Alex C Posted March 6, 2005 Share Posted March 6, 2005 What are the specs? Diameter, compression, weight, wrist pin size, number of rings. Can we do a comparison of all of these with all the available subaru engine types? Alex Link to comment Share on other sites More sharing options...
85Sub4WD Posted March 6, 2005 Share Posted March 6, 2005 As I recall the diameter is the same for all - EA82 pistons had compression ratios 9.0:1 (carb/early MPFI N/A), 9.5:1 (SPFI/late MPFI N/A), and for turbos, 7.7:1 I think the EA81 had 8.7:1 compression Don't know about EA71 All are 3-ring slipper type - and I think all are interchangeable Link to comment Share on other sites More sharing options...
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