91 Exhaust System

NFLjunkeez

Member
Feb 16, 2013
30
0
7
50
I had an exhaust pipe break about 2 feet in front of a muffler due to rust. When I looked under the car, that 2 foot pipe (coming out of the muffler) is dangling towards the engine just waiting to catch something causing it to do a "pole vault" action and can cause big damage, possibly to my gas tank as the muffler rips away and bounces around under the car.

As some of May know, I've been battling an overeating issue with my 91 5.0 for a long time. My current exhaust pipes are 2".

Now that I have to replace these pipes, should i increase the size to 2.5 or 3" pipes? Would that help get heat out of my engine? What would it do to my back pressure?

I want to upgrade for better performance while at the same time getting rid of the amount of heat that is staying in my engine.

It's not overheating anymore but it still runs hot. After upgrading to A Frame gauges, my temp gauge reads just above 250° and stays there.

Would increasing my pipes help lower the temp?
 
  • Sponsors(?)


84Ttop

They make new pistons every day, so why worry?
Mod Dude
Jul 2, 2009
5,329
3,349
204
South Jersey
Stock exhaust should be 2.25". The upgrade that most go to will be 2.5" exhaust and I agree that this is where you should be moving forward. There is also no reason why your car should be running that hot, the exhaust should have no bearing on that either way
 
  • Like
Reactions: NFLjunkeez

NFLjunkeez

Member
Feb 16, 2013
30
0
7
50
Stock exhaust should be 2.25". The upgrade that most go to will be 2.5" exhaust and I agree that this is where you should be moving forward. There is also no reason why your car should be running that hot, the exhaust should have no bearing on that either way
What is the purpose of the upgrade? Does a quarter of an inch make that much of a difference?
 

84Ttop

They make new pistons every day, so why worry?
Mod Dude
Jul 2, 2009
5,329
3,349
204
South Jersey
What is the purpose of the upgrade? Does a quarter of an inch make that much of a difference?
2.5" exhaust is more of the industry standard than anything else. Is it absolutely needed? No. In years past I have had a low 10 second fox body that made roughly 500hp and still used 2.25" mufflers. That being said, any of the aftermarket exhaust systems that you will see in today's market will be 2.5". My vote for a car like yours would be a cat back exhaust system from a company such a magnaflow, stainless steel construction and a life time warranty. If it was some more growl that you are after at the same time then you can upgrade the stock H pipe to either an aftermarket H or X pipe with high flow cats.
 
  • Like
Reactions: NFLjunkeez

stykthyn

I want to measure mine. It doesn't look that tall.
10 Year Member
Jul 6, 2006
5,302
2,733
223
gainesville
Magnaflow or bassani. Both offer stainless and are very well made. I would avoid Mac, or pypes. They are cheap for a reason.
 
Thread starter Similar threads Forum Replies Date
dvelek Exhaust System 65 Mustang 347 Engine Swap Classic Mustang Specific Tech 12
realtex Exhaust system 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 4
D 2002 V6 Exhaust System 1996 - 2004 SN95 Mustang -General/Talk- 16
MoDriver SOLD Dr. Gas Exhaust X-pipe 3" X 3" Kit With Summit Header Collector Exhaust 0
reddragonracing For Sale 94-98 Exhaust Y Pipe And Performance Muffler Exhaust Parts 0
MoDriver SOLD Early Model Exhaust With Dr. Gas X-pipe Exhaust 0
Northern Pony Hey Silver Mustang In Se Michigan With Awesome Exhaust! 2005 - 2014 S-197 Mustang -General/Talk- 2
H Will A 97 Sn95 Exhaust System Work For A 98 1996 - 2004 SN95 Mustang -General/Talk- 1
P Poor Acceleration/o2 Sensors 1996 - 2004 SN95 Mustang -General/Talk- 12
SOC_DOC32 Expired For Sale, Aluminator Short Block, 03 Cobra Fr500 Heads, And Enginless Project Car SN95 Mustangs For Sale (1994-04) 0
Leauxs 2015 Gt Cat-back Exhaust System (deepest Sound) 2015+ (S550) Mustang -General/Talk 9
T Exhaust Need Advice On Where To Purchase New Exhaust System Fox 5.0 Mustang Tech 0
rockstarwb Exhaust Curious About What This Type Of Exhaust System Would Sound Like Fox 5.0 Mustang Tech 4
R Flowmaster Exhaust System 1965 - 1973 Classic Mustangs -General/Talk- 5
SterlingGreyGT Exhaust System Mod Question 2010 - 2014 Specific Tech 4
SableSal Completely new exhaust system! Installed! Cali Legal! 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 5
StangVertGT Exhaust system that sounds like an old muscle car SN95 4.6L Mustang Tech 120
J Full Exhaust System 2005 - 2009 Specific Tech 9
X How Much Does Exhaust System Cost? SN95 V6 Mustang Tech 9
M Expired Selling Dual Borla Pro Xs Exhaust System For 2005-2009 Mustang V6 Exhaust Parts 1
M Expired Selling Dual Borla Pro Xs Exhaust System For 2005-2009 Mustang V6 Exhaust Parts 0
M Selling Dual Borla Pro Xs Exhaust System For 2005-2009 Mustang V6 2005 - 2014 S-197 Mustang -General/Talk- 0
C Expired Full exhaust system for 351W in Fox Body (Chicago) Exhaust Parts 0
cjcoburn Exhaust System Hanging Lopsided? SN95 4.6L Mustang Tech 2
R New Exhaust System Custom SN95 V6 Mustang Tech 4
Venom351R Exhaust Will Piecing Together This Exhaust System Work? 1994 - 1995 Specific Tech 15
F stock '12 GT exhaust system Exhaust Parts 2
D Mac 3" ExhauSt System SN95 4.6L Mustang Tech 2
R Which exhaust system should I buy? Fox 5.0 Mustang Tech 3
T Educate me on exhaust systems 2005 - 2014 S-197 Mustang -General/Talk- 6
candphall Exhaust System Classic Mustang Specific Tech 3
Dougsters Need some exhaust system advice before removing Classic Mustang Specific Tech 4
N Exhaust Systems Made in the USA SN95 4.6L Mustang Tech 6
MICHAEL COTTLE 2002 Gt Mustang Factory catback exhaust system Exhaust Parts 1
D Exhaust system and factory warranty 2005 - 2014 S-197 Mustang -General/Talk- 6
D New exhaust system SN95 4.6L Mustang Tech 11
MRaburn Kooks 2011 Ford Mustang 5.0 exhaust systems StangNet Site News 0
MRaburn Kooks 2011 Ford Mustang 5.0 exhaust systems 2010 - 2014 Specific Tech 0
M Exhaust System 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 4
MRaburn Magnaflow exhaust systems for 2011 Ford Mustang GT and V6 2010 - 2014 Specific Tech 0
MRaburn Magnaflow exhaust systems for 2011 Ford Mustang GT and V6 StangNet Site News 1
N what exhaust system 1996 - 2004 SN95 Mustang -General/Talk- 4
G Need exhaust help for my 1998 GT cat back system SN95 4.6L Mustang Tech 0
G Need exhaust help for my 1998 GT cat back system SN95 4.6L Mustang Tech 3
G 03 Spoiler, Stock Exhaust System Interior Exterior Parts 2
MustangLX-5.0 Pypes exhaust. Why no 94-97 V6 systems, but they have 98 - 04? wtf 1996 - 2004 SN95 Mustang -General/Talk- 5
DawgStang Exhaust System Recommendation Wanted 1996 - 2004 SN95 Mustang -General/Talk- 21
J Entire exhaust system welded 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 15
One2One Need help with this new exhaust system ^^ 2005 - 2009 Specific Tech 6
gtcobra302 Dynomax Exhaust System 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 4
Similar threads