head/intake porting who has done this???
03-07-2009, 01:48 PM
#1
head/intake porting who has done this??? on there own free time to gasket match the intake and heads (int. & exh) sides...to just open them up to the gasket and open the inside of the ports a bit....nothing to crazy but just deburr all the jagged edges inside the ports and clean it up a bit...if so does anyone have actual dyno proven gains of a before and after or flow charts of there heads before and after....just wondering if any one has solid proof of actual gains just from a gasket match and blending the ports..
Not work gasket matching. Polishing could help though, yes. 
03-13-2009, 10:45 AM
#6
If this is your first time attempting any type of port work on a cylinder head, do NOT attempt it on the heads you intend to use on your build. Gasket matching is not beneficial by itself. If you want to attempt this, you need to do immense amounts of reading, researching, practicing on junk heads, and more practice. Jump right in with no experience or practice, and you'll trash your heads before you know it.
Polishing does not help either. In fact, polishing intake ports is a very VERY bad idea (exhaust is a different story). You want the intake runner to have a uniform rough texture to promote the function of the boundary layer near the runner surface.
Polishing does not help either. In fact, polishing intake ports is a very VERY bad idea (exhaust is a different story). You want the intake runner to have a uniform rough texture to promote the function of the boundary layer near the runner surface.
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03-13-2009, 03:00 PM
#8
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Like Ramair said, don't polish the intake ports.
As for doing it yourself, just get a few books on basic porting, your going to find the main power gains are in the bowls & a VG valve job with back-cutting the valves, get a spare set (or at least one) junk head & practice, find someone with a flow bench, so you can see where the #s are, its not all about flow #s, where the #s are is also very important, so read up on it 1st.
As for doing it yourself, just get a few books on basic porting, your going to find the main power gains are in the bowls & a VG valve job with back-cutting the valves, get a spare set (or at least one) junk head & practice, find someone with a flow bench, so you can see where the #s are, its not all about flow #s, where the #s are is also very important, so read up on it 1st.