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Old 03-23-2009, 11:43 PM   #9
FuJi K
Scooby Guru
 
Member#: 3687
Join Date: Jan 2001
Chapter/Region: MWSOC
Location: St. Paul, MN
Vehicle:
MY99 GF4 JDM 6spd
NF Performance

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The stock double cross drilled will work fine; purchased NEW from Subaru for 2.0L(all 2.0L cranks are now sold double cross drilled). At TDC there is still oil being fed to the rod bearings. Not matter what, oil still has to go THROUGH the clearance between the rod bearing and crank. You will need to just UP your oil pump in shimming or go bigger volume to help aid in higher revs.

2.0L non-AVCS I'd say get a 11mm oil pump. AVCS heads you want to at least go 12mm oil pump to keep that there like how the JDM model is doing it stock. The STOCK STi Version 6 uses a 10mm oil pump, however I'm unsure if it's shimmed or not but that's what the pump is stamped with when I looked at that motor a few days ago.
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