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Old 08-29-2004, 09:54 AM   #1
Scooby Newbie
Member#: 45117
Join Date: Oct 2003
Exclamation Big power....big problem?

Hey everyone, I have a 2001 Forester N/A manual awesome car and no complaints...except one..power..there is none. So im looking at installing a Legacy GT (BG5) twin turbo engine. Now mechanics are hard people to get straight answers out of. You ask one and they say it will be fine others say something else. Can anyone who may have done a engine conversion on a nat asp engine to a turbo engine help? Subaru keeps its parts pretty similar across the range dont they? So will the diff, gearbox cope with the power? And one last question, will the twin turbo fit in the engine bay? Any other little tips would be awesome. Thanks guys
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Old 08-29-2004, 11:10 AM   #2
Scooby Specialist
Member#: 11932
Join Date: Nov 2001
Chapter/Region: Tri-State
Location: NY
1998 CW ITR
2006 NBP SI


from rumor so im not positive, but i hear that the twin turbo wont fit due to the LHD rack..

and for gear box, u have a auto or manual?

i dont know anything about the autos but the manuals can hold up for non abusive driving. but when u blow the tranny u can just swap a stronger gearset into the tranny
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Old 08-29-2004, 11:13 AM   #3
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Join Date: Aug 2001
Chapter/Region: SWIC


I would just give up on the TT idea reall not worth the termendous effort involved, you would most likely need to convert the car to rhd..

I would just grab a v7 or v8 sti motor or even a usdm sti motor. I just sold a guy in NM a usdm sti motor, he has a legacy he is dropping it into. He als has a full b4 twin turbo clip but decided against trying to use it because of the amount of work it would take to do..
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Old 08-29-2004, 01:50 PM   #4
Homemade WRX
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Join Date: Mar 2003
Chapter/Region: MAIC
Location: 3MI Racing LLC
96 bastard child
search FIRST, then PM!!!


just do a single turbo swap...
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Old 08-29-2004, 06:12 PM   #5
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Member#: 2272
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Chapter/Region: BAIC
Location: Mars
2013 Subaru BRZ
Galaxy Blue


A TT wont fit. The Forester has basically an Impreza engine bay, and it doesnt fit in imprezas. Its not that great of a motor either. A twin scroll turbo setup would be better if you want that lack of low end lag effect.
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Old 08-29-2004, 09:18 PM   #6
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Join Date: Jul 2002
Chapter/Region: Tri-State
Location: LI, NY

the brake booster and master cylinder are in the way on a LHD.
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Old 08-29-2004, 11:15 PM   #7
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Member#: 45117
Join Date: Oct 2003

hmm, thanks guys, i'm in Australia so no need to do a RHD swap. But yeah i'm conserned about it fitting in still. I'll try and just find a single turbo but its isnt easy down here for a decent price. Their all 95-96 models with way to many miles/kilometers on the clock. I'll keep searching. Thanks
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