Quote:
Originally Posted by Marrk
^^There are a lot of smart guys on this forum. Maybe one of them can explain this.
Buckets and shims are not an either/or choice. They are two parts on the shim-type adjustment design.
Only self-adjusting valve designs require no adjustment. A self-adjusting design would be hydraulically self-adjusting — not often used on high-revving sports cars
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Either way, I know that Subaru owners don't do valve adjustments on the current motors as a part of regular maintenance. Not unless the valves or tapping or its having misfires or something indicative of an actual problem. Although thats probably due to the 7+ hours of labor involved...
Subaru people tend to worry more about headgaskets, timing belts and burning valves (or blowing pistons due to oil starvation with the turbo motors) than actually adjusting the valves as a maintenance item.
Come to think of it, I should probably check mine. I'm at 110,000 miles and I need to do my timing belt soon. I do have the occasional misfire code. I should just pull the engine and do both.