Exhaust Manifold Reboot - JeepForum.com
 
LinkBack Thread Tools
post #1 of 5 Old 03-31-2014, 01:34 PM Thread Starter
ZGYJ
Registered User
1989 YJ Wrangler 
 
Join Date: Dec 2008
Location: Studio City
Posts: 72
Exhaust Manifold Reboot

I have an 89' Wrangler, straight 6. After years of exhaust and intake leaks I'm finally getting around to replacing the gaskets and upon further inspection, the exhaust manifold. It has numerous cracks in it, it sounds like a xylophone when you tap it.

You can the big one in the middle picture.

I ordered a new manifold through ebay. It's super cheap and I'm hoping it works. Nuff said about that.

It needs the manifold heater moved from the old to the new. Has anyone done this and what did they use to reattach it to the new manifold? I've included pics.

Also, as you can see from the new one there are bolts going into the exhaust runners on the new one, where there are only blanks on the old one. I'm assuming those are used for another model and don't think it'll take away from the performance. Not that my 4.2 has much in the way of performance.

But what I'm hoping for after this is better starting and less of the wrong kinds of noise.

Help is appreciated!

Attached Images
     
ZGYJ is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 03-31-2014, 01:40 PM
YJ4LIFE
Registered User
1989 YJ Wrangler 
 
Join Date: Dec 2011
Posts: 827
i bought the same one off of rockauto. didn't use that heat through. went efi. I'd dremel those studs off and repaint that heat sheak with some high temp paint.

'89 YJ, 4.2L, ax-15, B&M shifter, 1" BL, TJ flares, '99 intake, '91 EFI, 5.0L explorer injectors, GenRight tank & stretch, 35" ProComp Xtreme muds, 52" chevy springs rear, 44044 Ranchos front.....
YJ4LIFE is offline  
post #3 of 5 Old 03-31-2014, 03:49 PM Thread Starter
ZGYJ
Registered User
1989 YJ Wrangler 
 
Join Date: Dec 2008
Location: Studio City
Posts: 72
Quote:
Originally Posted by YJ4LIFE View Post
i bought the same one off of rockauto. didn't use that heat through. went efi. I'd dremel those studs off and repaint that heat sheak with some high temp paint.
I can get it off, but what's the best way to reinstall? I'm in Cal and they like their smog-like-stuff where the factory put it.
ZGYJ is offline  
post #4 of 5 Old 05-07-2014, 10:54 AM Thread Starter
ZGYJ
Registered User
1989 YJ Wrangler 
 
Join Date: Dec 2008
Location: Studio City
Posts: 72
Quote:
Originally Posted by YJ4LIFE View Post
i bought the same one off of rockauto. didn't use that heat through. went efi. I'd dremel those studs off and repaint that heat sheak with some high temp paint.
Got that part done, but I have a question for ya'all... the gasket kit I got for the manifold has a metallic side and a cloth side, am I right to assume the metallic side goes toward the manifold? I would think it would be hotter than the motor.

Also, there are two gaskets for the exhaust... my manual says nothing about these. One is an O ring.. and another... suggestions are appreciated!
ZGYJ is offline  
post #5 of 5 Old 05-07-2014, 12:49 PM
dcocch
Registered User
1989 YJ Wrangler 
 
Join Date: Jan 2012
Location: Minneapolis
Posts: 175
I am about 95% sure metallic side goes towards the exhaust manifold. I'd have to look when I get home though. I used the copper spray crap on mine. I have a 2.5L though so I can't help with the heater thing.
dcocch is offline  
Reply

Tags
exhaust , exhaust manifold , wrangler , YJ

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome