Yet another exhaust thread...
Thread Starter
|
Tuned
Joined: Dec 2009
Posts: 273
Likes: 0
Yet another exhaust thread...
Okay, before anyone says use the search tool, I did. I searched for a y pipe to replace my front cat and has a O2 sensor thread built in. I found one from Jeg's which is this: JEGS Performance Products 31010 JEGS Off-Road Y-Pipes for Trucks
Then on the forums I searched and found a Walker one: Walker Exhaust 45166 - Walker Exhaust Pipe Connectors - Application - SummitRacing.com
Now, onto the details. My truck is a '91 F150 with a 302. Last year I had new exhaust put in from the front cat back. I replaced the rear cat with a high flow magnaflow cat and had 2.5" piping put in all the way back. I'm wanting to remove my front cat and still have the o2 sensor thread, so I figured buy a y pipe. I found out they were expensive besides the Walker one. My question is: would the walker one that says it's for the I6 work for my 302? Or should I go ahead and buy the one from jeg's. Also, does anyone know if the Walker one has an o2 sensor thread in it?
I'm fine with buying the one from Jeg's if I have to. I'd just like to get everyone's opinions on what I should do.
Then on the forums I searched and found a Walker one: Walker Exhaust 45166 - Walker Exhaust Pipe Connectors - Application - SummitRacing.com
Now, onto the details. My truck is a '91 F150 with a 302. Last year I had new exhaust put in from the front cat back. I replaced the rear cat with a high flow magnaflow cat and had 2.5" piping put in all the way back. I'm wanting to remove my front cat and still have the o2 sensor thread, so I figured buy a y pipe. I found out they were expensive besides the Walker one. My question is: would the walker one that says it's for the I6 work for my 302? Or should I go ahead and buy the one from jeg's. Also, does anyone know if the Walker one has an o2 sensor thread in it?
I'm fine with buying the one from Jeg's if I have to. I'd just like to get everyone's opinions on what I should do.
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
That Walker 45166 is not going to fit your 5.0L equipped F150. You would need a Walker 15742. Unfortunately it also comes with a converter, which you say you already have. And yes this y-pipe has the fitting for the O2 sensor.
You could remove the existing front converter and replace it with a connecting pipe to your Magnaflow converter.
You could remove the existing front converter and replace it with a connecting pipe to your Magnaflow converter.
Postmaster
Joined: Dec 2007
Posts: 3,052
Likes: 1
From: Jacksonville FL
Just cut the cat off and have an exhaust shop weld up a new piece and weld an O2 bung in it. Then take the cat to the scrap yard and that will pay for the exhaust work.
Thats what I did. Sold all 4 cats and got my exhaust completely redone for exactly how much I got for the cats.
Thats what I did. Sold all 4 cats and got my exhaust completely redone for exactly how much I got for the cats.
Tuned
Joined: Nov 2010
Posts: 256
Likes: 0
From: amarillo TX
97 F-250 but most of the exhaust stuff is the same between the 2 from what I understand.
Trending Topics
Hotshot
Joined: Sep 2001
Posts: 11,958
Likes: 228
I would also just have the exhaust shop replace the front cat with with pipe. Isn't your front cat a dual in single out? Just have them make a Y for that.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
If you have the big single converter then your truck needs a Walker 15762. That is for a converter only, no y-pipe. It is also a 49 state version, not for use in Cali.
The y-pipe is sold separately from the converter. If you truck uses a single O2 sensor then a Walker 40572 or 40585 depending on transmission may fit. The parts books get a little fuzzy around the '96 time period for these trucks.
Tuned
Joined: Nov 2010
Posts: 256
Likes: 0
From: amarillo TX
Dual in single out converter and muffler (for whatever reason they didn't just run 2 cats and a crossover pipe) Thought real hard about having a pair of flanges cut and just welding some straight pipes on them with a dual in dual out muffler.
Thread Starter
|
Tuned
Joined: Dec 2009
Posts: 273
Likes: 0
Yea it is. Isn't the y pipe welded to the cat though? I don't want them to mess anything up. So, is this probably the best and cheapest route?
Senior User
Joined: May 2010
Posts: 307
Likes: 1
From: McMinnville, TN
I just got some work done at my local exhaust shop. $170. They remove the stud that I broke off in the manifold and gave me a new exhaust from the manifolds back. the pipes go into a dual in/single out custom made muffler, similar to a mello-tone or flowmaster. They even welded in a bung a reinstalled my O2 sensor.
Hotshot
Joined: Sep 2001
Posts: 11,958
Likes: 228
Thats because most of the aftermarket cats are not CALI compliant. People do that here all the time and run a new cat on each pipe.