johnceggleston Posted April 2, 2014 Share Posted April 2, 2014 (edited) two questions about the 95 - 96 ej22: 1/ if you remove the rocker assembly off of the right side head, can it be swapped on to the left side head as is without reassembly?? or are they specific to one side? 2/ what happens if you bolt ej18 (95) heads onto an ej22 block (96)? compression change? power loss? EGR may be a slight issue, but there is always the work around. i have both sets of heads, 22s and 18s, but the ej18s are dual port. i'm just wondering how big a mistake it would be. thanks, je Edited April 2, 2014 by johnceggleston Link to comment Share on other sites More sharing options...
Fairtax4me Posted April 2, 2014 Share Posted April 2, 2014 Rocker assemblies are the same on each side. You CAN swap ROLLER rocker assemblies. You can NOT swap tappet style rockers. Tappet rockers have to stay matched with the cam. As far as I know there isn't any difference between 22 and 18 heads. If you have a graduated cylinder(or liquid measuring cup), you can roughly measure the volume of the combustion chambers. Measure the valve diameter with a mic or fine ruler. Link to comment Share on other sites More sharing options...
apintonut Posted April 2, 2014 Share Posted April 2, 2014 1.8 heads on a 2.2 block = higher completion Link to comment Share on other sites More sharing options...
86BRATMAN Posted April 2, 2014 Share Posted April 2, 2014 1.8 heads on a 2.2 block = higher completion myth. Link to comment Share on other sites More sharing options...
idosubaru Posted April 2, 2014 Share Posted April 2, 2014 sure, bolt EJ18 heads to EJ22 block, i can't imagine worrying about power difference on those small output engines. you can likely adjust compression by choosing a gasket thickness if you're really worried about it from cometic or six star, one of them offers varying thickness headgaskets. Link to comment Share on other sites More sharing options...
ivans imports Posted April 2, 2014 Share Posted April 2, 2014 Roller cam - roller rockers hydro cam - hydro rockers cam must match rockers. I find the single ex 2.2 makes more power and low end grunt. Duel port revs higher and better at high rpms Link to comment Share on other sites More sharing options...
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