99 XJ 4.0 Exhaust Manifold Replacement

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Apr 12, 2016 | 09:52 AM
  #1  
Morning everyone,

I have a crack in my manifold and will be replacing it this weekend. Im new to XJ's and wanted to get opinions on which manifold to purchase:

This is what I am looking at currently as it has the flex joints.
http://www.quadratec.com/products/27601_06_07.htm


If anyone could give me some feedback on this particular manifold or if you have any other suggestions I would appreciate it.

Thanks,
Brett
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Apr 12, 2016 | 10:13 AM
  #2  
I've been wondering about the effectiveness of those flex joints on the two end pipes. The middle 4 are all solid to the collector so I question if there is any "flexing" of those joints at all? Seems like superfluous engineering.
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Apr 12, 2016 | 08:12 PM
  #3  
Can't speak to the parts but the stock design isn't awful and the pice is right. Headers are expensive and IMO just as likely to crack as the iron units.

I did this job a few months ago and boy was it a pain. Budget a day for this and be careful if you have to unbolt the power steering pump from the intake manifold. It's aluminum and if you cross thread a mounting bolt, enjoy the helicoil service. It's not super complex just time consuming. You will want a friend to help you too.
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