Hey all,

Quick one for you.... You know that small plate that covers the opening in the front passenger side of a B20 head (I forget at the moment whether its a E or F, and in either case it was reworked), right next to the exhaust port for cylinder #1? Any idea what size bolts it uses? My "new" head had neither the plate nor bolts, so I find myself needing to cobble something together (old head was a B18D and uses a different size plate and bolts).

Making a new plate is no big deal since I have the correct gasket to use as a template, so its just a matter of finding correct bolts. They seem to be 12-24, but my 12-24 tap feels awful loose in the hole. M6x1 is fairly close in size and pitch, but won't even start in the hole. In either case I have neither 12-24 nor M6x1 bolts to use, so figured I'd ask here before picking them up.

On a similar note, how about the bolt holes for the injectors? I have similar plans for making plates to cover the ports, but haven't gotten that far yet.

Oh, and any idea what that port in front is for?

Thanks!

-aric.