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Old 11-01-2011, 11:40 AM   #1
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Smog pump delete

Well ive decided to take advantage of kentucky not having an emissions law, as of now, and put an off road h pipe on my 95 cobra, does anyone have any tips or know how of how to easily and effectively remove and cap off the smog pump and lines? Thanks!
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Old 11-01-2011, 11:57 AM   #2
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Pretty interested in this too. Bump!
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Old 11-01-2011, 12:24 PM   #3
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You can get a shorter belt and just bypass it all togather

---------- Post added at 10:24 AM ---------- Previous post was at 10:22 AM ----------

If u are trying to shed weight or gain some extra space under hood u can have the line into your header welded up or get different headers. Trojan horse said it could be secured with a bolt and just disconnected
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Old 11-01-2011, 12:42 PM   #4
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What about the lines in the head? Im just confused as to how its done
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Old 11-01-2011, 12:55 PM   #5
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I wish I was by my car and I could explain it better and take pictures. It should be a pipe shaped somewhat like a y and my singled up and I just had a tip welded up to it( on my last foxbody) on my current I only bypassed smog with belt
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Old 11-01-2011, 03:05 PM   #6
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Re: Smog pump delete

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Originally Posted by jwhayne0001 View Post
What about the lines in the head? Im just confused as to how its done
Remove the lines from the heads, use a 5/8" x 11 Thread short bolt in each to plug the holes.
You will have to weld up or plug the lines to prevent an exhaust leak.
You may want to remove them intact in case you ever need them again.
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Old 11-01-2011, 03:16 PM   #7
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Old 11-01-2011, 03:37 PM   #8
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Quote:
Originally Posted by Trojan Horse

Remove the lines from the heads, use a 5/8" x 11 Thread short bolt in each to plug the holes.
You will have to weld up or plug the lines to prevent an exhaust leak.
You may want to remove them intact in case you ever need them again.
Thank you sir! Seems alot easier to do now, just gotta wait for christmas, made my american muscle list for the wife
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Old 11-01-2011, 04:10 PM   #9
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Re: Smog pump delete

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Big man in the house
Nah, just the old fart who's had to learn most of this stuff the hard way.
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Old 11-01-2011, 04:13 PM   #10
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Re: Smog pump delete

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Originally Posted by jwhayne0001 View Post
Thank you sir! Seems alot easier to do now, just gotta wait for christmas, made my american muscle list for the wife
You are welcome.
Since I re-read your initial post I see you are getting an aftermarket H-pipe. You should be able to remove the factory pipe intact with tubes and save it JIC you ever need it, no welding or capping required.
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Old 11-01-2011, 07:24 PM   #11
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Quote:
Originally Posted by Trojan Horse

You are welcome.
Since I re-read your initial post I see you are getting an aftermarket H-pipe. You should be able to remove the factory pipe intact with tubes and save it JIC you ever need it, no welding or capping required.
Just plug up the heads and go?

---------- Post added at 06:24 PM ---------- Previous post was at 06:19 PM ----------

Oh and the delete pulley?
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Old 11-01-2011, 07:31 PM   #12
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Re: Smog pump delete

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Just plug up the heads and go?

---------- Post added at 06:24 PM ---------- Previous post was at 06:19 PM ----------

Oh and the delete pulley?
Yes, + delete pulley or reroute the belt.
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Old 11-01-2011, 07:56 PM   #13
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Awesome sounds simple, are these bolts readily available at lowes or home depot? Anything i need to apply to the threads?
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Old 11-01-2011, 08:04 PM   #14
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Re: Smog pump delete

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Awesome sounds simple, are these bolts readily available at lowes or home depot? Anything i need to apply to the threads?
They should be.
You might put some blue loctite on them to seal them and keep them from backing out.
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Old 11-01-2011, 08:10 PM   #15
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Quote:
Originally Posted by Trojan Horse
They should be.
You might put some blue loctite on them to seal them and keep them from backing out.
Thanks again for sharing your experience with us! Will an H- pipe give me a low end rumble? Im pairing it with the flowmaster american thunder cat back
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Old 11-01-2011, 09:19 PM   #16
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Re: Smog pump delete

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Thanks again for sharing your experience with us! Will an H- pipe give me a low end rumble? Im pairing it with the flowmaster american thunder cat back
No problem.
Yes, the H-pipe will give you the low end rumble.
The X-pipe gives the higher pitched raspy sound.
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Old 11-02-2011, 12:37 PM   #17
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Quote:
Originally Posted by Stang.racr
You can get a shorter belt and just bypass it all togather

---------- Post added at 10:24 AM ---------- Previous post was at 10:22 AM ----------

If u are trying to shed weight or gain some extra space under hood u can have the line into your header welded up or get different headers. Trojan horse said it could be secured with a bolt and just disconnected
I heard somewhere that if u do this and shorter belt ur alt will spin to much and bad stuff could happen is this true cuz I want to get rid of my delete pulley and get shorter belt...and do this
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Old 11-02-2011, 12:41 PM   #18
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No it won't spin anything else any faster or slower, the crank pulley still turns the belt the same speed it would of before except without some of the parasitic drag of the smog, the only way to change the speed of the alternator is from underdrive pullys
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Old 11-02-2011, 12:56 PM   #19
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Quote:
Originally Posted by Stang.racr
No it won't spin anything else any faster or slower, the crank pulley still turns the belt the same speed it would of before except without some of the parasitic drag of the smog, the only way to change the speed of the alternator is from underdrive pullys
So its safe? There would be no diff with shorter belt and with my delete pulley?
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Old 11-02-2011, 01:11 PM   #20
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Quote:
Originally Posted by mystang50

So its safe? There would be no diff with shorter belt and with my delete pulley?
Yes it's safe, a lot of us have it done.
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Old 11-02-2011, 01:52 PM   #21
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Quote:
Originally Posted by 93slowstang

Yes it's safe, a lot of us have it done.
Should I leave delete pulley or go shorter belt
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Old 11-02-2011, 01:59 PM   #22
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That's up to you, if you get the del pulley your belt should stay the same, if you bypass it you will have to so some measuring or asking other guys on here what there belt # is
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Old 11-02-2011, 02:08 PM   #23
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Quote:
Originally Posted by mystang50

Should I leave delete pulley or go shorter belt
If you already have the delete pulley you wont gain anything by taking it out except a little more room. I didn't want to spend the money on a delete pulley so I bypassed mine.
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Old 11-03-2011, 08:28 PM   #24
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Yeah, on my 85 Gt I just capped the back of the heads with 5/8 11 thread pitch grade 8 bolts that were 1 1/4" long (shortest I could find) capped all vacuum lines associated with it, and unbolted the smog pump, hoses, and the little waste box bolted on the side) I bought an 84.5" belt part # 845K6 and just routed it like stock only it goes straight from the crank pulley to the alternator. Everything is running great with zero issues. I also have a BBK X pipe with flowmasters and cats.

Hope this helps. Good luck with everything!
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Old 11-06-2011, 08:31 AM   #25
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So nothing has to be done with the vacuum lines, or the EGR system right?
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Old 11-06-2011, 09:55 AM   #26
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I just capped off all vacuum lines associated with it. My car is carbed, so if your running efi, something may be different, but I dunno. All in all, it was very simple to do. As long as you don't have any random open vacuum lines in the end, you should be good to go. Wish I could be more help, but I've never actually worked with an efi mustang, so if there are some differences, I wouldn't know.
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Old 11-06-2011, 10:07 AM   #27
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Re: Smog pump delete

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I just capped off all vacuum lines associated with it. My car is carbed, so if your running efi, something may be different, but I dunno. All in all, it was very simple to do. As long as you don't have any random open vacuum lines in the end, you should be good to go. Wish I could be more help, but I've never actually worked with an efi mustang, so if there are some differences, I wouldn't know.
that part number, what store is it to? autozone? o'reillys?

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Old 11-06-2011, 01:24 PM   #28
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Re: Smog pump delete

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So nothing has to be done with the vacuum lines, or the EGR system right?
If you disconnect or remove the EGR you will need to get or make an EGR Eliminator to turn off the CEL and fool the ECU into thinking it is still there.

Search the forums for a diagram, or eBay for a complete unit.
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Old 11-06-2011, 04:19 PM   #29
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Here's the diagram for it. Figure I'll save some searching.
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Old 11-06-2011, 05:11 PM   #30
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Quote:
Originally Posted by Trojan Horse

If you disconnect or remove the EGR you will need to get or make an EGR Eliminator to turn off the CEL and fool the ECU into thinking it is still there.

Search the forums for a diagram, or eBay for a complete unit.
So its not required to remove the egr when removing the smog pump correct?
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Old 11-06-2011, 05:16 PM   #31
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Quote:
Originally Posted by jwhayne0001

So its not required to remove the egr when removing the smog pump correct?
No you can still keep it. It is a different system.
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Old 11-06-2011, 05:46 PM   #32
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Quote:
Originally Posted by wc3john

that part number, what store is it to? autozone? o'reillys?

Thanks
I'm assuming you're talking about the belt?? And if so, it is from advanced, and I think it works at Oreilly's as well. But when I went to oreilly's, they said they didn't have one in stock. Advance had one, and then I went to one on the other side of town the next day, and got a spare from the other advance.
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Old 11-07-2011, 08:21 PM   #33
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Re: Smog pump delete

i was looking at this: BBK Mustang Off-Road H-Pipe (94-95 5.0L) at AmericanMuscle.com - Free Shipping! and it says it comes with a rubber hose and fitting to connect to the existing smog pump, does this mean i can leave the pump on, and if i want to delete it just weld that fitting closed?
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Old 11-08-2011, 09:30 PM   #34
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Can a smog pump be bypassed the same way on a 90 fox?
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Old 11-08-2011, 10:28 PM   #35
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Yes, everything is the same except the sn95 cars have a bung on one of the headers.
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