is it safe to disconnect the exhaust pipe after the cats?

99FordRangerNC · #1 11-11-2012, 01:00 PM

hey yall, i was perty content with my magnaflow dual exhaust set up on my 99 ford ranger 3.0, till my buddy popped up with his 94 4.0. he had removed one cat and had about two feet of pipe on it and it sounded good, i wont much for loud exhaust on a v6 till i heard his. so my question is, i have a point in the exhaust line when i can unbolt the pipe. theres about a half a foot of pipe left after the cats where the sensor is, so if i can unbolt at this point and run the truck that way, will it damage the motor? i have read up on this and yes, i heard that its a federal offence if you remove the cats or do anything close to them, i live in NC and all that matters is if you can pass the Emissions test or not (ipassed this month), but if i run this set up just to be loud every once and a while, will i do damage to my engine? will it run lean or throw off the valves? i just want to run loud every once and a while if its gonna screw things up i wont touch it, i aint seen a clear answer on this topic yet just wanting to know, i got a 74 buick with a 350 chevy in it with open headers so yes i do know what good exhaust sounds like :P

current exhaust
https://www.youtube.com/watch?v=0EWmsICPTic

matt224 · #2 11-11-2012, 01:16 PM

Will sound like horse shit, especially with a 3.0. It won't float a valve or anything like that, so no, there is no danger to the engine.

I sure hope you do not have just open headers on that sbc, please tell me you have some form of exhaust piping on it. Besides sounding like a pissed off farm truck, its a great way to float a valve

99FordRangerNC · #3 11-11-2012, 02:04 PM

Quote:

Originally Posted by matt224

Will sound like horse shit, especially with a 3.0. It won't float a valve or anything like that, so no, there is no danger to the engine.

I sure hope you do not have just open headers on that sbc, please tell me you have some form of exhaust piping on it. Besides sounding like a pissed off farm truck, its a great way to float a valve

its a street legal drag being rebuilt right now, so just open headers, but its got a cam and lifters upgrade in it, its hotrodded

Devin-20 · #4 11-11-2012, 02:06 PM

Your current exhaust sounds fine, leave it how it is.

bigfisher · #5 11-11-2012, 03:55 PM

Quote:

Originally Posted by 99FordRangerNC

hey yall, i was perty content with my magnaflow dual exhaust set up on my 99 ford ranger 3.0, till my buddy popped up with his 94 4.0. he had removed one cat and had about two feet of pipe on it and it sounded good, i wont much for loud exhaust on a v6 till i heard his. so my question is, i have a point in the exhaust line when i can unbolt the pipe. theres about a half a foot of pipe left after the cats where the sensor is, so if i can unbolt at this point and run the truck that way, will it damage the motor? i have read up on this and yes, i heard that its a federal offence if you remove the cats or do anything close to them, i live in NC and all that matters is if you can pass the Emissions test or not (ipassed this month), but if i run this set up just to be loud every once and a while, will i do damage to my engine? will it run lean or throw off the valves? i just want to run loud every once and a while if its gonna screw things up i wont touch it, i aint seen a clear answer on this topic yet just wanting to know, i got a 74 buick with a 350 chevy in it with open headers so yes i do know what good exhaust sounds like :P

current exhaust
https://www.youtube.com/watch?v=0EWmsICPTic

The 3.0 wont sound good like that. His sounded good because of the 4.0. The 3.0 will sound like a weedeater
If you want it louder just dump it. It will cause some drone. I'm dumping mine tonight

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99FordRangerNC · #6 11-11-2012, 04:31 PM

Quote:

Originally Posted by bigfisher

The 3.0 wont sound good like that. His sounded good because of the 4.0. The 3.0 will sound like a weedeater
If you want it louder just dump it. It will cause some drone. I'm dumping mine tonight

Sent from my DROID X2 using FRF App

yeah, i think ill just stay with my magnaflow or maybe a flowmaster but when i get the money lol and good luck man

bigfisher · #7 11-11-2012, 04:41 PM

Quote:

Originally Posted by 99FordRangerNC

yeah, i think ill just stay with my magnaflow or maybe a flowmaster but when i get the money lol and good luck man

Yea you can cut out your magnaflow and clamp on a flowmaster. I had a maganflow on mine (si/so all i know about it) before I put my thrush on. Look at thrush if you want something thats cheap and sounds good

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gregbj33 · #8 11-11-2012, 04:48 PM

Quote:

Originally Posted by bigfisher

Yea you can cut out your magnaflow and clamp on a flowmaster. I had a maganflow on mine (si/so all i know about it) before I put my thrush on. Look at thrush if you want something thats cheap and sounds good

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X2 on the thrush(welded)

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99FordRangerNC · #9 11-11-2012, 04:52 PM

Quote:

Originally Posted by bigfisher

Yea you can cut out your magnaflow and clamp on a flowmaster. I had a maganflow on mine (si/so all i know about it) before I put my thrush on. Look at thrush if you want something thats cheap and sounds good

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yeah man, but i got some other stuff i got to do first lol

bigfisher · #10 11-11-2012, 05:02 PM

Quote:

Originally Posted by gregbj33

X2 on the thrush(welded)

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Thats what I got

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