Cracked exhaust manifold - DodgeForum.com


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Cracked exhaust manifold

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  #1  
Old 06-04-2012, 12:36 AM
TGoodwin
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Default Cracked exhaust manifold

Hello,

I recently started getting an intermittant check engine light. The code came back as a #8 cylinder misfire. Looking over the engine I ran across this.

This is a 98 Dodge Ram 1500 5.9l Magnum. Is this a common problem on this model?
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Last edited by TGoodwin; 06-04-2012 at 12:42 AM.
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Old 06-04-2012, 12:42 AM
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Ham Bone
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That's a great excuse to get some good shorty headers and a new, better flowing y-pipe.

You can thank me later
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Old 06-04-2012, 01:39 AM
SilverSS
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Lol yep good excuse for headers! Not a common problem as far as I know. Mine are fine. If you don't want to get headers an exhaust shop should be able to weld it cheap.
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Old 06-04-2012, 02:33 AM
TGoodwin
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Default Headers

LOL

Yeah I already changed the stock manifolds out for some headers.

http://i1068.photobucket.com/albums/...0606200110.jpg

Last edited by TGoodwin; 06-15-2012 at 02:06 AM.
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Old 06-04-2012, 09:38 AM
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You need to adress the y-pipe if you want to see any serious performance gains. It's rather restrictive
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Old 06-08-2012, 08:17 PM
TGoodwin
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Well I went ahead and bought a Flowmaster cat-back, plenum repair kit, new NGK O2 sensor, MSD 8.5 plug wires, NGK iridium plugs, Harland Sharp 1.7 rockers and Superchips programer to go with the new Gibson headers. So I guess I will keep the truck for a while. :-)

http://i1068.photobucket.com/albums/...0606200158.jpg

Last edited by TGoodwin; 06-15-2012 at 02:08 AM.
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Old 06-08-2012, 08:23 PM
TGoodwin
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Default Y pipe

Quote:
Originally Posted by Ham Bone View Post
You need to adress the y-pipe if you want to see any serious performance gains. It's rather restrictive
So I see a bunch of Y-pipes. How do I figure out which one is better flowing?

Thanks

Ted
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Old 06-08-2012, 08:51 PM
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The off-road y-pipe (no cat) flows best. If you can get away with that where you are, go for that one.

Otherwise, post links to the candidates.
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Old 06-09-2012, 04:44 AM
ReadRam
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OP were there any other symptoms from the cracked exhaust manifold as i get intermittent cel #8 misfire?
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Old 06-09-2012, 10:27 AM
TGoodwin
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Quote:
Originally Posted by ReadRam View Post
OP were there any other symptoms from the cracked exhaust manifold as i get intermittent cel #8 misfire?
Heavy pinging under load. Slugish performance. Rattle sound coming from the cat sometimes during idle. Oil usage with no external leaks to account for it. The #8 plug was not excessively fouled compared to the other cylinders but the plugs were worn and due for replacement.

The truck is in very good condition with 108k miles on it.

I do not drive the truck daily to work and am doing a little bit at a time. I now have the plugs, wires, headers, and rockers installed. I hope to get time to do the intake kit install today.
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