smog pump delete

89droptop · 11-20-2002, 11:05 PM

I am not interested is any type emission control for my car so I want to get rid of the smog pump. Is the smog pump labeled air pump on the sticker in front of the radiator. If so, can I just remove this and run a shorter belt or do I have to buy a smog pump eliminator kit. Also, if the pipe that comes off the smog pump is cut off from the h-pipe and just sitting open will it create a ticking noise similar to a exaust leak noise.

bigred90gt · 11-21-2002, 12:31 AM

I'm not sure about the label, I've never looked. I think you can just run a shorter belt, but I'm not 100% sure. But definately yes on the last question. I have a bassani o/r x and I melt the hose, that connects that tube to the tube coming off the pump, on a regular basis. The first time I melted it, I thought I had hit my x-pipe on a bump and tore a hole in it. It sounded horrible.

Caymon

89droptop · 11-21-2002, 12:42 AM

the pipe that comes off my prochamber is crimped and welded off, but the smog pump pipe is still open. Thats what I'm refering to when I talk about the ticking noise. Would that still make a noise.

84LX89GT · 11-21-2002, 01:53 AM

If you remove the smog pump, you will have to take the EGR crossover out from behind the cylinder heads and/or plug it up so exhaust doesn't escape from the cylinder heads (loud ticking exhaust leak). Also the smog pump is still pumping, so if you get rid of it, the noise you have should go away.

You can in fact, run just a shorter belt to bypass it. you can do the same with the power steering if you have A/C (just a useless fact). I have an air pump bypass pulley (Ford Motorsport), but it's just a waste of money, unless you feel like you have to use the stock length belt.

If i were you , i'd just get a shorter belt.

89droptop · 11-21-2002, 02:49 AM

The smog pump is the pulley thats on the passenger side underneath the alternator, right? And also, if I just run a shorter belt will I still have to plug or remove that egr crossover?

306bullet · 11-21-2002, 12:34 PM

For what it's worth, I have a Novi 2000 blower and I see no way of eliminating the smog pump. The way that they have the brackets set up, you have to have a pulley there. If anyone has any different ideas or an eliminator kit for sale, please let me know.

drudis · 11-21-2002, 12:57 PM

IF you can route the belt without rubbing or reversing the direction of pulleys... then its ok to do.
You will have to deal with the h-pipe tube. Either you can cut it off and crimp it shut... and then deal with the back of the heads with pipe plugs to block them off too.

Personally, I needed the dummy pulley cause of the S-trim..

and the old h-pipe was like this:

and the heads had the pipe plug from Home Depot:

Mustang_GT_90 · 11-21-2002, 06:37 PM

When we took mine off here's what we did. I took the smog off and I run a 69.5 inch belt because I also run a manual steering rack. The one you'll need will be around 85 inches or something like that. Then you'll need some kind of aftermarket H or X pipe, you don't want to do this mod if you still have cats because all it's going to result in is clogging the cats. After that you'll plug the tub in the h/x pipe. I'm like somebody else on this thread I have a mac prochamber and we just crimped the tube on the prochamber closed and hit it with a welder. After that you'll probably want to/need to get rid of the smog hoses. The easy way to do this is take them loose and then pull the little things off the back of the heads. They are little plates where the smog tube goes in. You'll take that and cut the metal tubes off of them with a hax saw, then switch them from side to side, left goes and right and vise versa, that makes it actually block off the port in the head like a metal stopper.
You're not gonna really see a power increase from this mod unless your pump is toast, you'll get an increase from the H or X pipe. The main reason I wanted to do it was to make it easier to work on the motor and get rid of the extra weight off the front of the car for weight transfer.
Overall the job took like 4 hours to put a set of equal length shorties, MAC Pro Chamber, and kill the smog pump and all the smog hoses. My friend that did it is a pro at this though and has done it to dozens of cars.

84LX89GT · 11-21-2002, 06:43 PM

Hey darius, i don't suppose you remember what thread the holes in the back of the heads were for the plug?
I retained the crossover parts that bolt to the head and welded them closed, but i'd like to just put actual plugs in the heads instead.

drudis · 11-21-2002, 09:22 PM

I think its a 3/8" plug (which looks more like a 1/2" diameter piece of bolt).

HiFlow5 0 · 11-22-2002, 08:46 AM

Nope not 3/8ths. The thread size of the thermactor holes in the back of the heads are 5/8" thread and about 1" long.

I seem to remember a thread exactly like this one last week.

Boondock Saint · 03-15-2010, 04:01 PM

I am also interested in this. In reading other spreads on doing this I came across people having trouble with alternator belt clearance when deleting the smog pump and using a shorter belt. My car is an 89 LX hatch w/o ac. has anyone else had to use and alternator relocation bracket to avoid clearance trouble or frying alt bearings?

11-20-2002, 11:05 PM	#1
89droptop Registered Member Join Date: Jan 2002 Location: Kennesaw, Ga Posts: 26	smog pump delete I am not interested is any type emission control for my car so I want to get rid of the smog pump. Is the smog pump labeled air pump on the sticker in front of the radiator. If so, can I just remove this and run a shorter belt or do I have to buy a smog pump eliminator kit. Also, if the pipe that comes off the smog pump is cut off from the h-pipe and just sitting open will it create a ticking noise similar to a exaust leak noise.

11-21-2002, 12:31 AM	#2
bigred90gt 2 Stangs in the Stable Join Date: Apr 2002 Location: Baytown, TX Posts: 1,209	I'm not sure about the label, I've never looked. I think you can just run a shorter belt, but I'm not 100% sure. But definately yes on the last question. I have a bassani o/r x and I melt the hose, that connects that tube to the tube coming off the pump, on a regular basis. The first time I melted it, I thought I had hit my x-pipe on a bump and tore a hole in it. It sounded horrible. Caymon __________________ '90 GT Under construction Best E.T. = Fast @ High Speeds - OK So I Lie. So What!!! 04 F-150 STX 4.2L 5 spd Rice Haters Club Member #128

11-21-2002, 12:42 AM	#3
89droptop Registered Member Join Date: Jan 2002 Location: Kennesaw, Ga Posts: 26	smog pump the pipe that comes off my prochamber is crimped and welded off, but the smog pump pipe is still open. Thats what I'm refering to when I talk about the ticking noise. Would that still make a noise.

11-21-2002, 01:53 AM	#4
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	If you remove the smog pump, you will have to take the EGR crossover out from behind the cylinder heads and/or plug it up so exhaust doesn't escape from the cylinder heads (loud ticking exhaust leak). Also the smog pump is still pumping, so if you get rid of it, the noise you have should go away. You can in fact, run just a shorter belt to bypass it. you can do the same with the power steering if you have A/C (just a useless fact). I have an air pump bypass pulley (Ford Motorsport), but it's just a waste of money, unless you feel like you have to use the stock length belt. If i were you , i'd just get a shorter belt. __________________ 2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock)

11-21-2002, 02:49 AM	#5
89droptop Registered Member Join Date: Jan 2002 Location: Kennesaw, Ga Posts: 26	smog pump The smog pump is the pulley thats on the passenger side underneath the alternator, right? And also, if I just run a shorter belt will I still have to plug or remove that egr crossover? __________________ 89 5.0 lx vert: Check out my mods and pics

11-21-2002, 12:34 PM	#6
306bullet Registered Member Join Date: Jul 2002 Location: Indiana Posts: 51	For what it's worth, I have a Novi 2000 blower and I see no way of eliminating the smog pump. The way that they have the brackets set up, you have to have a pulley there. If anyone has any different ideas or an eliminator kit for sale, please let me know.

11-21-2002, 12:57 PM	#7
drudis Moderator Join Date: Dec 1999 Location: Livonia, MI, USA Posts: 1,194	IF you can route the belt without rubbing or reversing the direction of pulleys... then its ok to do. You will have to deal with the h-pipe tube. Either you can cut it off and crimp it shut... and then deal with the back of the heads with pipe plugs to block them off too. Personally, I needed the dummy pulley cause of the S-trim.. and the old h-pipe was like this: and the heads had the pipe plug from Home Depot: __________________ Darius Rudis, Moderator Corner Carvers Delight 1989 Mustang LX - Open Track Car http://www.dariusrudis.com

11-21-2002, 06:37 PM	#8
Mustang_GT_90 Registered Member Join Date: Apr 2002 Posts: 68	When we took mine off here's what we did. I took the smog off and I run a 69.5 inch belt because I also run a manual steering rack. The one you'll need will be around 85 inches or something like that. Then you'll need some kind of aftermarket H or X pipe, you don't want to do this mod if you still have cats because all it's going to result in is clogging the cats. After that you'll plug the tub in the h/x pipe. I'm like somebody else on this thread I have a mac prochamber and we just crimped the tube on the prochamber closed and hit it with a welder. After that you'll probably want to/need to get rid of the smog hoses. The easy way to do this is take them loose and then pull the little things off the back of the heads. They are little plates where the smog tube goes in. You'll take that and cut the metal tubes off of them with a hax saw, then switch them from side to side, left goes and right and vise versa, that makes it actually block off the port in the head like a metal stopper. You're not gonna really see a power increase from this mod unless your pump is toast, you'll get an increase from the H or X pipe. The main reason I wanted to do it was to make it easier to work on the motor and get rid of the extra weight off the front of the car for weight transfer. Overall the job took like 4 hours to put a set of equal length shorties, MAC Pro Chamber, and kill the smog pump and all the smog hoses. My friend that did it is a pro at this though and has done it to dozens of cars. __________________ 90 Mustang, full weight, 5 speed, pulleys, 3.73 gears... 13.33@101 mph on stock motor and DOT's 12.44@112.5 on the juice. Check out our clubs website at http://www.stanggang.com

11-21-2002, 06:43 PM	#9
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	Hey darius, i don't suppose you remember what thread the holes in the back of the heads were for the plug? I retained the crossover parts that bolt to the head and welded them closed, but i'd like to just put actual plugs in the heads instead. __________________ 2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock)

11-21-2002, 09:22 PM	#10
drudis Moderator Join Date: Dec 1999 Location: Livonia, MI, USA Posts: 1,194	I think its a 3/8" plug (which looks more like a 1/2" diameter piece of bolt). __________________ Darius Rudis, Moderator Corner Carvers Delight 1989 Mustang LX - Open Track Car http://www.dariusrudis.com

11-22-2002, 08:46 AM	#11
HiFlow5 0 Registered Member Join Date: Mar 2000 Location: Springfield, Ma, usa Posts: 706	Nope not 3/8ths. The thread size of the thermactor holes in the back of the heads are 5/8" thread and about 1" long. I seem to remember a thread exactly like this one last week. __________________ NewEngland Auto www.baystategearheads.com -91 Mustang Coupe, ex 4cyl (sold) -99 F150, 3" lift, 35" Procomps, Magnaflow exhaust

03-15-2010, 04:01 PM	#12
Boondock Saint Registered Member Join Date: Mar 2010 Location: Canada Posts: 1	Re: smog pump delete I am also interested in this. In reading other spreads on doing this I came across people having trouble with alternator belt clearance when deleting the smog pump and using a shorter belt. My car is an 89 LX hatch w/o ac. has anyone else had to use and alternator relocation bracket to avoid clearance trouble or frying alt bearings?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
cobra smog delete	jwhite1993	Windsor Power	1	12-04-2003 04:41 PM
Smog Pump Confusion	Evil Joe	Windsor Power	1	03-23-2003 08:04 AM
Smog pump delete........Any ET gain????	Dark_5.0	Windsor Power	2	07-31-2001 09:52 PM
PLEASE HELP!! Do I need the smog pump system to pass dyno emissions ??	Stang_ROTY	Windsor Power	5	07-02-2001 01:09 AM
smog pump delete	DemonGT	Windsor Power	3	05-15-2001 09:09 PM