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Old 07-31-2005, 10:43 PM   #1
spdracr00
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Default Please help me, 99 legacy motor swap

Ok so i did a search and i'm more confused now then at the start. heres what i have, MY99LOB wagon, starting to have HG issues. 71K miles. 2.5L 5sp MT.

I need to know what to do to fix my car, she is my daily driver and i'm broke. I tried searching about motor swaps, I've done it with VW's and a Civic so that seems like a decent option, but i have no clue as to what motor fits the best.. bolts right up.. blah, blah blah. I would love to do a WRX motor swap, but I dont have the $3k laying about to start that project. So i need to know if its worth pulling my motor and doing the HG's or just swap in a newer motor '00 and up that dont have the HG issues. can i fit a shortblock? can i fit a long block? help!! so many options.

-ben
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Old 08-01-2005, 01:23 AM   #2
Sleeper20t
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Pretty much any subaru motor will be able to fit. Swapping the motor is probably too much of a hassle to be worth it, unless it were for performance reasons. I would definitely go with doing the head gasket. Subaru redesigned the new head gaskets and you will have a healthy reliable motor (assuming this is the only issue) when you replace them. They should only run you 100-150 in parts. Good luck!
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Old 08-01-2005, 05:51 AM   #3
Subietonic
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You've got a Phase 1 DOHC 2.5L, so swapping in a Phase 2, SOHC (00-04) 2.5L will not be easy or inexpensive. If you can pull the motor and don't mind tearing down your current motor, I'd recommend getting the the replacement HGs and a new water pump (might as well replace that while you have it out and have the timing belt covers off). You could do this easily, over a weekend, if you have the right tools and the replacement parts. Would save you some down-time

Otherwise, locating a good used, HG repaired, P1 DOHC engine might work for you. Just make sure it's a DOHC and it's a 97-99. 96 2.5Ls had higher compression ratio and required premium gas IIRC so that's why I recommend the 97-99s. The 00 and newer 2.5s are all SOHC and have a host of different sensors and electronics that differ from the DOHC, so that would mean that you'd also have to find an ECU for the 00+ Legacy/OB as well. Also, IIRC, the 00 and newer SOHC engines used the MAP instead of the MAF sensor so that's another thing that you'd have to content with.

Good luck and keep us posted
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Old 08-01-2005, 10:22 AM   #4
spdracr00
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Looks like i'm gonna learn how to replace my headgaskets.. haha..
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Old 08-01-2005, 10:35 AM   #5
Huffer
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You can swap shortblocks with pretty much any EJ series engine. I have a shortblock from a 99RS (SOHC, 10.2:1 compression) sitting waiting to be mated to my DOHC heads.

I got mine free, and the SOHC shortie isn't prone to the same piston rattle that the Legacy engines have.
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Old 08-01-2005, 12:41 PM   #6
Kraziken
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Quote:
Originally Posted by spdracr00
Ok so i did a search and i'm more confused now then at the start. heres what i have, MY99LOB wagon, starting to have HG issues. 71K miles. 2.5L 5sp MT.

I need to know what to do to fix my car, she is my daily driver and i'm broke. I tried searching about motor swaps, I've done it with VW's and a Civic so that seems like a decent option, but i have no clue as to what motor fits the best.. bolts right up.. blah, blah blah. I would love to do a WRX motor swap, but I dont have the $3k laying about to start that project. So i need to know if its worth pulling my motor and doing the HG's or just swap in a newer motor '00 and up that dont have the HG issues. can i fit a shortblock? can i fit a long block? help!! so many options.

-ben
I don't know if it would be of interest to you, or if the timing is wrong.

But I'm looking to swap my motor out soon.

My '99 GT motor has 99k on it. But the head gaskets have already been replaced at 77k or so by smart service. The engine still runs strong. I'm just tired of being slow. You could test the motor in my car currently.

I'd part with the motor and the entire wiring harness. My 5 speed tranny will also probably be available. PM me if you might be interested.

Ken
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Old 08-01-2005, 05:15 PM   #7
Subietonic
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spdracr00 and Kraziken - engines swap sounds like a match made in heaven. How's the tranny? IIRC the GT tranny is 4:11 and the OB is 4:44 so that would require a rear diff swap to work.
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Old 08-01-2005, 08:43 PM   #8
spdracr00
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hmm, a swap would be easy, but I think i'm going the cheap route and pulling my motor and changing the gaskets and waterpump and timing belt while the motor is out. damn cars... sheesh...
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Old 08-01-2005, 10:03 PM   #9
reddevil
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Just fix it. If you are pulling the motor, you can fix it. It might take you a little longer than a pro, but all it comes down to is bolts. And then you get the satisfaction of doing it yourself and knowing you have new parts.

Personally, I have always replaced my rings and seals and clutch at the same time.
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