Re: Who is running cat converters?
[Re: Hot 340]
#2029574
03/12/16 01:19 AM
03/12/16 01:19 AM
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Joined: Nov 2010
Posts: 3,696 jersey
Spaceman Spiff
master
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master
Joined: Nov 2010
Posts: 3,696
jersey
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Im considering installing them just to kill the awful smell pump gas makes these days. I even get around my car after its been run and i can smell the fumes on me. And no its not an overly rich condition. Anyone run the 3" cats and did they kill a lot of power? what's the combination, and how do you know it's not a rich condition? have you check using a gas analyzer?
526 cubes of angry wedge, pushbutton shifted, 9 passenger killer!
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Re: Who is running cat converters?
[Re: ahy]
#2029596
03/12/16 01:52 AM
03/12/16 01:52 AM
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Joined: Dec 2006
Posts: 3,395 Pa
Hot 340
OP
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OP
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Joined: Dec 2006
Posts: 3,395
Pa
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With a high overlap cam, ignition timing helps clean up the idle. 20 degrees as a ballpark. With timing set, carb tuning helps. Still, there may be some smell. I have it with a 243 degree @.050 cam. Nature of the beast. Probably not an issue with intake duration of ~220 degrees or less.
I hear ya. Mine is a custom Bullet cam with 255@ .050. I have a custom carb that will do anything i want it to as far a getting rid of a rich condition. It reeks ( more or less)no matter where i put it. My last car was a 5.0 mustang with fuel injection. With the cats you could stand behind the car all day. With the cats off via off road h pipe it would still gag ya, and it was clean burning.
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Re: Who is running cat converters?
[Re: Hot 340]
#2029661
03/12/16 04:32 AM
03/12/16 04:32 AM
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Joined: Aug 2005
Posts: 5,999 Salem
Grizzly
Moparts Proctologist
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Moparts Proctologist
Joined: Aug 2005
Posts: 5,999
Salem
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I hear ya. Mine is a custom Bullet cam with 255@ .050. I have a custom carb that will do anything i want it to as far a getting rid of a rich condition. It reeks ( more or less)no matter where i put it. My last car was a 5.0 mustang with fuel injection. With the cats you could stand behind the car all day. With the cats off via off road h pipe it would still gag ya, and it was clean burning.
For sure. My stock 360 Magnum EFI without a cat and it stinks too. Everything from my 1 bbl to 6 bbl make your eyes water. But, (quote from an online SRT Engineer session) converters cost 25 hp. I've also noticed that alot of the older engines left in production with converters (like the Magnums) crack heads. I've even run into a fellow that had it happen on a 5.7 hemi. Your best option is to run leaded fuel, that's what I do.
Mo' Farts
Moderated by "tbagger".
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Re: Who is running cat converters?
[Re: Hot 340]
#2029800
03/12/16 03:04 PM
03/12/16 03:04 PM
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Joined: Jul 2006
Posts: 4,319 Puyallup, WA
StealthWedge67
master
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master
Joined: Jul 2006
Posts: 4,319
Puyallup, WA
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Im considering installing them just to kill the awful smell pump gas makes these days. I even get around my car after its been run and i can smell the fumes on me. And no its not an overly rich condition. Anyone run the 3" cats and did they kill a lot of power? If you can smell fumes on you, you've got tune issues. Its not the gas.
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
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