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Old 07-15-2010, 12:29 AM   #1
Scooby Newbie
Member#: 225185
Join Date: Sep 2009
Default Installing a Tranny & Engine question


Getting ready to upgrade (remove and replace) my stock tranny to handle my 'work in progress' EJ25 DOHC motor w/ turbo. The car is a 2004 Impreza Outback Sport wagon. The crossmember has been modified for the turbos exhaust

Has anyone tried bolting the tran to the engine 1st and then installing it into the car? If so, could you please share some of the highs and lows?


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Old 07-15-2010, 10:49 AM   #2
FuJi K
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Member#: 3687
Join Date: Jan 2001
Chapter/Region: MWSOC
Location: St. Paul, MN
MY99 GF4 JDM 6spd
NF Performance


I try NOT to install them like so because of the extreme weight. Mounting points can break threads off the engine or tranny if you don't use good points. I normally just install engine or tranny separately.
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Old 07-15-2010, 12:35 PM   #3
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Location: SAUL'S Motorsports
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Developed Beater


The assembly is long when bolted together. The engine bay is wide but not so long......the angle required makes installation a pain. Doable....but not fun or easy.

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Old 07-15-2010, 09:07 PM   #4
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Member#: 123362
Join Date: Aug 2006
Chapter/Region: MWSOC
Location: Dorothy's House
'93 Crapcan EJ25D


I've done both. It took 3 of use to install the engine/tranny combo for the reasons listed above. We used a 2 ton engine crane and it was tight, but doable.

I would recommend installing them separately.
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Old 07-16-2010, 07:55 AM   #5
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Chapter/Region: NESIC
Location: CT
NASA #530 GTS2


If you have the equipment and help I'd recommend installing them as a unit. It's how it's done at the factory - only down side is it needs to be installed from the bottom of the car... not through the top of the engine bay
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Old 07-16-2010, 09:51 AM   #6
Matt Monson
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99 2.5RS, '85 911
'73 914 and 2012 BRZ


I'd only recommend doing it if you've got access to a lift. I've done it this way by lifting the car way up and lowering it down onto the engine/gearbox assembly that's on a stack of pallets. The engine assembly was attached to the crossmember in advance, along with the tranny mount. Then once you lower the car onto it, you climb under and just bolt up the crossmember (with steering rack already attached).
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Old 07-16-2010, 11:08 AM   #7
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Join Date: Mar 2009
Chapter/Region: MWSOC
56 Belair
Pro Street


never had any issue with installing a 3.3 and trans at the same time.
the entry angle is crazy, though. Watch your rad support
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Old 07-16-2010, 02:18 PM   #8
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2005 Subaru STI
2003 EJ207 S204 Wagon


The easiest route is, pull your old motor out first then drop the tranny, and reinstall in reverse order (tranny and then motor). It's easier to line the motor up with the tranny/clutch using an engine lift, then lining up the tranny with the motor/clutch from under the car. It's more difficult trying to install them connected.
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