How can I tell if my engine has been ported?
12-23-12, 09:10 PM
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How can I tell if my engine has been ported?
As the title states I'm trying to find out if my engine has been ported and if there is a way to tell without dismantling the engine and inspecting the ports. I know it was rebuilt but do not know if it was just a "stock" rebuild. I took a trip recently to my home town and met up with a friend that has a 91 N/A GXL, mine is a 90 N/A GXL. He has a similar setup to mine, headers, cat delete, to a single side cat back, his is HSK hi-power and mine is Corksport power series. They both have about the same amount of miles since rebuild but mine seems to have more power, and different idle characteristics. I know it's not much to go off of but I figured with the vast knowledge of the forum someone would be able to answer my question or point me in the right direction.
12-23-12, 09:50 PM
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Thank you! I'm planning on installing the Pineapple 5 & 6 port sleeves so I'll check then. I'm not sure what kind of port it could have. It has a very pronounced exhaust cycle. Even with the stock exhaust it was very pronounced and even more so now that it's an unrestricted system.
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12-24-12, 12:39 AM
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I'm going to pick up a vacuum pressure tester on Friday and I'll report my findings then. But in the mean time I took a quick video of my car idling. I know it's black but it was dark when I took it.
<iframe width="420" height="315" src="http://www.youtube.com/embed/4i0ohR7aswg?rel=0" frameborder="0" allowfullscreen></iframe>
<iframe width="420" height="315" src="http://www.youtube.com/embed/4i0ohR7aswg?rel=0" frameborder="0" allowfullscreen></iframe>
brap brap baby!
12-25-12, 01:33 PM
#16
the best cheap way is to take off the intake manifolds and stick a small mirror that you can bend into the intake port, shine some light in there and look at the port. You can also try and feel the shape of the port with your fingers. If the ports are "sharp", its still a stock port. If you see that the bowl has been smoothed out, its likely that its also ported.
12-25-12, 04:04 PM
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As the title states I'm trying to find out if my engine has been ported and if there is a way to tell without dismantling the engine and inspecting the ports. I know it was rebuilt but do not know if it was just a "stock" rebuild. I took a trip recently to my home town and met up with a friend that has a 91 N/A GXL, mine is a 90 N/A GXL. He has a similar setup to mine, headers, cat delete, to a single side cat back, his is HSK hi-power and mine is Corksport power series. They both have about the same amount of miles since rebuild but mine seems to have more power, and different idle characteristics. I know it's not much to go off of but I figured with the vast knowledge of the forum someone would be able to answer my question or point me in the right direction.
12-25-12, 05:07 PM
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the best cheap way is to take off the intake manifolds and stick a small mirror that you can bend into the intake port, shine some light in there and look at the port. You can also try and feel the shape of the port with your fingers. If the ports are "sharp", its still a stock port. If you see that the bowl has been smoothed out, its likely that its also ported.
