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Old 03-01-2013, 09:54 AM   #1423
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1984 AM5, 1984 AF1,
1994 BC4, 2015 Outback


Originally Posted by Patrick Olsen View Post
0.50mm over pistons (with pins, of course) - 6 x 12006AB860 (per Jackie @ Annapolis Subaru, there are different part numbers for '01-02 and '03-04 engines; I don't know why)
I know why

The 01-02 engines have cams with mm more lift (10.1 mm intake, 9.6 mm exhaust) requiring the pistons to have very small valve pockets in the crown. The 03-04 engines have cams with less lift (9.8 mm intake, 9.3 mm exhaust) which allowed for completely flat pistons without valve pockets. Timing of both types of cams is the same.
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