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Go Back   IWSTI.com: Subaru WRX STI Forums > IWSTI Engine & Drivetrain > 2.5 Liter/Litre Factory Motor


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Old 12-26-2007, 09:25 PM   #1
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Angry There are not forged OEM pistons in 08 STI!

Edit: title changed to reflect information obtained after this post was made:

CAR & DRIVER 2008 FEB

In the rewiev of the 08 STI does Subaru project manager Hiroshi Mori say:

"The nitride hardened crank is carry over from the earlier sti, and the deeper webbed rods and the FORGED pistons are new part numbers"


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Last edited by Swede; 01-02-2008 at 05:14 PM.
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Old 12-26-2007, 09:27 PM   #2
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Default Re: Forged OEM pistons in 08 STI!

so does that include usdm?
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Old 12-26-2007, 09:32 PM   #3
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Default Re: Forged OEM pistons in 08 STI!

Forged pistons,Recaro seats and keyless ignition are probably the same place. NOT in USDM. Can you hear me SOA?
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Old 12-26-2007, 09:44 PM   #4
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Default Re: Forged OEM pistons in 08 STI!

They are testing the USDM sti in the magazine.

They also write "An IHI sourced single scroll turbo peaks at 14.7psi of boost, 2.8 psi higher than in the wrx. Variable timing mechanisms adjust the intake and exhaust cams with a tune aimed at flatter torque curve. The increase from 293 hp in the old sti to 305 is mainly due to the larger IC and a higher volume exhaust silencer and lower restriction catalyst according to Mori"

Sonds like they are talking about the USDM sti to me!
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Old 12-26-2007, 10:11 PM   #5
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Default Re: Forged OEM pistons in 08 STI!

Ok, one out of three. Oh yeah, twin scroll. One out of four.
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Old 12-26-2007, 10:45 PM   #6
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Default Re: Forged OEM pistons in 08 STI!

it's still a step in the right direction
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Old 12-27-2007, 01:24 AM   #7
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Default Re: Forged OEM pistons in 08 STI!

Quote:
Originally Posted by steelgraySTi06 View Post
it's still a step in the right direction
Agreed
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Old 12-27-2007, 02:25 AM   #8
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Default Re: Forged OEM pistons in 08 STI!

usdm and jdm sti are very different, its almost totally different engine with same body.
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Old 12-27-2007, 12:12 PM   #9
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Default Re: Forged OEM pistons in 08 STI!

Has anyone confirmed that the pistons are forged?
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Old 12-27-2007, 12:47 PM   #10
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Default Re: Forged OEM pistons in 08 STI!

ditto
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Old 12-27-2007, 03:57 PM   #11
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Default Re: Forged OEM pistons in 08 STI!

they are
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Old 12-28-2007, 06:54 AM   #12
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Default Re: Forged OEM pistons in 08 STI!

Quote:
Originally Posted by Adrian GT View Post
they are
I will wait untill someone sees first hand. This is not the first time a claim like this has been made and turned out to be a mistake.
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Old 12-28-2007, 07:08 AM   #13
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Default Re: Forged OEM pistons in 08 STI!

Quote:
Originally Posted by polyol View Post
I will wait untill someone sees first hand. This is not the first time a claim like this has been made and turned out to be a mistake.
Agreed
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Old 12-28-2007, 11:20 AM   #14
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Default Re: Forged OEM pistons in 08 STI!

Quote:
Originally Posted by polyol View Post
I will wait untill someone sees first hand. This is not the first time a claim like this has been made and turned out to be a mistake.
same claim was made on the '04.
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Old 12-28-2007, 12:15 PM   #15
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Default Re: Forged OEM pistons in 08 STI!

Quote:
Originally Posted by Adrian GT View Post
they are
What is your basis for this statement?


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