done with this smog pump
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Laughing Gas
Joined: Mar 2009
Posts: 1,028
Likes: 0
From: long island
done with this smog pump
my truck has been running like **** lately and I was poking around under the hood and realized my air injection rail is loose. If I rev the motor I can even watch the rail slide up and down inside the acorn bolts that screw into the head. ive replaced this once already and it still was never 100 percent. its getting deleted. so what id like to know is:
what size belt do I need when I remove the smog pump?
what have you guys been doing to plug the holes in the head? what size bolt do you use? ive heard of filling the existing acorn bolts with epoxy but I don't know if I like that idea.
1992 i6
ill take some pics and do a write up if nobodys done it yet. thanks!
what size belt do I need when I remove the smog pump?
what have you guys been doing to plug the holes in the head? what size bolt do you use? ive heard of filling the existing acorn bolts with epoxy but I don't know if I like that idea.
1992 i6
ill take some pics and do a write up if nobodys done it yet. thanks!
Post Fiend
Joined: Nov 2005
Posts: 7,437
Likes: 4
From: Charles Town, W bygod Va
On my 351 I think the fittings were 3/8 flare fitting.
NApa had plugs that screwed right in. I have also seen some cut the tube an inch or so above the fitting then smash it shut and fold it over.
NApa had plugs that screwed right in. I have also seen some cut the tube an inch or so above the fitting then smash it shut and fold it over.
Thread Starter
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Laughing Gas
Joined: Mar 2009
Posts: 1,028
Likes: 0
From: long island
Problem is the bolts arent even holding the tubes in place anymore. Smashing them shut would have been the first thing i did lol
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Laughing Gas
Joined: Mar 2009
Posts: 1,028
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From: long island
I got the head plugged up today. I ended up using 7/16 fine thread 1 1/2 inch bolts. It worked out pretty good because the heads stick out enough that they arent blocking the valve cover if it ever has to be removed. I teflon taped the threads and put some copper rtv on the ends of the bolts. Still on the fence about gutting the smog pump or what size belt to use.
Cargo Master
Joined: Nov 2013
Posts: 2,168
Likes: 4
From: South Central,MO
Dump the pump! Even if you gut it it will still seize up at the very time that you least need it to.
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Laughing Gas
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From: long island
Belt size?! 4.9 with a/c! I know somebody knows!
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Thread Starter
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Laughing Gas
Joined: Mar 2009
Posts: 1,028
Likes: 0
From: long island
I put everything back together and found a belt that fits. Wow this truck runs so much nicer. Its quieter and just sounds so healthier. If your reading this and you have a problem with your a.i.r. system, DELETE IT! 5060815 is the dayco part number for the belt i used. I have a 92 300 with ac and i was just able to squeek it on. It was close. Another size up would probably work. Ac works fine, plenty of contact on the pulley.
Cross-Country
Joined: Jan 2016
Posts: 61
Likes: 1
my truck has been running like **** lately and I was poking around under the hood and realized my air injection rail is loose. If I rev the motor I can even watch the rail slide up and down inside the acorn bolts that screw into the head. ive replaced this once already and it still was never 100 percent. its getting deleted. so what id like to know is:
what size belt do I need when I remove the smog pump?
what have you guys been doing to plug the holes in the head? what size bolt do you use? ive heard of filling the existing acorn bolts with epoxy but I don't know if I like that idea.
1992 i6
ill take some pics and do a write up if nobodys done it yet. thanks!
what size belt do I need when I remove the smog pump?
what have you guys been doing to plug the holes in the head? what size bolt do you use? ive heard of filling the existing acorn bolts with epoxy but I don't know if I like that idea.
1992 i6
ill take some pics and do a write up if nobodys done it yet. thanks!
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