Did you use a high quality timing belt? We had a 98 impreza 2.2 and put an aftermarket timing belt kit on it and the belt broke in 30k miles for no reason. Tensioner and pulleys were all fine.
Best Timing belt for Subaru Impreza
Just had the same work done. Same car. I paid more, and I felt like I got a good deal.
Aisin is the one you want. Full stop.
I just did a timing belt / water pump kit on my bugeye. All the components you get with it are exactly what you’d get if you went to the dealership (even down to the little component boxes albeit with a different logo stamped on it), except for maybe the pump itself. Aisin was one of the OE water pump manufacturers, and they have a long history in Japanese car parts and motor sports. The instructions that come with the kit make it super easy, too.
I installed a Gates timing kit on my 2011 2.5 N/A 5 speed manual 50k miles ago (150k total). The belt snapped while I was doing 80mph on the turnpike. My valves were bent with deeper internal damage more likely than not.
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