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Header Help?!?!?!?

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Old 03-19-2007, 07:14 PM
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Default Header Help?!?!?!?

I just installed some pacesetter lt's and a ory. There a weird sound coming from the drivers side and I'm guessing its an exhaust leak?? kinda sounds like a spark plug knock,except louder, what could be causing this?? I have metal gaskets if that matters.
Old 03-19-2007, 07:17 PM
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could be a slight exhaust leak. remember though, valvetrain noise will be significantly louder with headers because of the thinner tubing walls. so you may not have a leak at all. ls1s are noisy motors to begin with (lifters, injectors, piston slap) so you may just be hearing valvetrain noise that is just more pronounced now that u have headers. my $.02
Old 03-19-2007, 07:19 PM
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just to make sure, go back and tighten down all your bolts, make sure the plugs are all the way in and all your plug boots are on good
Old 03-19-2007, 07:24 PM
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Holy **** that was fast!!! Performance wise the car feels fine, doesnt feel slower.
Maybe its just the headers, thanks Tainted.. i will go back and make sure the bolts are tight and plug wires are also. Man this web site kicks ***
Old 03-19-2007, 07:35 PM
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Originally Posted by FNQUIKWS6
I just installed some pacesetter lt's and a ory. There a weird sound coming from the drivers side and I'm guessing its an exhaust leak?? kinda sounds like a spark plug knock,except louder, what could be causing this?? I have metal gaskets if that matters.

Try to check the K&N filters maybe its used up already that is why its producing unwanted noise.Also check out the treads,it could possibly be the answer.
Old 03-19-2007, 07:42 PM
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Originally Posted by raymundojr
Try to check the K&N filters maybe its used up already that is why its producing unwanted noise.Also check out the treads,it could possibly be the answer.
Mods ban this guy.
Old 03-19-2007, 07:44 PM
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WTF is ray talkin about?? SPAMMER!!
Old 03-19-2007, 07:46 PM
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lmao thats more random than a midget ******* a horse
Old 03-19-2007, 07:49 PM
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Originally Posted by raymundojr
Try to check the K&N filters maybe its used up already that is why its producing unwanted noise.Also check out the treads,it could possibly be the answer.
or maybe its my windshield, all the bugs on it are causing serious wind resistance and thats the noise .. just needs a good cleaning
Old 03-19-2007, 08:54 PM
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Just throwing this out your sure it isn't header ory y-pipe hitting floorboard or the k-member.
Old 03-19-2007, 09:14 PM
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actually my y-pipe is hitting the floor, why does is do that?? do i need a bumpstop for the y??
Old 03-19-2007, 09:17 PM
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Originally Posted by FNQUIKWS6
actually my y-pipe is hitting the floor, why does is do that?? do i need a bumpstop for the y??
Polymounts will take care of that issue.
Old 03-19-2007, 09:59 PM
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I was going to say it was hitting the floorboard. Thats what mine did. I couldnt get it to stop and just bought true duals from tsp. The bump stop hanger wouldnt mount correctly and didnt do anything. The only time it stopped is when I wedged a piece of rubber exhaust hanger in there. Once it melted it started banging again.

The knocking is most likely robbing you of performance because your knock sensor is picking up the vibrations/knock and retarding the timing.




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