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-   -   Flex Cast Iron vs Flex Stainless ex Manifold (http://www.jeepforum.com/forum/f9/flex-cast-iron-vs-flex-stainless-ex-manifold-1152589/)

JeeporJag 01-12-2011 11:16 AM

Flex Cast Iron vs Flex Stainless ex Manifold
 
I will be cringing with ever bolt as I take out :fear: A previous owner installed a POS Banks exhaust manifold that now cracked. I am soaking the bolts with penetrating oil every night. Other “car” forums say cast iron is better because it won’t crack as easily. I don’t care as much about performance as I do reliability. Both manifolds below have the flex tube on 1 and 6. What is the general consensus of the Jeep forum advantages/disadvantage of cast Iron vs. Stainless?

Crown Exhaust Manifold cast Iron
PART#: 4883385 MFR#: 4883385
$124.29

A1 Auto Exhaust Manifold Stainless Steel
with Gasket Kit from 4.0L 242ci
$126

pcoplin 01-12-2011 11:25 AM

The tubular steel one is fine. I've used the $65 Ebay ones myself with success, but have heard of those cracking, too. My guess is they all do unless it's the 2-piece factory one, but that can be expensive and custom.

For the price, durability, and even comes with a gasket, I use the Ebay ones.
Ebay manifold

Knuckelhead 01-12-2011 06:31 PM

Get an OEM 2000+ one and have the "Y" pipe made at an exhaust shop...
http://i42.photobucket.com/albums/e3...ad/header1.jpg
http://i42.photobucket.com/albums/e3...ad/header3.jpg

alextremetj 01-12-2011 07:08 PM

Do you have any more pics of how your "Y" pipe is routed?

Knuckelhead 01-12-2011 07:47 PM

Quote:

Originally Posted by alextremetj (Post 10776126)
Do you have any more pics of how your "Y" pipe is routed?

It was routed the same as an OEM 2000+ "Y" pipe. That one was/is on a 97...


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