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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

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Old Jun 18, 2009 | 10:52 PM
  #1  
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what is this

What is this?





and this?
(this one is more important than the other one)

 
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Old Jun 18, 2009 | 11:29 PM
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From: patricia ab canada
it bolts to the back of the air pump.that last picture is a check valve the supplies air to the exhaust.looks like it's rotten,and probably leaks as well.some one here knows how what size bolt you need to cap it off.and yes before you ask it's not doing anything,remove it.unless you need it for smog checks,it could get costly to repair.
 
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Old Jun 18, 2009 | 11:37 PM
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thanks, that answers it for me haha
i don't have any smog to worry about, and i was going to take it off because it is leaking and it's driving me insane.
should I try my luck at a junkyard? or try to find a way to seal that one up
 
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Old Jun 18, 2009 | 11:43 PM
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From: patricia ab canada
ther is a lagre bolt that will screw in there.just can't remember what size.or you can thake the tube off and put it on backwards with new gaskets,and will seal off the hole.cut the tubes off to.
 
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Old Jun 19, 2009 | 06:27 AM
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Is the hole in the back of the head the same as a big block?
5/8ths I think....
 
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Old Jun 19, 2009 | 08:10 AM
  #6  
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The thermactor threads are 5/8-11 UNC.

We usually put allen head set screws in there to block them off, or you can just go to your hardware store and get some 1" long bolts and use them. Put some locktite on them to prevent them from falling out.
 
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Old Jun 19, 2009 | 08:24 AM
  #7  
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Talking that thingy

Originally Posted by Jmeyer1990
thanks, that answers it for me haha
i don't have any smog to worry about, and i was going to take it off because it is leaking and it's driving me insane.
should I try my luck at a junkyard? or try to find a way to seal that one up

Just take it off and flip it side to side and it will put the blaoked side agins the holes and bolt it back on
 
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Old Jun 20, 2009 | 01:19 AM
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Thanks for the info.
I got tired of the sound, and im going to have to soak that for a few days haha, its rusted and stuck on there pretty bad.
so until then
2 dollar fixes
hooray for muffler repair kits haha

sounds so much nicer



Anyone have a recommendation for a top of the line penetrating fluid?
 
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Old Jun 20, 2009 | 01:25 AM
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Originally Posted by Jmeyer1990
Anyone have a recommendation for a top of the line penetrating fluid?
PB Blaster, Kroil, Liquid Wrench. All good.
 
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Old Jun 20, 2009 | 07:20 AM
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Originally Posted by Jmeyer1990
Anyone have a recommendation for a top of the line penetrating fluid?
I was brought up on Liquid Wrench, it works pretty well...

 
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Old Jun 20, 2009 | 07:56 AM
  #11  
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It may not matter to some of y'all, but...to some of us...especially CA residents, it does.

D4AZ9A487A .. Exhaust Air Supply Check Valve.

E3TZ9B289G .. Air By-Pass Thermactor Valve Assy (Motorcraft CX938).

Y'all know of course that there's talk in Congress of initiating a nationwide YEARLY smog test.

Here in CA, 1976 and newer, if the vehicle doesn't pass a smog test, it CANNOT be registered.

There are no more waivers for parts that are no longer available. CA sez: Fix it, or park it.

And...if you do park it, park it so the rear license plate cannot be seen from the street, because...

If the plate has an expired yearly tag on it, the polizei can have the vehicle towed away. Nein scheiss!
 
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Old Jun 20, 2009 | 09:47 AM
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Mass used to test all 84+ for smog on a dyno but now they only sniff OBDII. The inspector is supposed to check visually that all emission components are installed and operating and the MIL/check engine light is out.
One of the dumbest things the car companies ever did was install the air tubes into the cylinder heads. Its prone to failure and it has a minor effect on emissions vs adding air at the converter. I had to swap heads on a 350 that didn't have the holes for the tubes and just used the air tube to the converter. My sniffer test was slightly lower than the previous year.
my $.02
rikard
 
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Old Jun 20, 2009 | 10:38 PM
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Originally Posted by rikard
One of the dumbest things the car companies ever did was install the air tubes into the cylinder heads. Its prone to failure and it has a minor effect on emissions vs adding air at the converter.
One of the smartest things the car companies ever did was install the air tubes into the cylinder heads, because once these failed...usually well after the warranty had elapsed, they could sell 1000's of new ones.

FACT: All the automakers are REALLY in the parts biz, where over 75% of their real profits come from.

If parts last forever, no profits for automakers...it's as simple as that.
 
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Old Jun 20, 2009 | 11:12 PM
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Liquid wrench it is.
I shall go and get some next weekend.


...if I can finally find another job
 
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