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Old 10-10-2007, 10:39 PM   #1
Scooby Newbie
Member#: 149357
Join Date: May 2007
Chapter/Region: MWSOC
Location: Portland, Indiana
2004 Impreza WRX STI

Default sti motor build

OK i blew my sti motor early this summer and its time to build it. Should i build a stroker with stock head parts or should i build a strong bottom end with cams and etc.? Don't have the money to do both. Any body have any ideas or suggestions ?
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Old 10-11-2007, 11:19 AM   #2
Scooby Guru
Member#: 4001
Join Date: Feb 2001
Location: I love spherical bearings!
2006 Legacy GT
Obsidian black


How did you blow your motor? That will kind of give us a clue as to what you are trying to do with the car.

And go look in the Built Motor Discussion forum.

Generally, strokers are only for those people that are looking for every single last ounce of power from a built engine and have the deep pockets to back it up. If I were to guess, just get some forged rods and pistons and call it a day. From what I have read, cams don't do very well unless you have a decent amount of headwork, which is very pricy.

What turbo are you working with?
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Old 10-11-2007, 11:59 AM   #3
Scooby Guru
Member#: 10108
Join Date: Sep 2001
Chapter/Region: TXIC
Location: Lake Travis, Austin, TX
07 STI
60Trim spun rod bearing


Just do a new shortblock with drop in forged pistons unless you are going bigger than a 20G. If you install it yourself, you can get it all done for ~2500 bucks. There are many 07 STIs that are having to do this.
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