utvolman99 Posted April 11, 2002 Share Posted April 11, 2002 Okay guys, as some of you know I have purchased a new pair of Dart Iron Eagle 215cc heads. I am wondering if I should attempt to do any head porting on my own and how much I should do? One thing I would like to do is smooth the combustion chambers to help prevent detonation. Im using flat top pistons with reliefs that should put me somewhere between 9.7 and 10:1 depending on who you ask. I was planning on using the information from the standard abrasives web sight. Additionally I was wondering if I should attempt to do a little clean up in the bowl area and gasket match my intake and exhaust runners? The last thing I want to do is mess up these heads! At the same time I dont want to neglect the chance to make them even better! Any advice would be great! Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted April 11, 2002 Share Posted April 11, 2002 carefully polishing the combustion chamber and cleaning up the area under the valve are great ideas IF YOU WORK SLOWLY AND CAREFULLY AND HAVE A JUNK PAIR OF VALVES INSTALLED WHEN YOUR CLOSE TO THE VALVE SEATS TO PROTECT THEM but those heads are so good right out of the box the total amount of work necessary is minimal. read this, while not the same heads the info is good:D remember your NOT TRYING TO INLARGE OR TOTALLY RESHAPE THE PORTS,you are trying to remove casting flaws and smooth and blend rough edges! http://www.ws6transam.org/ported.html http://www.sa-motorsports.com/diyport.htm http://www.sa-motorsports.com/diyguide.shtm http://www.sa-motorsports.com/ Quote Link to comment Share on other sites More sharing options...
Mike C Posted April 12, 2002 Share Posted April 12, 2002 Buy David Vizard's book. It is a wealth of info on how you can do a first rate home port job. Quote Link to comment Share on other sites More sharing options...
John Scott Posted April 12, 2002 Share Posted April 12, 2002 I had a similar question on a drag race forum. I was warned that a good set of heads could be turned into scrap metal real fast by the unskilled. A bowl clean up and port match is one thing. A flow bench and experience is needed for getting more cfm throughout the valve lift. JS Quote Link to comment Share on other sites More sharing options...
utvolman99 Posted April 12, 2002 Author Share Posted April 12, 2002 a combustion chamber and bowl clean up job is all I had in mind. As grumpy said these heads already flow pretty good. I have yet to crack them open so I dont even know what the bowl looks like. I would say that the short radias is about as good as it is going to get. I will maybe work on the valve boss and just smooth the intake and exhaust runners in addition to polishing the combustion chamber. Quote Link to comment Share on other sites More sharing options...
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