m20b20 731 head. Large or small port head?

[Five Star 0]

I'm ordering gaskets for a 731 head on a m20b20. Although the supplier doesn't know whether it's a large or small port head.

I've had conflicting information from most places, so I figure I'd ask the experts..

[v8e21dreamer 0]

I know that something on the inlet side of a 731 head is bigger than the 200, but i'm not sure if it's the valves,ports or bothe. The exaust ports will be the same as the 200.

Do you know any one witha spare 731 head?, as I want to upgrade from the 200.

[Five Star 0]

Try ray (Hellbm, forum sponser).