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Sebba -> RE: 02 MonteroSport diagnosis (3/9/2008 9:45:08 AM)
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Okay, my advice here is to pull the heads off, its really not that hard (getting them off that is), inspect the pistons for dents. It is acceptable for the pistons to have a little nick, thats common, but a hole or anything like that.... and the motor is gone.
Personally, I wouldn't bother rebuilding the heads. What I would do, is look for a used set of heads off eBay (they really do exist) and just install them. Remembering that you cannot reuse the head bolts because they are one use stretch bolts, and you will need to replace those. I'm sure you know you can't reuse the head gaskets too, they need to be replaced.
I am 95% sure that the camshaft would be okay.
Right now, what you need to do is do damage asessment. Pull the heads off and take a peek. If need be, take a pic and post on here so we can tell you if it is truely toast or not. More than likely you are okay, these motors are rock solid.
I would recomend against replacing the whole motor, for the reason of simplicity. It is a bitch and a half getting the motor in and out of that engine bay, im sure you could tell just by looking at it.
Although it may seem complicated, a head replacement isn't all that hard. Just buy yourself a Haynes or Chiltons manual so you can know what sequence you have to torque down the head bolts to, and you should be okay. The hardest part is going to be doing the timing belt. Don't want to get that wrong... and have to start all over again.
Good luck!
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