JK Drag Coefficient?
10-15-2009, 02:17 PM
#27
JK Junkie
10-15-2009, 02:25 PM
#28
JK Jedi
Jason - you're whole post just makes my head hurt...think I need to lay down and take a nap until the spinning stops...sorry but it's the reason I went the Information Technology route and not Engineering 
10-15-2009, 06:17 PM
#29
JK Jedi
Join Date: Oct 2007
Location: Colorado
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It appears they did a lot of little things to improve the C/D of the JK, would love to know the official number though, haven't been able to find it. Some things they did:
More rake to grill and windshield, curve to windshield, integrated fog lights, rear of tub actually narrows inward toward the tailgate, added the (dreaded) airdam, cleaned up the surfaces of the frontal area (compared to the TJ), most of the lines are rounded and curved, again compared to the TJ. I think all of these things help the JK get pretty damn respectable fuel economy compared to the TJ despite being heavier with more frontal area. Obviously the 3.8L is an efficiency factor as well.
More rake to grill and windshield, curve to windshield, integrated fog lights, rear of tub actually narrows inward toward the tailgate, added the (dreaded) airdam, cleaned up the surfaces of the frontal area (compared to the TJ), most of the lines are rounded and curved, again compared to the TJ. I think all of these things help the JK get pretty damn respectable fuel economy compared to the TJ despite being heavier with more frontal area. Obviously the 3.8L is an efficiency factor as well.
10-15-2009, 09:31 PM
#30
JK Super Freak
It appears they did a lot of little things to improve the C/D of the JK, would love to know the official number though, haven't been able to find it. Some things they did:
More rake to grill and windshield, curve to windshield, integrated fog lights, rear of tub actually narrows inward toward the tailgate, added the (dreaded) airdam, cleaned up the surfaces of the frontal area (compared to the TJ), most of the lines are rounded and curved, again compared to the TJ. I think all of these things help the JK get pretty damn respectable fuel economy compared to the TJ despite being heavier with more frontal area. Obviously the 3.8L is an efficiency factor as well.
More rake to grill and windshield, curve to windshield, integrated fog lights, rear of tub actually narrows inward toward the tailgate, added the (dreaded) airdam, cleaned up the surfaces of the frontal area (compared to the TJ), most of the lines are rounded and curved, again compared to the TJ. I think all of these things help the JK get pretty damn respectable fuel economy compared to the TJ despite being heavier with more frontal area. Obviously the 3.8L is an efficiency factor as well.
