Have been through the site and finally some people with some interest in pushing carbs. I am a begginer with the Civic and would like to ask some questions

- The SI head that mates to a 1.5 EW2 engine, what are the gains, are the valves, cam, springs better than the EW2 head.

- Will the factory EW2 valve train not handle the increased load that would result from a double weber with exaust headers upgrade setup.

- Did the EW3 and EW4 SI engines ship Fuel injected only.

- Is it true that the aim is to cash in on the better valve train that the SI head offers and then rip the FI intake manifold off and put the EW2 one.

- What does the SI head allow the engine to rev to

Can you guys suggest the best way for me to go, my EW2 head is destroyed, an exaust valve bent from overheating(girlfriend drove it to death) I now have to get a new head.