Boost at 15psi and displacement at 2.5L? Is there anyway to guess a ballpark figure?
Orignally I had a GC 2.5RS 165HP engine, that I sent off to TWE to have a build up. I also had the AVO kit for the RS, which according to one dyno is 212 at the wheels.

The TWE build included the following:
9:1 CR SOHC Pistons 100mm
Ceramic Coating on Crowns
Moly-Graphite Coating on Skirts
Piston Coatings
Light-weight, Hollow Wrist Pins
Subaru Piston Rings 100mm
Billet Conrod Set EJ25 SOHC
Heavy Duty Conrod Bearings 52mm
Subaru Brg Set-Crankshaft
Boring, Cylinder
Polish Crankshaft
Milling, Cylinder Deck
Balance Crank, Rods, Pistons to 0.2 gram
ARP Series 2000 Bolts
Cometic 'Turbo' gaskets
ARP Head Studs
Along with APS TGV Deletes, a WRX manifold(Polished) and 740cc modified WRX injectors, with Perrin Fuel rails. Perrin MBC
So my compression was lowered from the original 10to1 and the boost weas raised to 15/16psi from the orginal 6psi
Orignally I had a GC 2.5RS 165HP engine, that I sent off to TWE to have a build up. I also had the AVO kit for the RS, which according to one dyno is 212 at the wheels.

The TWE build included the following:
9:1 CR SOHC Pistons 100mm
Ceramic Coating on Crowns
Moly-Graphite Coating on Skirts
Piston Coatings
Light-weight, Hollow Wrist Pins
Subaru Piston Rings 100mm
Billet Conrod Set EJ25 SOHC
Heavy Duty Conrod Bearings 52mm
Subaru Brg Set-Crankshaft
Boring, Cylinder
Polish Crankshaft
Milling, Cylinder Deck
Balance Crank, Rods, Pistons to 0.2 gram
ARP Series 2000 Bolts
Cometic 'Turbo' gaskets
ARP Head Studs
Along with APS TGV Deletes, a WRX manifold(Polished) and 740cc modified WRX injectors, with Perrin Fuel rails. Perrin MBC
So my compression was lowered from the original 10to1 and the boost weas raised to 15/16psi from the orginal 6psi
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