engine rebuild help
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This is a discussion on engine rebuild help within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Hi guys I'm new to the forum. I just bought my first subaru. I'm looking to rebuild the motor or ...

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    engine rebuild help

    Hi guys I'm new to the forum. I just bought my first subaru. I'm looking to rebuild the motor or have it rebuilt. Is there any good engine rebuild kits out there? How difficult is it to rebuild a subaru motor. It's an 04 wrx with the 2.0

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    Pro Manscaper Mikie13's Avatar
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    Welcome.

    Your question unfortunately is a little vague and is too subjective.

    We don't know your level of competence or technical abilities. I've been around Subarus for years and I doubt I could rebuild an engine...

    What do you want your end goal to be? Just getting back on the road or do you want more power? What do you want the car to do? Also, why does it need a rebuild?
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    I want it rebuilt. That's all I can tell you. At least stock or a little better. I'm not worried about it being super fast. I want to rebuild it because it has 200k on it. Well maintained but you can feel that it's underpowered even for stock. Still runs amazing but I just want it back to where it should be. How much would I be looking at spending on a rebuild and would it be better to rebuild it or just buy a motor and put it in?

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    The Guy On The Couch TownLine500's Avatar
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    Welcome!
    Keep in mind a built engine will never last as long as a factory engine.
    Cost will be based on your builds direction.
    Labor will be pricy, do you know a reputable shop to do the build for you?
    You would probably do better with a replacement engine that came out of a wrecked WRX.
    Your question is still a little vague, the more specific you can be.
    The better we will be able to help.
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    Quote Originally Posted by dlewis1000 View Post
    I want it rebuilt. That's all I can tell you. At least stock or a little better. I'm not worried about it being super fast. I want to rebuild it because it has 200k on it. Well maintained but you can feel that it's underpowered even for stock. Still runs amazing but I just want it back to where it should be. How much would I be looking at spending on a rebuild and would it be better to rebuild it or just buy a motor and put it in?
    Just buy a factory shortblock and have the heads rebuilt as well as a port/polish job for a little more power.
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    Quote Originally Posted by Donkey View Post
    Just buy a factory shortblock and have the heads rebuilt as well as a port/polish job for a little more power.

    ^this.. it will be more reliable, and likely cheaper than a "rebuilt" engine.

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    Pro Manscaper Mikie13's Avatar
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    I'd start with a Compression test on the current motor. Find out if your motor is healthy.

    Why spend money on it if the numbers come back within spec? Otherwise just do some maintenance: oil change, tranny fluid change, diff fluid change, maybe change some bushings/mounts, plugs, new filter, etc.

    Then drive it til the wheels fall off.
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    engine rebuild help

    If it's still running in a way that -- direct quote -- is "amazing" I'd leave it alone because any of the solutions will cost 50% of the value of the entire car, and end up with any luck giving you a motor that runs, well, amazing.

    If there were nothing else in the works to spend money on at all and I had to do something I'd do what Donkey said, buy a block, send off the heads, do the timing and pump, full gasket set, add a clutch set, all hoses, and a map. It could give another 200K but it'd probably end up costing 5K.
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    Well it feels underpowered even for being stock.

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    Pro Manscaper Mikie13's Avatar
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    Quote Originally Posted by dlewis1000 View Post
    Well it feels underpowered even for being stock.
    Being that this is your first Subaru, do you have any stock Subaru that you've driven to compare that to?
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    Quote Originally Posted by dlewis1000 View Post
    Well it feels underpowered even for being stock.
    Uh, what?

    This could be many things. If you think the car has a bad motor, compression and leakdown test. If that comes back bad, THEN consider a rebuild. Pretty silly to rebuild something that isn't broken, especially when it will exceed the cost of the car.
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    Quote Originally Posted by Mikie13 View Post
    Being that this is your first Subaru, do you have any stock Subaru that you've driven to compare that to?
    +1 to this. Does it just feel underpowered for what you mind thinks it should be? Maybe just have it tuned to run a more aggressive map first.

    Quote Originally Posted by zax View Post
    Uh, what?

    This could be many things. If you think the car has a bad motor, compression and leakdown test. If that comes back bad, THEN consider a rebuild. Pretty silly to rebuild something that isn't broken, especially when it will exceed the cost of the car.
    +1 to this too. Find out what's actually wrong (if anything) with the motor before thinking about rebuilding it. Pointless to spend the money fixing something that's not broken or overfixing something.
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    Pro Manscaper Mikie13's Avatar
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    Quote Originally Posted by WrxNate View Post
    Pointless to spend the money fixing something that's not broken or overfixing something.
    Exactly!

    Perhaps it is underperforming...but that could be as simple as a torn turbo inlet or something that will cost $100 to fix as opposed to $4000.
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    Even with 200k on the motor? I want it to be a dd but I want to start making it more powerful. Could I still do that on the block with 200k?

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    Quote Originally Posted by dlewis1000 View Post
    Even with 200k on the motor?

    If it ain't broke, don't fix it.

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