In my years in the automotive industry, I’ve learned that Subaru owners love their cars with good reason (the Subaru commercials are not lying!). Subarus handle well, have powerful engines, and with a few exceptions seem to last “forever.” Most Subarus sold in the US for from 1996 until now have been based around the 4 cylinder, 2.5L EJ25 engine in some variation. The EJ25 is both loved and hated as it has many benefits and many weaknesses. It is my opinion that the benefits of the EJ25 engine far outweigh its weaknesses. These cars
The EJ25D was used from 1996-1999 in the Subar Impreza (1998) Legacy/Outback (1996-1999) and the Subaru Forester (1998). These first generation engines manifested the main weakness of the Subaru EJ25 engine: leaky head gaskets. In most vehicles, a leaky head gasket is indicative of abuse. The same goes for the Subaru EJ25 engine. If you start to develop a leaky head gasket in your EJ25 engine, your vehicle’s “idiot light” (check engine light) will come on, and your temperature gauge will rise and indicate your engine is overheating. If you stop at this point, you can get away with replacing the headgasket. Some folks have had luck using a solution that Subaru sells to “plug” the headgasket. I personally do not recommend this solution as I’ve seen it lead to further problems. Some folks using it have had to replace not only their engine, but other parts (mostly related to the cooling system).
Cutting to the chase, EJ25 engines can develop a leaky head gasket because they get warmer than they should. They have a very short stroke and a wide bore. What this boils down to (pardon the pun) is an engine generating a lot of heat with comparatively little metal to dissipate it through. If the cooling system isn’t functioning flawlessly, these engines will overheat. When they overheat, it is common for the heads to warp and/or the blocks to crack. Rebuilding an EJ25 engine can thus be a waste of time and money.
It is best to replace your Subaru EJ25 Engine with a low mileage used engine. We’re proud to offer Low Mileage EJ25D engines (we offer all EJ25 engines) that have been extensively tested. We use a Simtest machine to run warm oil through the engines. They are then spun at high speed and extensively tested. They are compression tested to make sure each cylinder is withing recommended specifications. We also leakdown test each engine to verify the head gasket is good. With this extensive testing, we’re able to make sure we ship EJ25 engines that surpass our customer’s expectations and far outlast our standard warranty.
If you need a Subaru engine, we would love to help you. We’re experts – give us a call at 901-266-9996 (it is helpful to have your VIN handy.
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