NotLurking

CCRINC, thanks for the compression and fuel requirement info... Saving a little bit per gallon using mid-grade sounds good to me!

Ha! That's Cool!! Been pumping "required" 91 octane into my Vanagons for the last 18 years. Can you believe... VW built these without a knock sensor!!! Thankfully, Subaru engineers stepped up and built a proper H-4!

OOPs, I meant thanks, Fairtax4me! Just noted your cam and rocker insights... we are talking relatively small gains? I assume less than 5 HP? Do the compression bump and coated pistons take this from 130 up to the phase 2's 140 HP? Understand that I'll be ecstatic to make the leap from the VW's 85-90 HP to just 130! Thanks, again!

Scooberoo, Thanks for those gasket insights... I used the factory phase 1 gaskets, which looked to be the right thing, because I purchased the whole OEM engine kit out of an abundance of caution. I understand the valve seals and other essential seals last longer if OEM. Any insights on the compression question? The ECU will adjust for knock, but... should I just run 91 octane to be sure? Best NotLurker

1993 Legacy Ej 2.2 phase 1 heads, intake, harness, and ECU on a Phase 2 EJ2.2 block? Hi this may seem like a stupid question, to which I have found no no answer... Presumably because anyone thinking of changing their shortblock would want to go UP in displacement in the process, hence all the 2.2 to 2.5 frankendiscussions... I have an unusual situation because California emissions require that I use an EJ22 block and pre-94 emissions (OBD 1) for my Vanagon conversion. I am building an "as new" motor, to last many long years and have purchased a factory Phase 2 Ej22 crate short block and have had the Phase 1 heads rebuilt and a valve job performed to use as a basis. A 1993 Legacy L donor car and will supply the heads & all the intake & emissions systems as required by CA.. Are there any special considerations to using the phase 1 2.2 heads on the phase 2 block? Specifically: I am aware that the compression will go up and that the engine becomes an interference motor. Have done a test build of the long block, and timing, and everything goes together fine, Intake manifold lines up correctly, etc... BUT... are there any "special" considerations?? Phase one, or Phase 2 head gaskets usable?? or modifications to either? Tweaks or other considerations to correct for the higher compression? (the motor is self adjusting but, to what limits?) Thanks!!! the project:

1993 Legacy Ej 2.2 phase 1 heads, intake and computer on a Phase 2 EJ2.2 block? Hi this may seem like a stupid question, to which I have found no no answer... Presumably because anyone thinking of changing their shortblock would want to go UP in displacement in the process, hence all the 2.2 to 2.5 frankendiscussions... I have an unusual situation because California emissions require that I use an EJ22 block and pre-94 emissions (OBD 1) for my Vanagon conversion. I am building an "as new" motor, to last many long years and have purchased a factory Phase 2 Ej22 crate short block and have had the Phase 1 heads rebuilt and a valve job performed to use as a basis. A 1993 Legacy L donor car and will supply the heads & all the intake & emissions systems as required by CA.. Are there any special considerations to using the phase 1 2.2 heads on the phase 2 block? Specifically: I am aware that the compression will go up and that the engine becomes an interference motor. Have done a test build of the long block, and timing, and everything goes together fine, Intake manifold lines up correctly, etc... BUT... are there any "special" considerations?? Phase one, or Phase 2 head gaskets usable?? or modifications to either? Tweaks or other considerations to correct for the higher compression? (the motor is self adjusting but, to what limits?) Thanks!!! the project: