Chris I have access to another head that has been oringed and is completely stock that I will wiegh it against. I will post the wieghts when I get this one completed. I am trying to find a local shop to flow test both of them for comparison. Not shown are the new pushrods I bought from Source Automotive they are 40 percent lighter than stock. Too bad it isn't possible to machine 40 percent of the weight off of the head.
Durability problems? Don't understand why that would be an issue. I will static test the plenum with 125# of pressure for a couple days after it is welded back on.
Jim, lol yeah maybe so, on the other hand it maybe a myth buster. I plan on using the same ole turbos so I have somewhat of a ref. I did utilized a few local top builders for input/help which had me debating making a set of larger valves. If nothing else I have ensured #6 now has the same access to air as the other cylinders.
kxhonda, you miss understand what I wrote above. A couple chrome moly thin walled tubes where pressed in. The head does not have them in its stock form.
What used to be a dime diameter is now a penny.
Shows how much cylinder 6 aft port is opened.
This pic is a good example of how much material is removed.
Doing the peace sign via the exhaust ports
Shows that so much material was removed that chrome moly thin wall tubing was pressed in as pushrod liner.
Shows how much material was removed from exhaust ports
Blurry pic showing roof of intake 
Pic of porting in progress
Pic of same port later that day. lol
Pic shows the water jacket plug that has to be installed prior to reinstalling air plenum. Note that the air restriction that is caused by the water jacket passage way/plug to feed cyclinder 6 has been milled allowing aft port of #6 cylinder to breath as well as the front port. Pic 3 in prior reply above is what this area now looks like.
