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Old 10-10-2017, 09:36 PM   #15
QUICRNU
 
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I have the Kooks 2 Inch primary headers and they do not contact there on my L99, at all. I don't have many suggestions past what was shared, but compared to what I have, I would agree something is off.
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Old 10-10-2017, 10:40 PM   #16
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Disconnect the connection pipe to header that's touching and see if it moves back out from the frame rail. It could be that screwy exhaust pushing it out that you say was welded up kind of whack.
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Old 10-10-2017, 11:49 PM   #17
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Thanks for the reply. The motor mounts look to be ok. I don't see any issue with them just looking at them. I do have a tune by Dynosteve. I loosened all of the clamps today and even pushed against the header to try and move it off the frame and it didn't move. I have to push over on it pretty hard just to get that small piece of exhaust wrap in there to see if it stopped the vibration. I also went back out there to look and it seems to be against the heat shield at firewall also. They just aren't fitting right for some reason.

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Old 10-11-2017, 06:36 AM   #18
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I hace 1 7/8 catless kooks. Clearance was perfect. But i did have to readjust them for the tunnel brace. It was letting the exhaust touch on revs and some idle. May check that. But shouldnt be touching the frame at all. Couldve been a bad cast. Havent heard of one from kooks, but everyone makes mistakes.
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Old 10-11-2017, 08:11 AM   #19
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I have 2inch stainless work primary headers and no contact anywhere. Little close to the steering shaft but doesn't touch.
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Old 10-11-2017, 12:32 PM   #20
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More pics...
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Old 10-12-2017, 08:25 AM   #21
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Curious too, so I just checked mine. Also Kooks 1 7/8's. I have at least 1 to 1"-1 1/2" clearance on both sides from the frame rail. You have an issue with either the headers or the geometry of the frame rails.
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Old 10-12-2017, 08:49 AM   #22
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I checked my 1 7/8" Kooks, at the tightest spot I can slide my fingers between the header tube and fame, approximately 3/4".
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Old 10-12-2017, 03:38 PM   #23
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I'd contact Kooks and send pictures.
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Kooks full 3in exhaust
Texas Speed VVT 3.2 cam kit
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Texas Speed 1.72:1 Ratio LS3 Steel Roller Rocker Arm Set w/ Roller Tip
AEM X-Series OBDII Wideband Gauges (PN#30-0333)
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Old 10-13-2017, 12:20 AM   #24
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I have sent Kooks a message and tried to call a few times. I haven't gotten in touch with anyone yet. I am going to try them again in the morning when I get off work. I just hope they will help me out because that would be a huge loss if they won't replace them.
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