Hi,
So I'm investigating the best way to repair my 1995 legacy wagon with a leaking head gasket. I don't particularly want more power or anything, just a long-lasting reliable engine.
option 1: just pull the existing ej22 and replace the head gasket. Timing belt, water pump, thermostat have all been done recently so shouldn't be much to do except the gasket.
1a: coolant conditioner? The gasket leak isn't causing overheating right now in my test drives, just bubbles in the coolant overflow. But I'm off on a long trip this summer, and have time to do the fix right so I'm less likely to consider this option.
option 2: I've got an EJ253 from a 2000 R.S. that has about 170k miles on it. Ran fine when removed, the owner just put in something souped up. Suggested I rebuild before putting it back in, but that's just common sense not because he knew of anything wrong.
I'm leaning toward option 2, mostly because I can do the work on the new engine while I continue to drive the car. This is based off a number of assumptions that I'd love confirmed before I dig into the work:
1) both are "phase 2" SOHC engines so wiring and sensors ought to just plug in (ack, not sure this is true. I thought an original EJ22 from 1995 was phase 2, but just read elsewhere that phase 2 started in 1997, which is right?Does it matter to me?)
2) engine mounts, transmission, headers etc. will all just plug and play
3) even though the EJ253 is slightly bigger it should just slide into the existing space
4) scared of the head gasket leaking issue on the EJ253, but hear that the 11044AA642 gasket set will largely eliminate this problem. Is the EJ253 going to be as reliable as the existing EJ22?
Since I don't know much about this particular EJ253 I'd probably replace timing belt, water pump, oil pump, thermostat while I'm in there. Don't know that I'd do much beyond that, though. Are there other parts I ought to replace?
I'd love opinions and gotchas. Thanks!
--Derek