Most recommended header's?
Thread Starter
Junior Member
Joined: May 2011
Posts: 52
Likes: 0
From: Upstate NY
Year: 1997
Model: Cherokee
Engine: 242 CID IL6 4.0L
Ok ok guys lol before you completely talk me into this apn header let me ask two questions...can you buy it ceramic coated andd has anyone with the apn had any issues with 02 sensor knocking on anything because of placement?
Senior Member
Joined: Mar 2011
Posts: 522
Likes: 0
From: Las Vegas
Year: 1992
Model: Cherokee
Engine: 4.oL H.O. 784 injectors, EV6 to EV1 connectors, APN header, Dynomax exhaust
CF Veteran
Joined: Nov 2009
Posts: 1,262
Likes: 0
From: Conroe, Texas
Year: 1997
Model: Cherokee
Engine: I6
ive got the apn header, love it, works great. as for ceramic i dont think u can buy it that way but u can have it done i have the same jeep as u, o2 sensor is fine, bolted up in an hour and was on my way
Seasoned Member
Joined: Oct 2009
Posts: 414
Likes: 0
From: Portland, Oregon
Year: 1991
Model: Cherokee
Engine: 4.0L
Anyone running a Dynomax header? It uses a 3-2-1 long tube design which should be good for torque. I already have one because it's one of the few headers that would fit my Renix, that XJ is now sold, never got around to installing it, but it's supposed to fit up to '93 XJ's so I was thinking of installing it on my '91...
So I tried the Edlebrock ceramic coated header on my 4.6L stroker. It cracked in 13 mounths awesome one year warranty. I ended up putting the later model two piece cast oem exhaust manifold back on and built a Y pipe with 2.5" stuff all back and it is still going strong (3yrs). Just something to keep in mind.
CF Veteran
Joined: Nov 2008
Posts: 1,021
Likes: 3
From: mass
Year: 1992
Model: Cherokee
Engine: 4.0 high output
Member
Joined: May 2010
Posts: 205
Likes: 0
From: Mississippi
Year: 94
Model: Cherokee
Engine: 4.0 Stroked - 4.7
I have this header sitting in my attic right now collecting dust - $125 shipped and its yours... Check out my pics - I think it is still in there
CF Veteran
Joined: Jun 2011
Posts: 2,858
Likes: 1
From: Nor-Cal
Year: 1990
Model: Cherokee
Engine: The venerable 4.0
I wish I had a spare 125... I'm doing my own custom exhaust and seriously thinking about making my own header..... my dads buddy owns a big time classic car resto shop dealing in exotic American iron. He welds up his headers in stainless.... I can prob get parts from him.
Senior Member
Joined: Jan 2011
Posts: 689
Likes: 2
From: Upstate N.Y
Year: 2000.1999,1996
Model: Cherokee
Engine: 4.0
All headers are designed to flow better than stock manifold logs, performance won't be much with a header alone, it will take a combination of quite a few upgrades for any real performance to be seen.If your looking to do future upgrades also you should consider getting a coated header while more money the benifits are greater than just a standerd uncoated steel header.
Senior Member
Joined: Jan 2011
Posts: 689
Likes: 2
From: Upstate N.Y
Year: 2000.1999,1996
Model: Cherokee
Engine: 4.0



unless it has an EO#. I don't think I've seen one but I haven't looked to hard either.