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Re: toyota heads replacement
Tony,
Are you sure its coming from the heads?
I have an 86 4Runner with a 22RE engine (injected). I have come to
learn that a very common problem with Toyota's is the timing chain.
(Yes, its a chain and not a belt, but possibly not the case for ALL
toyota engines). Anyway, what happens is after a few miles (100k or so)
the timing chain gets so loose by the tensioner either falling off and
dropping into the oil pan or the chain stretching that the chain begins
to tap on and wear a groove through the chain cover. Then, once a
groove goes all the way through the cover, the engine coolant flows
freely into the oilpan and does a number on your engine. The noise
could very well be that. Especially if its accomanied by any of the
following: a slight off-timing during startup/shutdown or acceleration
and/or a "dieseling" during shutdown.
I'm having my whole engine rebuilt (for other issues too) and I can
recommend a great mechanic in Long Beach if you need one.
Peace,
Kyler
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