4.0 Exhaust Manifold - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > General Technical Discussions > Engines & Drivetrain > 4.0 Exhaust Manifold

The Original 3/8" Ruffstuff Diff Cover!Building a Bumper?Introducing MONSTALINER™ UV Permanent DIY Roll On Bed Line

Reply
Unread 11-15-2005, 11:17 AM   #1
rickbo
Registered User
 
Join Date: Apr 2005
Location: USA
Posts: 27
4.0 Exhaust Manifold

I have a 99 Wrangler 4.0 with a crack in the lower end of the exhaust manifold, near the O2 sensor. The dealer want's $1,100 to replace it. Can it be welded?

If not, how about these $120 aftermarket stainless steel ones, will they swap out OK (California model ?) Chiltons manual says to remove the fuel injectors in the process. Is it neccesary to tamper with the injecters in order to get to the manifold bolts (nuts).

Thanks.................Rick

rickbo is offline   Reply With Quote
Unread 11-15-2005, 08:02 PM   #2
gumcrew2
Registered User
1991 XJ Cherokee 
 
Join Date: Oct 2004
Location: Denver, CO
Posts: 1,184
Because the same 12 bolts hold the intake AND exhaust in, when you take 'em off the whole thing falls apart. As far as the injectors, you won't if you're careful. I did my headers and just unbolted the big bolts, which are a PAIN to get to. I say, if you've got to replace it, get nice headers. I got a set of pacesetter headers for $225 shipped. got 'em on eBay.
__________________
"Nitrous? So is that like viagra for your Jeep?" -mom

"I flopped it"
gumcrew2 is offline   Reply With Quote
Unread 11-15-2005, 11:10 PM   #3
wyllie YJ
Registered User
2001 TJ Wrangler 
 
Join Date: Nov 2005
Posts: 9
wyllie YJ

I had a similiar problem and had to replace mine. I couldn't see spending $800-$1000 so I decided to try it myself. I'm no mechanic but with a good manual it was fairly easy. I did not take out my injectors or disconnect my throttle cable as the manual suggested. I did unplug the electrical connectors to them to remove the intake manifold so I could clean the gasket surface on the head.
I agree going with a quality replacement header. It's a job you don't want to do twice.

PS. spray all the bolts with WD40 or .... several times a few days prior you will thank yourself.
wyllie YJ is offline   Reply With Quote
Reply
Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.