Whistling noise after plenum/TB install?

uhoh5.0

Founding Member

Mar 14, 2002

354

0

17

Montgomery, AL

Jul 29, 2006

#1

• Jul 29, 2006

• #1

I installed a ported and polished FRPP 70mm TB and a ported/polished factory plenum and now I get a whistle at part throttle. I know this thing is sucking in way more air now, as I can feel the difference in power and I can hear my K&N gasping for air, but the whistle has me puzzled? The ford TB has a little hole in the blade, and the factory one didn't. I don't know if its the angle of the throttle blade creating turbulence and a whistle as it passes thru that hole or if there is some vacuum leak or something. I've heard of other people experiencing this but I just wondered if and what the fix is??? Don't say accufab either

 

DropTopPony

Noob Slayer

Founding Member

Aug 13, 2002

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48

south jersey

Jul 29, 2006

#2

• Jul 29, 2006

• #2

mine whisteled (c&l) and i checked for leaks....i liked it. Alot of peoples whistle.

 

jivepepper

Founding Member

Jun 19, 2002

776

5

18

Under a Sombrero. in WV.

Jul 29, 2006

#3

• Jul 29, 2006

• #3

Mine did a little. I think mine it was the way the air went across the edge of the throttle plate during part throttle.

 

P

Pennywise2

Banned

May 16, 2006

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Jul 30, 2006

#4

• Jul 30, 2006

• #4

DropTopPony said:

mine whisteled (c&l) and i checked for leaks....i liked it. Alot of peoples whistle.

Click to expand...

I also have a C&L plenum on my car and I get a whistle at part throttle
and below.I also checked for leaks and I didn't have any.
I know my engine is getting more CFM's but, I have no clue where
the sound is coming from you got me their.
The plenums that are notorious for whistling are the C&L,
Dragon,Accufab,and Trickflow plenums.
I think the whistle sound is cool though.

 

uhoh5.0

Founding Member

Mar 14, 2002

354

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17

Montgomery, AL

Jul 30, 2006

#5

• Jul 30, 2006

• #5

Jivepepper,
I went to school in Mo'town! Small world!

 

streethorse

15 Year Member

Oct 8, 2005

1,042

6

58

Dallas Texas

Jul 30, 2006

#6

• Jul 30, 2006

• #6

I also have a 70mm Ford Racing TB, but w/C&L Plenum, I had the set up
on 2 different stangs no whistle at all. I put a new gasket each time,
Be careful to tourqe down the bolts evenly and not overly.

 

Duke309

Member

Oct 15, 2005

90

0

6

Orlando, FL

Jul 30, 2006

#7

• Jul 30, 2006

• #7

my friend has a 70mm PP tb and plenum and it whistles when you slightly open the TB, its just the air getting sucked in through a small opening.

 

jivepepper

Founding Member

Jun 19, 2002

776

5

18

Under a Sombrero. in WV.

Jul 30, 2006

#8

• Jul 30, 2006

• #8

uhoh5.0 said:

Jivepepper,
I went to school in Mo'town! Small world!

Click to expand...

\

Cool should come back and visit.

 

Gearbanger 101

Straight Outta Locash

20+ Year Stangneter

Aug 10, 2002

9,457

1,377

234

Ontario, Canada

Jul 30, 2006

#9

• Jul 30, 2006

• #9

uhoh5.0 said:

I installed a ported and polished FRPP 70mm TB

Click to expand...

Why would you port and polish your throttle body?