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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 May 15, 2009 | 11:10 PM
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It begins...

I started tearing apart my truck today so I can swap in my new engine. I should have the rest of the hoses and wires removed tomorrow and my friend is returning my hoist on sunday to help me pull it. I also have a quick smog question. I am removing all the smog crap, can I just cap off the vent line that goes to the fuel tank or should I put on some kind of breather similar to an axle vent?


I also had a little fun with my bumper and the wifes jeep. My bumper wraps all the way around the front of it.
 
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Old May 16, 2009 | 02:50 AM
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You shouldn't cap off the vent line. You could get a check valve and and just run the hose to wherever. Just in case you rolled over, the check valve would keep the gas from leaking out the vent line.
 
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Old May 16, 2009 | 09:01 AM
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I agree. Don't just vent it overboard. That could create more problems than it solves. Why not just connect it to a charcoal canister and re-attach it to an intake vacuum source? It won't hurt anything and it will prevent an accidental discharge of fuel when you don't need it, like when you are upside down in a ditch.
 
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Old May 16, 2009 | 12:08 PM
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Ok, I'll cobble something together from my left over smog parts...gotta be a check valve in there somewhere.
 
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Old May 16, 2009 | 04:18 PM
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What I did was cap off the vent at the tank and bought a vented gas cap to keep from getting vapor lock. Then I removed all the rest. Works great no problems yet.
 
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Old May 17, 2009 | 03:12 AM
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I do have non oem locking gas caps, never checked to see if they were vented.

I was removing more crap from the old motor today and noticed I had twice as much air injection as I thought. I have/had 2 smog pumps, apparently one was pumping air into the exhaust manifolds and the other was pumping air into the back of the heads. I had seen both of these setups before, just not together.
 
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Old May 18, 2009 | 12:05 PM
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Dynamite works well. LOL
 
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Old May 18, 2009 | 12:17 PM
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I got the motor out yesterday. Everything is going so smoothly I am positive my new motor will explode upon startup. Looks like my bad rear main didn't contaminate my clutch and my non smog exhaust manifolds will bolt in without having to redo the exhaust pipe connections. I still have a bucketfull of oily dirty sludge to scrape out of the crossmembers though....yeah.
 
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Old May 21, 2009 | 11:49 PM
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Just a little update on my progress. I'm almost done putting the new motor together, got the new rear main in. I need to clean, paint and install the donor oil pan. I also scraped and scooped several pounds of oily sludge from the engine compartment, as thick as 1" in some areas. I also sent my bumper off to get rhino-lined while it was off. It looks awesome.


 
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Old May 22, 2009 | 12:09 AM
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From: Blue Eye, mo. hwy 86 & JJ
very cool!!! now when are you going to paint the truck? and what color?
 
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Old May 22, 2009 | 12:21 AM
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I had decided to do a two-tone black silver paint job until some (insert expletive here) decided to key my truck...some neighborhood watch program we have here. It took me less than a minute to sand it out and spray some more flat black on it, so I have ditched the fancy paint idea and am just gonna spray it with some flat back rustoleum. I figure the world will continue to be populated by these retards and I refuse to let them try and ruin something I worked hard on. I'll do a nice paint job on my mustang instead since it's garage kept.
 
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Old May 22, 2009 | 12:36 AM
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From: Blue Eye, mo. hwy 86 & JJ
that sucks, did you catch the little ******* who did it?
 
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Old May 22, 2009 | 12:43 AM
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My subdivision is full of kids of all ages and I'm not even sure when it happened, just know it happened at home. I dont drive my truck for days at a time and it was on the side facing away from my house.
 
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Old May 22, 2009 | 02:03 AM
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From: Blue Eye, mo. hwy 86 & JJ
nobody's keyed my truck yet (knock on wood) but i dont know if i could controll myself if i caught em, people just dont realize how much even the biggest peice of junk can mean to a person... IE my truck lol
 
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Old May 22, 2009 | 06:33 AM
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FWIW: I would not use a vented gas cap. It will not pass emissions if you have it, and is exactly what they are trying to avoid.

Connect the vent line to a vacuum source on the carb and let the vapors burn in the combustion chamber. It will not hurt anything and helps the environment.

I'm not a tree hugger but it's just a vent and you won't smell gas vapors around your truck when it gets hot and your fuel expands.
 
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