ezzzzzzz Posted June 2, 2008 Share Posted June 2, 2008 This is a P90a head that I'm using with Justin's custom intake flange. Since it is for a mild SC project I didn't go crazy porting. The guides were pushed back for working room. Those will be replaced with stock cast iron pieces. The seats will also get replaced. The head will get shaved as little as possible. Hopefully, it won't require enough metal removal to warrant shimming the cam towers. Any constructive input is welcome. Quote Link to comment Share on other sites More sharing options...
1 fast z Posted June 2, 2008 Share Posted June 2, 2008 Taking the roof around the ex guide yeilds about 4-7% increase in ex flow. You need to raise the intake ports even more, you will see 10+% by doing so. Then there is all the other little tricks I cant tell SOME pics on what I am talking about, this is an old P90 I did. Quote Link to comment Share on other sites More sharing options...
Careless Posted June 3, 2008 Share Posted June 3, 2008 nice work guys. Quote Link to comment Share on other sites More sharing options...
Noddle Posted June 3, 2008 Share Posted June 3, 2008 1 fast z, do you have any high res picture of what you have show above, I would love to have a better look at your work, unless it a trade secret. Nigel Quote Link to comment Share on other sites More sharing options...
naviathan Posted June 3, 2008 Share Posted June 3, 2008 Search the forum, 1 fast z has posted quite a few shots of his port work. It really is a thing of beauty and I wish he would pass on some of his secrets. There's even some pics of cross sectioned heads to show how much material you can take out where in the ports. Quote Link to comment Share on other sites More sharing options...
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