• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

Accufab plenum problems!!! need help

  • Thread starter Thread starter stang976
  • Start date Start date Aug 30, 2004
  • 1
  • 2
Next
1 of 2 Next Last

stang976

New Member
Apr 13, 2004
853
0
0
Westchester, NY
Aug 30, 2004
#1
  • Aug 30, 2004
  • #1
ok so i finally got motivated to install my: accufab TB/plenum combo and my blower when i came across 2 horrible problems:
1) when i removed the stock plenum i did not see the original gasket (could it have dropped in to the manifold?)
2) when bolting the factory (i think its the EGR??) to the plenum with Accufabs supplied gaskets and original ford screws: the piece would not go tight against the new plenum (i was thinkin the screws were too long) so when i tried to turn the bolt (8mm) in a little farther, the head of the bolt snapped and i was left with the headless screw stuck inside the plenum. My friend is drilling the bolt out for me, but i was wondering on WTF to do on my second attempt. PLEASE HELP!!!!
 

NasaGT

Founding Member
Sep 19, 2002
1,993
2
49
Virginia
Aug 30, 2004
#2
  • Aug 30, 2004
  • #2
Use the Accufab supplied screws! Thats what I used, no problems.

Also, you may want to try to use vice-grips to remove that screw rather than drilling it out.
 
S

sacstoy02gt

New Member
Jan 5, 2004
124
0
0
Waukesha, WI
Aug 30, 2004
#3
  • Aug 30, 2004
  • #3
You're probably going to have to shim the bolt on the egr with some washers. It's not pretty, but it will work.
The plenum should have no gasket where it meets the manifold, there should be an o-ring though(blue/green in color). See pic of mine removed(o-ring is the blue/green oval):
 

stang976

New Member
Apr 13, 2004
853
0
0
Westchester, NY
Aug 30, 2004
#4
  • Aug 30, 2004
  • #4
NasaGT said:
Use the Accufab supplied screws! Thats what I used, no problems.
Click to expand...

ahhh hah. accufab did not provide screws in my kit. that solves that problem. any thoughts on the magically disappearing gasket?
 
R

Rocketman

New Member
Apr 20, 2004
730
0
0
SoCal
Aug 30, 2004
#5
  • Aug 30, 2004
  • #5
The Plenum to manifold gasket is a built in rubber gasket, no need to change or remove. As far as the EGR bolts are concerned, I used the original Ford bolts and the Accufab supplied gasket with no problems.
 

stang976

New Member
Apr 13, 2004
853
0
0
Westchester, NY
Aug 30, 2004
#6
  • Aug 30, 2004
  • #6
sacstoy02gt said:
You're probably going to have to shim the bolt on the egr with some washers. It's not pretty, but it will work.
The plenum should have no gasket where it meets the manifold, there should be an o-ring though(blue/green in color). See pic of mine removed(o-ring is the blue/green oval):
Click to expand...

thanks for the info! im gonna call accufab and see if i can get the screws that were missing in my kit. no plenum gasket huh? thats what i wanted to hear. thanks again for the info!
 

stang976

New Member
Apr 13, 2004
853
0
0
Westchester, NY
Aug 30, 2004
#7
  • Aug 30, 2004
  • #7
Rocketman said:
As far as the EGR bolts are concerned, I used the original Ford bolts and the Accufab supplied gasket with no problems.
Click to expand...

see that i find hard to believe. when i put the original bolts up to the EGR/plenum they looked a little too long to begin with. When i started tightening the bolts, they felt really tight but i still had a lot more to go to hold the EGR in place. i should have used washers i guess.
 

onesticker

New Member
Feb 19, 2003
222
0
0
Jacksonville,FL
Aug 30, 2004
#8
  • Aug 30, 2004
  • #8
Let me know how much additional power you get from that when you are done. I am curious to see how it reacts with the blower.
 

stang976

New Member
Apr 13, 2004
853
0
0
Westchester, NY
Aug 30, 2004
#9
  • Aug 30, 2004
  • #9
onesticker said:
Let me know how much additional power you get from that when you are done. I am curious to see how it reacts with the blower.
Click to expand...

absolutley. i will post dyno sheets as soon as i get the blower in and have it tuned.
 
M

mnrlgray02

New Member
Aug 4, 2004
7
0
0
missouri
Aug 30, 2004
#10
  • Aug 30, 2004
  • #10
I actually had to hand tap the holes a little deeper to get the bolts to fit. Kinda PITA but it worked and then fit flush.
 

stang976

New Member
Apr 13, 2004
853
0
0
Westchester, NY
Aug 30, 2004
#11
  • Aug 30, 2004
  • #11
mnrlgray02 said:
I actually had to hand tap the holes a little deeper to get the bolts to fit. Kinda PITA but it worked and then fit flush.
Click to expand...

do you think i could just cut the bolts a little shorter????
 
M

mnrlgray02

New Member
Aug 4, 2004
7
0
0
missouri
Aug 30, 2004
#12
  • Aug 30, 2004
  • #12
I can't see why not... Just everytime I try to cut anything I f*@$ it up
 

stang976

New Member
Apr 13, 2004
853
0
0
Westchester, NY
Aug 31, 2004
#13
  • Aug 31, 2004
  • #13
update: spent hours at my buddies house on the drill press with this POS trying to get the bolt out. after about 2 hours (breaks included) we hollowed it out, heated it up real good, and tried extracting it but with no luck. eventually we just tapped it down but to a smaller bolt size. now i must go to the hardware store and pick up the correct bolts for this mystery hole.
 

Premium Speed

New Member
Apr 22, 2003
1,006
0
0
Houston, Texas
Aug 31, 2004
#14
  • Aug 31, 2004
  • #14
that sucks...mine bolted right up with no problems and i used the factory bolts. mine came with new IAC bolts, not EGR.
 

onesticker

New Member
Feb 19, 2003
222
0
0
Jacksonville,FL
Aug 31, 2004
#15
  • Aug 31, 2004
  • #15
stang976 said:
update: spent hours at my buddies house on the drill press with this POS trying to get the bolt out. after about 2 hours (breaks included) we hollowed it out, heated it up real good, and tried extracting it but with no luck. eventually we just tapped it down but to a smaller bolt size. now i must go to the hardware store and pick up the correct bolts for this mystery hole.
Click to expand...
This is not very encouraging. I want to do this mod but not with the headaches you're having. I wonder if the C&L or Trickflow would be any easier to install?
 

stang976

New Member
Apr 13, 2004
853
0
0
Westchester, NY
Aug 31, 2004
#16
  • Aug 31, 2004
  • #16
onesticker said:
This is not very encouraging. I want to do this mod but not with the headaches you're having. I wonder if the C&L or Trickflow would be any easier to install?
Click to expand...

i really just think i got the ugly duckling of the batch. my friend has the accufab combo and we had that in in no time, but mine was a defect i believe. advice: if the bolt feels really tight but the piece (EGR ?? ) is not secure on the plenum........USE WASHERS; DONT FORCE IT
 

Premium Speed

New Member
Apr 22, 2003
1,006
0
0
Houston, Texas
Aug 31, 2004
#17
  • Aug 31, 2004
  • #17
onesticker said:
This is not very encouraging. I want to do this mod but not with the headaches you're having. I wonder if the C&L or Trickflow would be any easier to install?
Click to expand...

accually the accufab "should" come with everything you need to install it...this thread sounds like an "installer error" more than a problem with the plenum, but i could be wrong...i have installed 3 of these with no problems whatsoever
 

stang976

New Member
Apr 13, 2004
853
0
0
Westchester, NY
Aug 31, 2004
#18
  • Aug 31, 2004
  • #18
Premium Speed said:
accually the accufab "should" come with everything you need to install it...
Click to expand...

well my kit never came with any bolts or screws, just 2 gaskets and accufab stickers. hence i used ford factory bolts which i heard is a :nononono: did the ones you installed have supplied bolts?
 

Premium Speed

New Member
Apr 22, 2003
1,006
0
0
Houston, Texas
Aug 31, 2004
#19
  • Aug 31, 2004
  • #19
stang976 said:
well my kit never came with any bolts or screws, just 2 gaskets and accufab stickers. hence i used ford factory bolts which i heard is a :nononono: did the ones you installed have supplied bolts?
Click to expand...

i used the factory EGR bolts on all 3 cars if i remember correctly...all 3 kits came with gaskets and IAC bolts, no EGR bolts
 

stang976

New Member
Apr 13, 2004
853
0
0
Westchester, NY
Aug 31, 2004
#20
  • Aug 31, 2004
  • #20
Premium Speed said:
i used the factory EGR bolts on all 3 cars if i remember correctly...all 3 kits came with gaskets and IAC bolts, no EGR bolts
Click to expand...

well to be honest im not sure if it was the IAC or the EGR. its NOT the one that looks like a little flying saucer. its the other little housing piece. in any case no bolts were supplied in my kit, therefore i used the factory ford bolts which i realized now were too long, hence they broke off in the plenum when tightened. anyways a little ghetto machine work and i am back to stage 1.
 
  • 1
  • 2
Next
1 of 2 Next Last
You must log in or register to reply here.

Similar threads

Drivetrain 83’ Glx convertible C5 Trans help!
  • JacksonJared2113
  • Dec 25, 2025
  • Fox 5.0 Mustang Tech
Replies
2
Views
401
Fox 5.0 Mustang Tech Dec 26, 2025
JacksonJared2113
O
Need a hand: Hanging idle with all new parts
  • Overused03
  • May 15, 2024
  • SN95 4.6L Mustang Tech
Replies
2
Views
1K
SN95 4.6L Mustang Tech May 21, 2024
Overused03
O
Engine New Oil Leak Help.
  • Slo5Oh89
  • Mar 14, 2025
  • Fox 5.0 Mustang Tech
Replies
8
Views
611
Fox 5.0 Mustang Tech Mar 19, 2025
Slo5Oh89
0
V6 to V8 Swap info
  • 02_2v_Curtis
  • Jan 11, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
0
Views
765
1996 - 2004 SN95 Mustang -General/Talk- Jan 11, 2026
02_2v_Curtis
0
What's your tow rig?
  • LILCBRA
  • May 31, 2026
  • Other Auto Tech
Replies
3
Views
143
Other Auto Tech May 31, 2026
LILCBRA
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?