SMOG pump delete?
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From: Germantown, MD
SMOG pump delete?
You've probably seen this thread before a few times... I've been looking at similar threads for some answers, but I didn't really get any.
I have an '86 F150 with a 302 efi. Once I noticed the exhaust valve connected to the smog pump was rusted off, it got me thinking. Should I disconnect the pump and all the hoses instead of replacing this valve, or should I replace the valve, and keep all the smog crap? I'm thinking maybe the pump is bad, and thats why the valve is destroyed and no longer connected. Nonetheless, I'm not concerned with emissions, so should I disconnect the damn thing and save my engine form worthless additional stress and wear? Not to mention, what kind of power gains am I looking at?
I have an '86 F150 with a 302 efi. Once I noticed the exhaust valve connected to the smog pump was rusted off, it got me thinking. Should I disconnect the pump and all the hoses instead of replacing this valve, or should I replace the valve, and keep all the smog crap? I'm thinking maybe the pump is bad, and thats why the valve is destroyed and no longer connected. Nonetheless, I'm not concerned with emissions, so should I disconnect the damn thing and save my engine form worthless additional stress and wear? Not to mention, what kind of power gains am I looking at?
Postmaster
Joined: Dec 2006
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From: Spokane, WA
Probably best to replace the part and make sure all parts of the system are working properly. If you remove the smog equipment it's almost an all or nothing proposition with definitely having to recurve the dizzy for non-emissions plus backing up a year or two and using a non-feedback carb.
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From: sunny fla sometimes windy
remove the cat and the hoses that connect to the back of the heads. The cat needs
the air sometimes to help it burn the rich exhaust. There are bolts made to block the
holes left in the heads but you can just cut some down to fit. Plug all the vac lines
leave the solenoids hooked up. Removing a cat and emissions is a federal crime when
you go to sell it or if you get pulled over by DOT or a wise sheriff it can be a hefty
fine!!
the air sometimes to help it burn the rich exhaust. There are bolts made to block the
holes left in the heads but you can just cut some down to fit. Plug all the vac lines
leave the solenoids hooked up. Removing a cat and emissions is a federal crime when
you go to sell it or if you get pulled over by DOT or a wise sheriff it can be a hefty
fine!!
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From: Germantown, MD
Hmm thanks. I think I'll remove all that stuff. But, how about hooking the SMOG pump up to an air tank? It'd be like a portable compressor, which would be nice for off-roading. You could use it to pump up your tires after you let the air out to get through mud or whatever. Just a thought... Has anyone tried this?
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i removed all the smog equipment from a 87 econoline with a 460 and a 4180c carb. and i found a port on the carb with no vacume at idle and used that as my vacume advance and it runs fine. I could see having to recurve the distributor if you change the timing gears and ran a diff carb, but i don't think its real critical if your running all the stock stuff as long as you have some kind of port that doesn't have full vacume
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From: Virginia
Originally Posted by 86stepsideF150
Hmm thanks. I think I'll remove all that stuff. But, how about hooking the SMOG pump up to an air tank? It'd be like a portable compressor, which would be nice for off-roading. You could use it to pump up your tires after you let the air out to get through mud or whatever. Just a thought... Has anyone tried this?
Posting Guru
Joined: Nov 2004
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From: sunny fla sometimes windy
Yeah unfortunately it is only like 8 psi above atmosphere pressure, Run the line to your intake for a bit of pressure in the intake!! probably would only work off idle since
it doesn't flow many cfm! But hey why not I would have done it if my pump wasn't froze up from having the belt disconnected for who knows how long!! Or vent it to in
front of the ignition module to help keep it cool. Or remove it and put a alternator on
the mount and convert that to a welder like this http://mywebpages.comcast.net/t.molnar/Obwelder1.htm
Which would probably be more useful, I am keeping my eye out for one at yardsales
and peoples houses If I can get one for free all the better!!!
it doesn't flow many cfm! But hey why not I would have done it if my pump wasn't froze up from having the belt disconnected for who knows how long!! Or vent it to in
front of the ignition module to help keep it cool. Or remove it and put a alternator on
the mount and convert that to a welder like this http://mywebpages.comcast.net/t.molnar/Obwelder1.htm
Which would probably be more useful, I am keeping my eye out for one at yardsales
and peoples houses If I can get one for free all the better!!!
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From: Germantown, MD
HAhaha yea. It could be put to use for something more useful than decreasing emissions, I'm sure. Well, I disconnected that belt and the AC compressor belt (mine AC doesn't work, and it's winter anyways). Is there any more I should do regarding the SMOG?
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From: Germantown, MD
Originally Posted by weswes01
i have done all of that. but what about the egr? i made a block off plate and pluged the vacuum line. should i have left it conected?
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