Are you sure it's not an interferance engine? It has detents in the pistons for valve clearance... The 2JZ is solid as a rock, it's typical toyota all around, EXTREMELY overbuilt and durable.
Timing belts have a bad rap for some reason, though they can be nearly as durable as chains, and are a lot lighter and have less drivetrain drag and noise. They're also a lot easier to replace. Very very few problems with the MkIV besides the high price tag :lol:
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