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XJ Ask the Question Thread
Senior Member
Joined: Mar 2013
Posts: 523
Likes: 2
From: Manassas, VA
Year: 1999
Model: Cherokee
Engine: 4.0
Id do the same thing if I where you. A stock 29 c8.25 for the time being, then if I ever came across an axle id build it in the garage and swap it in once it was done and beefy.
So my fiancee's WJ (140k miles) was having backfiring (brother in law told me) and I was checking it out, I had a vacuum gauge on and the needle was pointing to 15 while idling and when I pushed on the throttle, it went up 20-22 during acceleration. But when I let it go, it went back to 15-17 I tried to adjust the timing by turning the thingy where the distributor was supposed to be. And finally got it to be at 22 at idle, but it drops down to 13-18 while revving a and would stall out. So far, the plugs and all sensors (except for those on throttle body) are replaced. Would there be something wrong with the valve train or something else?
2000 XJ 4.0. Looking for the exhaust manifold to flange hardware. Rockauto has some listed, but they are studs that press into the manifold. The ones that came out were bolts and nuts, with the nuts having a flange or tang on the nut. You can start the bolt, and the tang keeps the nut from spinning when tightening. The one from Rockauto,'and the only style I can find when looking by application are the press in studs, and they are way to big to fit into the manifold. Any one have any idea where to get them, or is it going to be a stealership only item........thanks.....RR
☠ CF Sheriff ☠

Joined: Nov 2009
Posts: 15,197
Likes: 18
From: Aberdeen, MD
Year: 1995
Model: Cherokee
Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts
2000 XJ 4.0. Looking for the exhaust manifold to flange hardware. Rockauto has some listed, but they are studs that press into the manifold. The ones that came out were bolts and nuts, with the nuts having a flange or tang on the nut. You can start the bolt, and the tang keeps the nut from spinning when tightening. The one from Rockauto,'and the only style I can find when looking by application are the press in studs, and they are way to big to fit into the manifold. Any one have any idea where to get them, or is it going to be a stealership only item........thanks.....RR
Seasoned Member
Joined: Dec 2010
Posts: 345
Likes: 1
From: So. California
Year: 1991
Model: Cherokee
Engine: 4.0 HO
Other than a slight difference in bore Dia. and gasket material, what is the difference (fit or function) between a 4.0L head gasket for a 91 compared to a head gasket for say a 2003. I see Felpro lists different head gaskets. Will either one of them work for both years, or is there something very different?
Thank you in advance for any input or advise!!
Dennis
Thank you in advance for any input or advise!!
Dennis
Senior Member
Joined: Aug 2012
Posts: 583
Likes: 0
From: Clear Lake, TX
Year: 1999 Jeep Cherokee
Model: Cherokee
Engine: 4.0
Other than a slight difference in bore Dia. and gasket material, what is the difference (fit or function) between a 4.0L head gasket for a 91 compared to a head gasket for say a 2003. I see Felpro lists different head gaskets. Will either one of them work for both years, or is there something very different?
Thank you in advance for any input or advise!!
Dennis
Thank you in advance for any input or advise!!
Dennis
Last edited by Houston Kid; Mar 5, 2014 at 10:07 PM.
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Other than a slight difference in bore Dia. and gasket material, what is the difference (fit or function) between a 4.0L head gasket for a 91 compared to a head gasket for say a 2003. I see Felpro lists different head gaskets. Will either one of them work for both years, or is there something very different?
Thank you in advance for any input or advise!!
Dennis
Thank you in advance for any input or advise!!
Dennis
CF Veteran




Joined: Jul 2012
Posts: 3,132
Likes: 356
From: Andover, VT
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0 L
So I've been searching for a HP dana 30 with 4.10s for awhile. My plan is to find a 8.8 with 4.10s. I have had no luck finding a HP, but my buddy offered to sell me a LP dana 30 with 4.10s from a TJ. Would you guys recommend me buying the TJ axle for $100 as a temporary match for the 8.8?
Moderator of Jeeps
Joined: Jul 2011
Posts: 21,029
Likes: 3
From: Frederick, MD from Cleveland, OH
Year: 1993 YJ Wrangler
Engine: 4.0 I6
So I've been searching for a HP dana 30 with 4.10s for awhile. My plan is to find a 8.8 with 4.10s. I have had no luck finding a HP, but my buddy offered to sell me a LP dana 30 with 4.10s from a TJ. Would you guys recommend me buying the TJ axle for $100 as a temporary match for the 8.8?
CF Veteran
Joined: Aug 2011
Posts: 1,994
Likes: 8
From: San Jose
Year: 89
Model: Cherokee
Engine: 4.0 I6
So I've been searching for a HP dana 30 with 4.10s for awhile. My plan is to find a 8.8 with 4.10s. I have had no luck finding a HP, but my buddy offered to sell me a LP dana 30 with 4.10s from a TJ. Would you guys recommend me buying the TJ axle for $100 as a temporary match for the 8.8?
If you want to lock it you should wait for a HP




