January 10, 200521 yr I just purchased the 97 obw, 75k, and Am thinking ahead to the inevitable hg problem. How complex would it be to swap in a phaseII 2.5l?
January 10, 200521 yr It has been done. A guy that use to post here did exactly that with a 97 Legacy GT. He ran into some issues. I have correspondence stored somewhere from him, as I was considering it myself nearly 3 years ago when the HG went on my 97 OB. Let's just say that it is not exactly plug and play. Btw, he used the existing wiring harness and ECU. Commuter
January 10, 200521 yr The 2.2 is a bolt in...and they are super reliable. I have 241k plus on mine...
January 11, 200521 yr Author what do you think of the current hg rev. I have read One person who believes it will alst the lifetime of the car.
January 11, 200521 yr As much as I dislike the 2.5L DOHC engine, I would say replace the head gaskets, if and when, they blow. Frankly, they may never blow. This engine appears to have a very significant head gasket failure rate. Even so, the majority of 2.5L DOHC engines probably never experience a head gasket failure. Some 2.5L DOHC engine owners have posted that they're on their fourth set of replacement head gaskets. But the vast majority of 2.5L DOHC appear to be permanently repaired after one head gasket replacement. The lastest version of the head gasket seems to be a pretty good "fix". I would have avoided a car with the DOHC engine in the first place. But now that you have it just play out your hand and hope for the best.
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