1uzfe head specs?

[ando]

Hey there im currently building a 1uzfe 94 twin turbo engine for my jetboat, have cut a head open through the ports to see how far I can take them out, but before I attack my heads ill get a plan for the valve situation ,has anyone measured the 3uzfe valves to see if they are interchangeable with the 1uzfe as they are bigger ,I see that the 2jzgte valves are similar and slightly larger in the exhaust but has anyone successfully installed a set of these, any help be much appreciated
Thanks ando

 

[20vseven]

Try talking to Dave Rosewarne at Cylinder Head Specialists. He builds big hp heads for stockcar motors