G35 Coupe V35 2003 - 07 Discussion about the 1st Generation V35 G35 Coupe

Whining Noise After Plenum Spacer Installation... PLEASE HELP

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Old Oct 25, 2010 | 02:12 AM
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6MT G35 KS's Avatar
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Whining Noise After Plenum Spacer Installation... PLEASE HELP


If anyone has any questions or comments, please let me know
 
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Old Oct 25, 2010 | 02:19 AM
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air leak? check clamps on intake tube. Not really sure what else it could be i've never heard of this.
 
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Old Oct 25, 2010 | 03:36 AM
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Thanks fastgkid. We fixed the problem. The rubber piece under the oil cap was trapped inbetween the gasket and the cover. So you were correct! air leak! Heres a pic for people if they stumble upon the same problem

Notice: Pic is after problem was fixed. Rubber piece is tucked under to simulate what it looks like.
 
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Old Oct 25, 2010 | 07:30 PM
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i didn't run into that problem. I also installed my MREV and plenum today. One of my coolant valves wasn't connected and it started leaking smoking underneath my hood. If you ever smell a fruity odor with white smoke it is coolant. Anyways got it solved and MREV2+5/16 spacer gave me noticeable gains in the mid range. It did make the engine sound a little more aggressive.
 
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Old Oct 25, 2010 | 07:34 PM
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^^ Agree installed my MREV and spacer the other day, I thought it was gonna be harder then it actually was. Also noticed the gains on the ol butt dyno. Very happy with it.
 
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Old Oct 25, 2010 | 11:08 PM
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Yea once I figured the problem I felt like an idiot as it was pretty obvious if I would have looked closer...

I purchased the 5/16 copper iso thermal spacer and only had time to install everything but the copper throttle body piece, as you can see I ran into problems late last night. But after driving it around last night and today it is definitely noticeably more aggressive sound and can notice low-mid range power increase. Well worth the upgrade.

Also, on a side note motordyne's customer service is great as I had a question about installing the copper throttle body piece so I gave their tech support line a call today and talked to them and they gave me a bunch of great info/more detailed instructions on how to install that part.
 
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Old Oct 26, 2010 | 12:14 PM
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Wow that would have been very annoying driving around with that whistle. haha
 
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Old Oct 27, 2010 | 08:07 PM
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How do you feel the iso spacer? Do you feel any difference? Does it really keep the top and bottom plenum cool?
 
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Old Oct 27, 2010 | 08:13 PM
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I've got to check on that. I ran into a problem after installing my lower intake manifold. Losing a lot of coolant in just one day. Checked for leaks and there are none. Had a compression leak test done and everything was fine. Could be a blown head gasket? Anyone got any ideas? Theres no smoke from the tail pipes. Im also getting sweet odor smell which hasn't gone away. and theres some audible hissing noise from my rear end.
 
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Old Oct 27, 2010 | 10:00 PM
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this is how threads should be like...videos and pictures..
good deal..
 
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Old Oct 27, 2010 | 11:27 PM
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Originally Posted by Pedrog35
this is how threads should be like...videos and pictures..
good deal..
Thanks thats what I think too, some people post a problem with no vid or pics and its hard know without a visual/sound, and then they fix problem and dont let anyone know how...

I just wanted to show people what my problem was incase they run into the same problem, and what my solution was...
 
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Old Oct 28, 2010 | 12:35 PM
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Originally Posted by 6MT G35 KS
Thanks fastgkid. We fixed the problem. The rubber piece under the oil cap was trapped inbetween the gasket and the cover. So you were correct! air leak! Heres a pic for people if they stumble upon the same problem

Notice: Pic is after problem was fixed. Rubber piece is tucked under to simulate what it looks like.
When I added my MREV2 and spacer, I removed the rubber gasket around the oil filler tube completely.
 
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Old Sep 23, 2011 | 10:03 PM
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Guys I got the exact same problem I checked all the clamps and hoses tightened all the bolts until one actually snapped (top left ) and the squeak is still there what should I do ?
 
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Old Sep 24, 2011 | 02:03 AM
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Are you using a torque wrench? And in the correct units, ft lbs vs in lbs.... Should not be snapping the plenum bolts off. Did you use any sealer when putting the spacer in? What brand spacer?? Details.
 
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