@Jack, thanks. I'm flat-footed on the GT3, but the tooth design difference for more severe duty is a tell-tale of a potentially better balt.
@ LiL Jack, Left a chicken-egg choice on this reader. Favoring a belt-jump. You have a point to pursue; does a hung-stuck exhaust valve load the cam train;no. but a closed-stuck exhaust valve does. The rocker popping off is a big clue.
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