• Welcome Visitor! Please take a few seconds and Register for our forum. Even if you don't want to post, you can still 'Like' and react to posts.

Exhaust

hntr45

New Member
Joined
Sep 27, 2014
Messages
29
Reaction score
0
Points
1
Vehicle Year
1997
Make / Model
Ford
Engine Size
2.3
Transmission
Manual
So I have a custom exhaust on my truck with 2.25" pipe from the manifold back. Rather than the exhaust shop putting in some kind of taper pipe, they simply put a 2" pipe with a 2.25" pipe and welded up the gap right before the flange. Would it benefit me at all to have that tapered instead? I also had the thought of shorty headers that went from the head bore size to 2.25" outlet. Any advice is greatly appreciated
 


ericbphoto

Overlander in development
Forum Moderator
Supporting Member
U.S. Military - Veteran
TRS 20th Anniversary
TRS Event Participant
GMRS Radio License
Joined
Feb 7, 2016
Messages
12,180
Reaction score
10,342
Points
113
Age
58
Location
Wellford, SC
Vehicle Year
1993
Make / Model
Ford Ranger
Engine Type
3.0 V6
Engine Size
3.0L
Transmission
Manual
2WD / 4WD
4WD
Total Lift
6"
Tire Size
35"
My credo
In theory, theory and practice are the same. In practice, they are different.
I'm not an exhaust expert, but I'll give an opinion anyway.

Since the transition is Increasing pipe size, I would think the welded transition is fine as long as the weld sealed it properly. The size difference is very small. The ID of the 2.25" pipe is around 2.10 - 2.15", which is barely bigger than the 2.0" pipe. Even if the pipes are not perfectly centered, there is very little gap to fill. Furthermore, I can't see where a tapered transition would do much to improve exhaust flow as compared to the welded transition. Due to the pipe size increase, you are reducing exhaust gas velocity.
 

alwaysFlOoReD

Forum Staff Member
Forum Moderator
TRS Banner 2012-2015
TRS 20th Anniversary
Joined
Apr 13, 2009
Messages
12,444
Reaction score
3,419
Points
113
Location
Calgary, Canada
Vehicle Year
'91, '80, '06
Make / Model
Ford, GMC,Dodge
Engine Size
4.0,4.0,5.7
Transmission
Manual
2WD / 4WD
4WD
I watched a video awhile back that some magazine did about header sizing and if dimpling the tubes ( like for steering issues) would affect horsepower. At the end ALL the tubes were crushed in half and the horsepower dropped by about 5%. I don't think the transition you have will be bettered by a taper.

Sent from my XT1032 using Tapatalk
 

chvlfrk

December 2010 STOTM Winner
U.S. Military - Veteran
V8 Engine Swap
MTOTM Winner
Joined
Aug 9, 2007
Messages
1,168
Reaction score
29
Points
48
Age
64
Location
Niota, TN
Vehicle Year
98
Make / Model
Ranger XLT 5.0L
Engine Type
V8
Engine Size
5.0L
Transmission
Automatic
Tire Size
235/70R15 front / 275/60R15 rear
>>>>>

Agree with the 2 above posts.

My 02: Headers would be the best addition to your current exhaust, and from what I've read, there ain't many, if any companies that build them for our trucks:icon_confused:, so CUSTOM or HAND-MADE is bout the only option.:icon_welder:

Keep us informed on what ya do and take pics!:icon_thumby:
 

Sponsored Ad


Sponsored Ad

Top