| North East Xterra Club https://www.nexterra.org/forums/ |
|
| cylinder head porting + polishing? https://www.nexterra.org/forums/viewtopic.php?f=51&t=3973 |
Page 1 of 1 |
| Author: | baf6 [ Thu Aug 13, 2009 7:54 pm ] |
| Post subject: | cylinder head porting + polishing? |
dont worry, not attempting this on the X....looking to do a DIY port + polish job on the cylinder heads in my project car (92 dodge stealth V6 3.0 SOHC) wondering if anyone has experience with doing this....its a budget build and im looking to squeeze the most power out of this motor for the least $$$...originally wanted to twin turbo swap it, but thats out of the question... from what i understand, it basically involves smoothing out the combustion chamber, intake and exhaust runners, and the ports on the head and the intake/exhaust manifolds...any input? ideas? best tool(s) for the job? planning on picking up a decent die grinder and some carbide bits, along with polishing tips and maybe some sanding discs? seen quite a few writeups and DIY guides for doing this online....some claim decent power gains, others claim its useless and will destroy your cylinder head....im not too worried about screwing it up, if i do i'll buy a new head (readily available on the 3000gt forums for dirt cheap)... |
|
| Author: | O1SalsaX [ Thu Aug 13, 2009 9:28 pm ] |
| Post subject: | |
The easiest thing to do for some gains is to at least gasket match the ports, both intake and exhaust. Basically tape the gasket to it and trace it onto the head. Then go to town until you get the port opened up to the gasket size. Port match the cylinder heads, intake manifolds, exhaust manifolds (on some you can), even the throttle body can be bored out a bit if you can get a new butterfly machined to match. I never got into cleaning up cylinder heads further than that since I really didn't want to screw them up. LOL Keep in mind that you don't want to touch or come near the valve seat. Otherwise you'll need a 3 angle valve job to fix your mess. Good luck. It'll go quick if they are aluminum heads. I used to port cast iron heads on small block chevys. i.e. LABOR INTENSIVE. ugh |
|
| Page 1 of 1 | All times are UTC - 5 hours |
| Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group http://www.phpbb.com/ |
|