67 Mustang with 466 BBF - 460 Ford Forum
General Race Tech All other topics, such as Fuel Delivery, Ignition, Engine, Safety, Data Aquisition, Suspension, etc...

User Tag List

 
LinkBack Thread Tools Search this Thread Display Modes
post #1 of 13 (permalink) Old 07-03-2011, 05:51 PM Thread Starter
Junior Member
 
Join Date: Jul 2010
Posts: 32
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
67 Mustang with 466 BBF

Hi, I hope you guys can help.
I have a 460 bbf in my 67 mustang and I am unsure who makes the headers, they have 2" primaries and 3 1/2 collectors. One primary from opposites sides cross under the motor and end in the other collector.
Now my problem.
I installed a magnaflow X-pipe system with tail pipes so I can take the car on the street. Once the full exhaust was put in the car runs terrible and smokes and smells of fuel bad.
Magnflow said I am double scavenging and I can't run an exhaust with these headers???
The car runs 10.80's consistent open pipe.
I checked the power valve dropped two jet sizes for primary and secondaries.
Still smokes and runs terrible.

Magnaflow said I can only run open??? or change my headers?
This doesn't sound right, Please help!
dmorgan is offline  
Sponsored Links
Advertisement
 
post #2 of 13 (permalink) Old 07-04-2011, 07:03 AM Thread Starter
Junior Member
 
Join Date: Jul 2010
Posts: 32
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
I would greatly appreciate any help or idea. Thank you
dmorgan is offline  
post #3 of 13 (permalink) Old 07-04-2011, 04:53 PM
Senior Member
 
Join Date: Jan 2010
Posts: 302
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
 
What dia. X-pipe,mufflers and tailpipes?
ITSA 91 is offline  
 
post #4 of 13 (permalink) Old 07-04-2011, 06:44 PM Thread Starter
Junior Member
 
Join Date: Jul 2010
Posts: 32
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
the x-pipe through tail pipes are 3" magnaflow part#15819
I appreciate any direction.
Thank you
dmorgan is offline  
post #5 of 13 (permalink) Old 07-05-2011, 06:53 AM
Senior Member
 
ProStreetFairlane's Avatar
 
Join Date: Jan 2006
Location: Northern VA
Posts: 1,384
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
 
Garage
It is best to use an X pipe the same diameter as the collectors (in your case 3.5"). You can neck down after the X pipe. I run a 3.5" system with and X pipe all the way back. Try running it just with the X pipe and see if it still runs badly.

NIGHTSHADE: 1966 ProStreet Fairlane
Street driven 573 BBF, 4.605 bore A460 block, ported TFS Street heads, JE pistons, 6.8 Eagle rods, 4.3 SCAT crank, Bullet cam, ATI C6, 3.5" X pipe and Dynomax Ultra Flows...thanx Charlie/Lem & Jet Boat Bob!
http://www.jetboatbob.com/
http://bfevansraceparts.com/
ProStreetFairlane is offline  
post #6 of 13 (permalink) Old 07-05-2011, 11:53 AM Thread Starter
Junior Member
 
Join Date: Jul 2010
Posts: 32
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
I am willing to try anything.

Just wondering if you use the same style header I do? Where a primary from opposite bank crosses under the motor and ends in the other collector?

Thank you
dmorgan is offline  
post #7 of 13 (permalink) Old 07-05-2011, 12:50 PM
Senior Member
 
ProStreetFairlane's Avatar
 
Join Date: Jan 2006
Location: Northern VA
Posts: 1,384
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
 
Garage
Are those Crites headers? Mine do not crossover like that.

NIGHTSHADE: 1966 ProStreet Fairlane
Street driven 573 BBF, 4.605 bore A460 block, ported TFS Street heads, JE pistons, 6.8 Eagle rods, 4.3 SCAT crank, Bullet cam, ATI C6, 3.5" X pipe and Dynomax Ultra Flows...thanx Charlie/Lem & Jet Boat Bob!
http://www.jetboatbob.com/
http://bfevansraceparts.com/
ProStreetFairlane is offline  
post #8 of 13 (permalink) Old 07-05-2011, 02:42 PM
Member
 
John Myrick's Avatar
 
Join Date: Jan 2006
Location: Maryland
Posts: 234
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
 
I believe he has the 1st generation Crites headers that do have 1 tube passing under to the opposite bank.

Some people take themselves way too serious
John Myrick is offline  
post #9 of 13 (permalink) Old 07-05-2011, 06:13 PM Thread Starter
Junior Member
 
Join Date: Jul 2010
Posts: 32
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Not sure who makes the headers but it is an older build. One primary does cross under the motor from each side ending in different collectors. Could exhaust gas velocity be the problem? I really don't know who makes the headers but i would say you guys are correct.
dmorgan is offline  
post #10 of 13 (permalink) Old 07-06-2011, 07:51 PM
Senior Member
 
onequickstang's Avatar
 
Join Date: Feb 2006
Location: Wantagh, NY
Posts: 292
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
 
Garage
I run the early Crites headers and they don't cross over. I'm pretty sure those are Tubular Automotive headers. I've never heard of anyone having a problem like that with them, but you may want to give them a call.

Rob

'68 Mustang Fastback. Coming soon - all aluminum 548 A441 Hemi! Gonna be one bad FoMoCo!
onequickstang is offline  
post #11 of 13 (permalink) Old 07-07-2011, 09:07 PM
Senior Member
 
Join Date: Jan 2010
Posts: 302
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
 
"THEY" say that an X-Pipe increases low and mid range torque.Do you think you really need one? I run 3.5in back to a super lite weight single chamber Flowmasters turned out in front of the rear wheels. A"little"loud.
ITSA 91 is offline  
post #12 of 13 (permalink) Old 07-08-2011, 07:10 AM Thread Starter
Junior Member
 
Join Date: Jul 2010
Posts: 32
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
I really wanted to quite the car down so not to get pulled over for noise, and to also race on muffler nights at track.
This exhaust really has the car poorly. I can't help but think the headers have something to do with it and the smoke condition. I stepped down the jets and power valve is fine, dist. locked out at 34*.
dmorgan is offline  
post #13 of 13 (permalink) Old 07-27-2011, 12:57 PM Thread Starter
Junior Member
 
Join Date: Jul 2010
Posts: 32
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
New wires really made the difference ! super conductor MSD - removed the motorsport and had a burnt boot. thanks for all the help guys.
dmorgan is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the 460 Ford Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome