bighause Posted January 23, 2010 Share Posted January 23, 2010 I need to replace my cracked manifold and can only find HO manifolds. It looks like the angle of the collector is different so I would need to change out the down pipe but is the rest the same? Will the EGR tube match up or should I keep looking for a non-NO manifold? Thanks Quote Link to comment Share on other sites More sharing options...
Eagle Posted January 23, 2010 Share Posted January 23, 2010 The newer ones don't have an EGR valve, so that's a problem. Also, the HO heads have the ports higher than the Renix, and the ports are shaped differently. People have been able to use the later manifold, but it's a kludge at best. Quote Link to comment Share on other sites More sharing options...
bighause Posted January 23, 2010 Author Share Posted January 23, 2010 Good to know, I guess I'll keep looking. Not sure I want to spend $300+ on a aftermarket header for a $1200 truck. Quote Link to comment Share on other sites More sharing options...
shelbyluvv Posted January 24, 2010 Share Posted January 24, 2010 Here ya go http://www.partsgeek.com/gbproducts/BN/2239-02019556.html?utm_source=google&utm_medium=ff&utm_term=89+1989+Jeep+Comanche+Exhaust+Manifold+Jeep+Exhaust+Manifold+4.0L+242+L-6+%28steel%29+Replacement+Exhaust+Manifold&utm_content=BYY&utm_campaign=PartsGeek+Google+Base Quote Link to comment Share on other sites More sharing options...
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