Another downpipe thread! - Ford Powerstroke Diesel Forum
 
LinkBack Thread Tools Display Modes
post #1 of 10 Old 03-13-2013, 08:58 AM Thread Starter
Powerstroke.org Fanatic
 
Join Date: Mar 2012
Posts: 105
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Another downpipe thread!

Just need to know what the size of the stock downpipe is?

Noticed that Summit racing sells 3" and 4" 2 piece DP's. I got the stock "cobra" head right now and ready to hack the thing out and replace.

Sorry if this has been posted up many times but can't seem to search on here with my iPhone.

Many thanks in advance!
Rob73 is offline  
post #2 of 10 Old 03-13-2013, 09:08 AM
Compression Ignition Addict
 
Join Date: Aug 2008
Location: Madison, WI
Posts: 3,917
Thanks: 4
Thanked 132 Times in 128 Posts
Mentioned: 0 Post(s)
Quoted: 35 Post(s)
Feedback Score: 0 reviews
Unless you have a body lift, only a 3"-er will fit, and even that will take a minor mod to the cab.
madpogue is offline  
post #3 of 10 Old 03-13-2013, 09:11 AM Thread Starter
Powerstroke.org Fanatic
 
Join Date: Mar 2012
Posts: 105
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Many thanks, that's just a straight swap and 3" at both flanges?
Rob73 is offline  
post #4 of 10 Old 03-13-2013, 09:12 AM
Compression Ignition Addict
 
superduty4x4's Avatar
 
Join Date: Nov 2007
Posts: 2,355
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
On my exhaust kit I'm pretty sure the down pipe is 3" until the flange where the cat would be, then the cat delete pipe goes to 4". I mean... if one was to run a cat delete pipe of course.
Making a 4" down pipe fit requires extensive firewall modifications. It's not worth it.

97 F350 CCLB 4x4 PSD
superduty4x4 is offline  
post #5 of 10 Old 03-13-2013, 09:16 AM
Hillbilly Deluxe

 
STROKED_NY_023's Avatar
 
Join Date: Oct 2009
Location: Oxford, NY
Posts: 2,996
Thanks: 3
Thanked 5 Times in 5 Posts
Mentioned: 0 Post(s)
Quoted: 2 Post(s)
Feedback Score: 3 reviews
Assuming we are talking OBS truck, the outlet flange on the turbo is only 3". The 4" is probably for an SD 7.3 which has a 4" outlet.

The swap is not difficult... You have to either cut the pinch weld or bend it out of the way. Cutting the stock DP is the easiest way i have found to get them out.

_____________________________________________
Seth

Stroked_NY_023
95' F-350 CCLB DRW POWERSTROKE
08 Axle/4x4 conversion, 5spd conversion, 6637, 5" SP exhaust, gearhead tunes
.]
STROKED_NY_023 is offline  
post #6 of 10 Old 03-13-2013, 10:19 AM Thread Starter
Powerstroke.org Fanatic
 
Join Date: Mar 2012
Posts: 105
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Will be ordering this today, thanks for everyone's input. I got a decent 6' piece of 2" pipe ready to bend the firewall already.
Rob73 is offline  
post #7 of 10 Old 03-13-2013, 11:01 AM
DERAIL MOD!!!


 
351fifty's Avatar
 
Join Date: May 2011
Location: Canton and kennesaw
Posts: 23,180
Thanks: 34
Thanked 207 Times in 195 Posts
Mentioned: 1 Post(s)
Quoted: 3 Post(s)
Feedback Score: 4 reviews
I used an air hammer cut the pinch weld on both sides I needed to fit the dp, and bent it down, good luck with yours

-Kris-
2000 excursion V10 2wd 230k
2000 Excursion 7.3 4x4 246k
1995 CCLB DRW 324K
2001 CCLB DRW 319K
Dp tuner infinity, exhaust, intake, chipped, tricked, and wrecked


Quote:
Originally Posted by marine5811
The stock downpipe in an OBS is flat because I'm a ginger.
Quote:
Originally Posted by alberta 7.3
Finding a decent woman is like shopping for a used truck. You spend most of your time picking through the money pits, wrecks, and basket cases until you find one that you can tolerate
Quote:
Originally Posted by JJFLASH
Well at least you caught the loose bolts before they cause any damage. Nothing worse than a sloppy hole
351fifty is offline  
post #8 of 10 Old 03-13-2013, 01:53 PM
Compression Ignition Addict
 
superduty4x4's Avatar
 
Join Date: Nov 2007
Posts: 2,355
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
I used a duck bill on a porta power to push the fire wall back. Makes life soooo easy.

97 F350 CCLB 4x4 PSD
superduty4x4 is offline  
post #9 of 10 Old 03-13-2013, 05:18 PM
Compression Ignition Addict
 
Join Date: May 2007
Posts: 724
Thanks: 2
Thanked 4 Times in 4 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Wink

Quote:
Originally Posted by superduty4x4 View Post
I used a duck bill on a porta power to push the fire wall back. Makes life soooo easy.
X2 on that, and you dont need to cut anything and no issues with future corrosion in the cuts.

CELAYORK is offline  
post #10 of 10 Old 03-13-2013, 05:23 PM
Compression Ignition Addict
 
Join Date: May 2007
Posts: 724
Thanks: 2
Thanked 4 Times in 4 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Lightbulb

Quote:
Originally Posted by Rob73 View Post
Will be ordering this today, thanks for everyone's input. I got a decent 6' piece of 2" pipe ready to bend the firewall already.
Are you going to use your catalytic converter or your are going to dich it and install a 4" pipe?. FYI there are DP that goes from 3" to 4" in two pieces.



CELAYORK is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel 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









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



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