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post #1 of 17 Old June 18th, 2016, 07:19 PM Thread Starter
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Fluttering noise after revs

Opened the hood an reved it a few times and it's making a flutter noise after the revs.. Any ideas? I do desperately need an oil change but I don't think that has anything to do with it. I did replace the intake manifold about a month ago too... Have to find a way to link the video
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post #2 of 17 Old June 18th, 2016, 07:23 PM Thread Starter
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post #3 of 17 Old June 20th, 2016, 10:28 AM
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So weird - did you torque the manifold to spec when it comes to torque and in the right pattern as outlined on the instructions that came with it?

http://imageshack.com/a/img832/3492/odessadone.jpg

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post #4 of 17 Old June 20th, 2016, 10:29 PM Thread Starter
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No I didn't torque it to spec, and that's a negative on the pattern. Is it really that important? It almost sounds like an exhaust leak at the header like back pressure escaping
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post #5 of 17 Old June 20th, 2016, 10:29 PM Thread Starter
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No I didn't torque it to spec, and that's a negative on the pattern. Is it really that important? It almost sounds like an exhaust leak at the header like back pressure escaping
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post #6 of 17 Old June 21st, 2016, 06:18 AM
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Quote:
Originally Posted by barnz01gt View Post
No I didn't torque it to spec, and that's a negative on the pattern. Is it really that important? It almost sounds like an exhaust leak at the header like back pressure escaping
For the upper intake to properly seal to the motor yes. There is a reason they included that nice full blown picture outlining the tightening pattern and torque spec in the kit lol

A good torque wrench will be your best friend with these motors.

I typically like to back step after doing mods. If it didn't make the sound prior to swapping intakes, you might have found your issue.

Did you use a Dorman intake or frpp?
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post #7 of 17 Old June 21st, 2016, 06:23 AM
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[QUOTE=TheOdessa;11558449]
Quote:
Originally Posted by barnz01gt View Post
No I didn't torque it to spec, and that's a negative on the pattern. Is it really that important? It almost sounds like an exhaust leak at the header like back pressure escaping
For the upper intake to properly seal to the motor yes. There is a reason they included that nice full blown picture outlining the tightening pattern and torque spec in the kit lol

A good torque wrench will be your best friend with these motors, or just in general. I learned the hard way on my previous vehicle that there is a reason torque specs are established.

I typically like to back step after doing mods. If it didn't make the sound prior to swapping intakes, you might have found your issue.

Did you use a Dorman intake or frpp? If you did the frpp, did you get a new gasket set? If I remember right Dorman includes the gaskets but that intake sucks, literally. It caused all kinds of problems so I removed the Dorman and bought a frpp. I returned the Dorman
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post #8 of 17 Old June 21st, 2016, 06:24 AM
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Stupid app. I tried to edit my original post. My second post has my final draft.
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post #9 of 17 Old June 21st, 2016, 04:59 PM Thread Starter
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No I bought a PI intake off of someone on Facebook, where can I find these torque specs you speak of ?
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post #10 of 17 Old June 21st, 2016, 05:00 PM Thread Starter
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I reused the intake gaskets even though they weren't the best.....
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post #11 of 17 Old June 21st, 2016, 05:27 PM
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post #12 of 17 Old June 21st, 2016, 07:02 PM
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Originally Posted by barnz01gt View Post
I reused the intake gaskets even though they weren't the best.....
OMG killing me!
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post #13 of 17 Old June 22nd, 2016, 12:58 PM Thread Starter
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Thank you sir
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post #14 of 17 Old June 22nd, 2016, 12:58 PM Thread Starter
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Quote:
Originally Posted by TheOdessa View Post
Quote:
Originally Posted by barnz01gt View Post
I reused the intake gaskets even though they weren't the best.....
OMG killing me!
Haha I can't help myself
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post #15 of 17 Old June 22nd, 2016, 01:10 PM
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When I had replaced my lower intake I had a similar noise, which turned out to be the egr tube. I just used a giant crescent wrench to tighten it more and the sound went away.

In your case though, you might have to take it back apart and put a new gasket in, if you get an intake leak that close to the heads your car is gonna run like crap.

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post #16 of 17 Old June 22nd, 2016, 08:30 PM
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Originally Posted by poweredpony69 View Post
In your case though, you might have to take it back apart and put a new gasket in, if you get an intake leak that close to the heads your car is gonna run like crap.
This.

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post #17 of 17 Old June 23rd, 2016, 08:21 AM
6 Cylinduh, Really Bruh?
 
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Originally Posted by barnz01gt View Post
Haha I can't help myself
Sorry I posted that on the phone.

I should have said when you replace these upper intake manifolds there's a lot of little steps that need to be taken to prevent large issues.

Do not reuse the old gasket. Fel Pro gaskets work fine from Advance Auto.
I personally put high temp copper gasket around the ports where coolant passes through.
When running the bolts down, make sure you do them in order and to the right torque spec. This is key if you want it to seal evenly and correctly.
Go back a week later to recheck the torque on each bolt

http://imageshack.com/a/img832/3492/odessadone.jpg

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