Smog Pump?

Scrapla · 07-27-2002, 11:00 AM

I just installed a exhuast on my 90gt and wasn't sure how to plug up that hose that goes to the smog pump I guess its called so I reconnected it like the stock H pipe but I heard removale of that pump free's up some power can anyone help me out here as in how to remove it and plug up that connector on my H pipe.

PKRWUD · 07-27-2002, 12:28 PM

If your new exhaust has cats in it, leave the pump in.

Take care,
~Chris

Scrapla · 07-28-2002, 02:16 AM

it doesnt I have a off road H pipe

slo95 · 07-28-2002, 08:11 PM

if you leave it hooked up - ie. belt on the pulley - do not plug it. the pump will still be pushing air thru the hose and into the block. not good.
either leave the hose attached to the off road if you can or bypass the pump or use the smog eliminator kit. if you do the kit, plug the vacuum lines with screws/zip ties.

Stuart · 07-28-2002, 10:16 PM

Just a Quick Question-

I have a 95 gt with an off road x-pipe and it doesn't have a place to plug the smog pump hose into. So, I ran a copper tube down towards where it used to go just to get the sound of blowing air away from the firewall. Is this a bad thing, or is this ok. All it does is blow oxygen into the exhaust for emission purposes right?

Thanks,

Stuart

84LX89GT · 07-29-2002, 12:00 AM

I welded the smog injection tube on the h-pipe and replaced the pump with a Ford Racing idler pulley. A pulley is not necessary though, because you can take the pump off and just run a shorter belt. I had the pulley left over from the '84 5.0 i had so i threw it on since the belt was fairly new.
Anyways, if you get rid of it what you'll need to do is:
1. Plug the H-pipe tube from the air pump
2. Plug the air supply tubes to the back of the cylinder heads. (I pulled them off -one bolt per side, cut the tubes off 1" from the block part, crimped it together, cut it, welded it)
3. Pull off the smog pump
4. get a shorter belt, i believe corral.com has an article on running a shorter belt to bypass where the smog pump was.
hope this was of help

07-27-2002, 11:00 AM	#1
Scrapla Registered Member Join Date: Apr 2002 Location: Florida Posts: 532	Smog Pump? I just installed a exhuast on my 90gt and wasn't sure how to plug up that hose that goes to the smog pump I guess its called so I reconnected it like the stock H pipe but I heard removale of that pump free's up some power can anyone help me out here as in how to remove it and plug up that connector on my H pipe.

07-27-2002, 12:28 PM	#2
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	If your new exhaust has cats in it, leave the pump in. Take care, ~Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

07-29-2002, 12:00 AM	#6
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	I welded the smog injection tube on the h-pipe and replaced the pump with a Ford Racing idler pulley. A pulley is not necessary though, because you can take the pump off and just run a shorter belt. I had the pulley left over from the '84 5.0 i had so i threw it on since the belt was fairly new. Anyways, if you get rid of it what you'll need to do is: 1. Plug the H-pipe tube from the air pump 2. Plug the air supply tubes to the back of the cylinder heads. (I pulled them off -one bolt per side, cut the tubes off 1" from the block part, crimped it together, cut it, welded it) 3. Pull off the smog pump 4. get a shorter belt, i believe corral.com has an article on running a shorter belt to bypass where the smog pump was. hope this was of help __________________ 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)

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07-28-2002, 02:16 AM	#3
Scrapla Registered Member Join Date: Apr 2002 Location: Florida Posts: 532	it doesnt I have a off road H pipe

07-28-2002, 08:11 PM	#4
slo95 Registered Member Join Date: Dec 2000 Posts: 168	if you leave it hooked up - ie. belt on the pulley - do not plug it. the pump will still be pushing air thru the hose and into the block. not good. either leave the hose attached to the off road if you can or bypass the pump or use the smog eliminator kit. if you do the kit, plug the vacuum lines with screws/zip ties.

07-28-2002, 10:16 PM	#5
Stuart Registered Member Join Date: Jul 2002 Location: Washington State Posts: 8	Just a Quick Question- I have a 95 gt with an off road x-pipe and it doesn't have a place to plug the smog pump hose into. So, I ran a copper tube down towards where it used to go just to get the sound of blowing air away from the firewall. Is this a bad thing, or is this ok. All it does is blow oxygen into the exhaust for emission purposes right? Thanks, Stuart