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Old 05-16-2003, 10:05 AM   #5
Scooby Specialist
Member#: 5380
Join Date: Apr 2001
Location: Edmonton
1999 Impreza


Sorry, no pics. The heads DO physically fit on top of the block. But the fluid passages do not line up correctly, making head gasket selection extremely difficult. While you might get "some" fluid (oil & coolant) flow, it will be very restricted. The older 1.8 blocks had relatively small/restrictive passages fluid anyways. The best match I have found so far is the Legacy Turbo block (EJ22T) w. the WRX heads using a V3 or V4 STi head gasket. Almost no port matching is needed. Contrary to pop. belief the early 90's EJ22T was NOT just a bored out 1.8L block. It is a completely different motor. Hope that helps.

FWIW, the best flowing heads are the phaseI EJ25 DOHC heads if you're talking pure volume. Of course, genuine EJ20 STi heads flow much better/faster but do not carry the volumetric efficiency of the EJ25.
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Last edited by damianq; 05-16-2003 at 10:11 AM.
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