Thread: Pistons
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#1: 02-05-2013, 07:19 AM
Pistons
 
 islandborn
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Title: I ride Kharon
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Weak point in the engine... I know very little about. A quick search brings up a great selection from Rallysport! But.... I don't understand why the different sizes. If you ordered a set, which and why? Someone educate me! Here are the choices:

CP Piston Set 99.5mm Bore 8.2:1 CR Subaru Turbo 2.5L (inc. 2006-2013 WRX / 2004-2013 STI)

CP Piston Set 99.75mm Bore 8.2:1 CR Subaru Turbo 2.5L (inc. 2006-2013 WRX / 2004-2013 STI)

CP 99.5 Bore 9.0:1 Piston Set Subaru Turbo 2.5L (inc. 2006-2013 WRX / 2004-2013 STI)

Wiseco Piston Set 99.75mm Bore Subaru Turbo 2.5L (inc. 2006-2013 WRX / 2004-2013 STI)

Cosworth Forged Piston Set 99.5mm 9.2:1 CR Subaru Turbo 2.5L (inc. 2006-2013 WRX / 2004-2013 STI)

CP Piston Set 100mm Bore 9.0:1 CR Subaru Turbo 2.5L (inc. 2006-2013 WRX / 2004-2013 STI)

Wiseco Piston Set 99.5mm Bore Subaru Turbo 2.5L (inc. 2006-2013 WRX / 2004-2013 STI)

Wiseco Piston Set 100mm Bore Subaru Turbo 2.5L (inc. 2006-2013 WRX / 2004-2013 STI)

Cosworth Forged Piston Set 99.75mm 8.2:1 CR Subaru Turbo 2.5L (inc. 2006-2013 WRX / 2004-2013 STI)

CP Piston Set 100mm Bore 8.2:1 CR Subaru Turbo 2.5L (inc. 2006-2013 WRX / 2004-2013 STI)

CP Piston Set 100mm Bore 8.2:1 CR Subaru Turbo 2.5L (inc. 2006-2013 WRX / 2004-2013 STI)

Cosworth Forged Piston Set 99.5mm 8.2:1 CR Subaru Turbo 2.5L(inc. 2006-2013 WRX / 2004-2013 STI)

CP 99.75 Bore 9.0:1 Piston Set Subaru Turbo 2.5L (inc. 2006-2013 WRX / 2004-2013 STI)

Cosworth Forged Piston Set 100mm 8.2:1 CR Subaru Turbo 2.5L (inc. 2006-2013 WRX / 2004-2013 STI)

**Now to my credit, I do know that Cosworth is the top by most standards.
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