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rattle/buzz at partial throttle

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Old Jul 7, 2003 | 04:13 PM
  #1  
Musical253's Avatar
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From: Tacoma, Wa, US
Default rattle/buzz at partial throttle

I have a 92 Si w/
H22a(JDM 97 lude)
Greddy 4-2-1 headers,Greddy EVO exhaust
AEM intake
Apexi V-AFC

At around 2000-3000 rpm and 25-40% throttle my engine makes a buzzing sound that I feel under my feet. It feels like the exhaust is hitting something. Has anyone experienced this problem?
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Old Jul 7, 2003 | 04:47 PM
  #2  
Sticky Tires's Avatar
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From: Hamburger Hill, Kills
Default Re: rattle/buzz at partial throttle (Musical253)

it could be either your cat. converter. inspect the flanges on your header for cracks. heatshield cracking when hot? time for a DIY inspection.
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Old Jul 8, 2003 | 10:03 AM
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From: northern DRUNKit, ma
Default Re: rattle/buzz at partial throttle (StickyTire)

yeah i have this problem too i have a 94 vtec, that buzz/ rattle pisses me off and its only like at 2500 rpm but doesn't matter what throttle position im at, i know mine is my exhaust . mine is rusting out
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Old Jul 8, 2003 | 10:21 AM
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JBG's Ferio's Avatar
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From: Charleston, WV
Default Re: rattle/buzz at partial throttle (prelittlelude)

Could it be rubbing the heatshield?


Modified by J B G at 1:12 PM 7/9/2003
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Old Jul 8, 2003 | 10:25 AM
  #5  
Musical253's Avatar
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From: Tacoma, Wa, US
Default Re: rattle/buzz at partial throttle (prelittlelude)

I asked one of my buddies and he said maybe some poly engine mounts. That way the engine won't move during exceleration. I'm not sure if that'll work, but its a good theory. They are inexpensive so thats my next move. Lemme know what the deal is...I really want to get this fixed.
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Old Jul 9, 2003 | 08:40 AM
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From: The Hills Of WV
Default Re: rattle/buzz at partial throttle (J B G)

John have you ever looked under your car? The LCA's are a good 5-6 inches from the exhaust.

EDIT: my guess. heat sheild.
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Old Jul 9, 2003 | 08:54 AM
  #7  
Musical253's Avatar
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From: Tacoma, Wa, US
Default Re: rattle/buzz at partial throttle (TravisEK)

LCA? With the headers I have(Greedy 4/3/1) its large and only an inch and some change from a couple of spots. Would I still have a heatshield with the headers or would that just be with the stock exhaust? Sorry for my ignorance, everybody has to start somewhere... -Josh
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Old Jul 9, 2003 | 09:18 AM
  #8  
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From: Charleston, WV
Default Re: rattle/buzz at partial throttle (Musical253)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Musical253 &raquo;</TD></TR><TR><TD CLASS="quote">LCA? With the headers I have(Greedy 4/3/1) its large and only an inch and some change from a couple of spots. Would I still have a heatshield with the headers or would that just be with the stock exhaust? Sorry for my ignorance, everybody has to start somewhere... -Josh</TD></TR></TABLE>

It's not the lca, I wasn't aware of the large distance they are from everything. Check your heatshield like Travis said.
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Old Jul 9, 2003 | 10:15 AM
  #9  
TravisEK's Avatar
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From: The Hills Of WV
Default Re: rattle/buzz at partial throttle (Musical253)

I'm talking about the exhaust. It's not unusual for aftermarket exhausts to rub the heatsheilds. I doubt it's your header making the rattling, my guess is the exhaust on a heatsheild. You can either remove them, or cut away at them. You probably won't be able to eliminate the problem, but at least you can lessen it.
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