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Danny
Dodge Dakota
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2/16/2004
03:31:22
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 Subject: HIGH FLOW CAT?
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Well, the guy who owned my 92 before me must have wanted to be responsible for global warmin all by himself,cuz he dropped the cat. I dont know if it's just that or something else, but my exhaust really stinks, and it's kinda smokey. I was thinking a new cat would help out???? not real sure though. I added some ring seal to my oil and that isnt helping any yet(100 miles ago). I want to go with a high flow cat, but not sure about all the specs i should go with, i.e. pipe diameter. I have done a search and some people have said to go 1/4" larger than stock. Is this right. And also, what cat should i go with for good performance and decent price. I wanna also do a flowmaster 40 series, or dynomax mufflers after cat
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Will
Dodge Dakota
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2/16/2004
12:52:37
|  RE: HIGH FLOW CAT?
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Yes I whould get a high flow cat! That bad smell is Either burned oil or the polutants from the Emissons so when you put the cat on the polutant smell should go away. How many miles do you have on the truck? Do you drive it hard? If it has alot of miles and you drive it hard that smell is most likly oil!
Will
Page's Auto Shop
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Mark green 92
Dodge Dakota
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2/16/2004
13:07:43
| RE: HIGH FLOW CAT?
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Just some thoughts, the former owner probably had the old converter clog up and performed a shortcut to fixing the problem. Your exhaust smell is telling you that there is a problem. Check you intake for pan gasket leaks and if that is not your problem you may want to replace your valve stem seals, it was a problem on my truck. I had some blue smoke at startup, most noticeable after a hot restart and a compression test indicated that all cylinders were sealing. If there is a problem with ring seal, your oil will usually smell like gas, or exhaust. For the 92's there is no need to increase pipe diameter. Your inlet and outlet are 3" already and flow well for a 6. When discussing exhaust components everyone has their favorites but you can get a carsound (magnaflow) at a decent price from Husker High Performance (exhaustprosinc). Again for mufflers, do a search here, I think some people have linked sound clips if you are still undecided.
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Danny
Dodge Dakota
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2/16/2004
13:24:44
| RE: HIGH FLOW CAT?
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Q: Do I drive it hard?
A: Not really that hard, maybe every once in awhile, but the guy before me....From what i hear around town, he liked to get a little rough with it.
It has about 130000 on it. I'm sure its burning oil because i'm goin through it faster than i should and i checked and found no significant leaks. I definitely dont wanna just stick a cat on and pretend that the problem's fixed if it isn't. Where do i check for this leak in the intake?
Thanks Mark and Will for the replies and help.
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Mark green 92
Dodge Dakota
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2/16/2004
17:01:28
| RE: HIGH FLOW CAT?
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For a how-to on manifold leak checking, see Larry's post on a must read for all, https://www.dodgedakota.net/boards/v6/7930.html
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Greg
Dodge Dakota
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2/16/2004
21:25:17
| RE: HIGH FLOW CAT?
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One obvious thing that should be replaced as well are the o2 sensors since their most likely fried now from running rich... The running righ could also be a ressultant to the engine burning oil from the glaze being worn out of the cylinder walls and your piston rings have lost their seat:// Not good, because unless just barely burning oil "possible to reseat with some minor damage", but from the sound of it, unless it is your intake belly pan gasket, your going to have to have new rings and a cylinder job "rehoning" done... Hope for the best is all I can really say...
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