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Old 12-01-2017, 12:19 AM   #1
In The Ten Ring
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Made the pump to carb fuel line!

It's a 250 engine, not a V8.

Today I put the pump to carb fuel line together. The new AN fitting that goes into the carb fit perfectly but wouldn't allow the paper filter to fit inside. I'm a bit bummed about that but I did use an in-line filter I had bought some years ago from NAPA.

I put in a polyarmor piece with a fitting that screwed into the pump, cut the flare off the end, and slipped on a piece of 5/16 rubber hose. I had forgotten how to bubble flare so I just used a hose clamp.

I ran that over to a brass 5/16" to 3/8" union from Jegs, to a short 3/8" bit of hose, then to the in line filter, and more hose over to a -6AN hose barb fitting screwed into the carb inlet fitting. My connections are tight and straight.

I went on and bought a whole set of aluminum AN fitting wrenches, which I used two of, I think it's better to have the complete set of tools when you can.

I put the vacuum hoses back as those were before I removed the carb for rebuilding.

Wish me luck! Tomorrow dad and I plan to go for a start!

Last edited by In The Ten Ring; 12-03-2017 at 02:52 PM.
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Old 12-01-2017, 11:55 AM   #2
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Re: Made the pump to carb fuel line!

It didn't happen without pics...just sayin'......
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Old 12-01-2017, 12:01 PM   #3
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Re: Made the pump to carb fuel line!

What carb are you running?

The 3ft (I'm pretty sure) length of polyarmor is the perfect length to run from the mechanical fuel pump to the stock quadrajet (on a 350 motor) without cutting or flaring, just some bends.
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Old 12-01-2017, 05:03 PM   #4
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Re: Made the pump to carb fuel line!

Pictures are hard for me to get.

1). No smartphone.
2). This laptop no longer downloads pictures from my camera. It had a lot of viruses and a friend (programmer) fixed that but now the pictures won't download.

Carb is a Rochester Monojet with manual choke. It isn't original to the truck, as dad removed the automatic choke Monojet and added manual choke with this one. He did this about a year after buying the truck new, so about 1973.

I bought the shortest bit of polyarmor tubing I could get, about an 8 inch piece. I didn't want to bother with any bending as I plan to go to braided stainless steel line and all AN fittings next spring or summer.

During the failed start test just now, there are no leaks in the new line.
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Old 12-02-2017, 10:38 AM   #5
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Re: Made the pump to carb fuel line!


Ask Santa for a new phone
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Old 12-02-2017, 01:20 PM   #6
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Re: Made the pump to carb fuel line!

Not happening.

1). Smart phones turn people into addicts. (That's why I got rid of the one I had).
2). Smart phones cost a lot.
3). Smart phone use has been found to cause a lot of stress.

I'll get a pic up at some point, once I get to my other camera and get a pic downloaded to the other lap top.
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Old 12-02-2017, 10:32 PM   #7
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Re: Made the pump to carb fuel line!

I hope you are not using those inline filters with the glass housing and metal ends as they can be dangerous. Leak prone and the glass can break under vibration. Just watching out for ya, brother!
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Old 12-03-2017, 12:47 AM   #8
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Re: Made the pump to carb fuel line!

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I hope you are not using those inline filters with the glass housing and metal ends as they can be dangerous. Leak prone and the glass can break under vibration. Just watching out for ya, brother!
You know, I am getting really tired of all this "a fuel leak over the engine will cause a fire" nonsense! Everyone knows gasoline isn't that flammable!

Thanks man for the advice! No I knew about the dangers of the glass filters....I went with this thing here.

*I think I can get you guys a decent pic on my other camera tomorrow.
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Old 12-03-2017, 09:21 AM   #9
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Re: Made the pump to carb fuel line!

Good choice!Have had a few close calls with cheap fuel filters (Raised hood after long drive to see boiling fuel puddle on intake) in the past.
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Old 12-03-2017, 12:03 PM   #10
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Re: Made the pump to carb fuel line!

Quote:
Originally Posted by In The Ten Ring View Post
Pictures are hard for me to get.

1). No smartphone.
2). This laptop no longer downloads pictures from my camera. It had a lot of viruses and a friend (programmer) fixed that but now the pictures won't download.

Carb is a Rochester Monojet with manual choke. It isn't original to the truck, as dad removed the automatic choke Monojet and added manual choke with this one. He did this about a year after buying the truck new, so about 1973.

I bought the shortest bit of polyarmor tubing I could get, about an 8 inch piece. I didn't want to bother with any bending as I plan to go to braided stainless steel line and all AN fittings next spring or summer.

During the failed start test just now, there are no leaks in the new line.
I'm glad your fuel line is dry, but FWIW, the Russians are downloading your pictures now.
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Old 12-03-2017, 02:16 PM   #11
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Re: Made the pump to carb fuel line!

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I'm glad your fuel line is dry, but FWIW, the Russians are downloading your pictures now.
And somehow the Russians will use those pics to see Trump re-elected, right?

Literally 90 percent of all my pics on my two laptops are of 1967 to 1972 Chevy trucks! Most of those are closeups of how I took my truck apart or pics of other pieces so I could get an idea what to do with mine next. True though, if your computer is hooked to the internet, expect anything ever done on it to be copied. Already the US govt has used the Patriot Act to leak information on political targets to the press...just as expected.
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Old 12-03-2017, 02:34 PM   #12
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Re: Made the pump to carb fuel line!

I will stop before I get your thread shut down.
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Old 12-03-2017, 02:46 PM   #13
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Re: Made the pump to carb fuel line!

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I will stop before I get your thread shut down.
Not a bad idea.
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Old 12-03-2017, 07:42 PM   #14
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Post Re: Made the pump to carb fuel line!

I use a crappy iphone S5, sometimes it takes a while before the picture down loads .

FWIW, glass fuel filters DO NOT break from vibration, they cause troubles when mis installed or never serviced, etc.

I'd scrap that metal filter ASAP as you'll never know when it's dirty and these days I see more dirty fuel than ever, I often have to change fuel filters after a few hundren miles .

NAPA sells WIX brand filters, they're good and have clear plastic ones to suit and size hose on the shelf ~ buy two and toss the spare in the glovebox .

I too would like to see your hand made fuel pipe .
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Old 12-03-2017, 09:39 PM   #15
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Re: Made the pump to carb fuel line!

I could have taken a pic today but whenever dad is helping me do anything there just isn't time for pics! *He gets super annoyed when I do that.

If I stick with that fuel filter I will change it at least once every 3 years and maybe once every year.

New fuel line is leaking not at any connection I made but where the Autozone fitting screws into the pump! Geeze I just can't get a break! It's not a bad leak though.

***

Dad and I got the truck started! It turned out to be corroded/too widely set points. I guess those things just corrode over time, right? It has sat in my garage since 2005.
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Old 12-04-2017, 11:03 AM   #16
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Post Re: Made the pump to carb fuel line!

Tell you Dad that all the guys want the best advice from an old timer who knows.....

Every 12 months or 10,000 miles the fuel filter should be changed .
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Old 12-04-2017, 12:16 PM   #17
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Re: Made the pump to carb fuel line!

Quote:
Originally Posted by In The Ten Ring View Post
I could have taken a pic today but whenever dad is helping me do anything there just isn't time for pics! *He gets super annoyed when I do that.

If I stick with that fuel filter I will change it at least once every 3 years and maybe once every year.

New fuel line is leaking not at any connection I made but where the Autozone fitting screws into the pump! Geeze I just can't get a break! It's not a bad leak though.

***

Dad and I got the truck started! It turned out to be corroded/too widely set points. I guess those things just corrode over time, right? It has sat in my garage since 2005.
I started one the other day that had not been started since the nineties. The points were basically a pile of white dust. Electrolysis does crazy things.
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Old 12-04-2017, 12:57 PM   #18
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Re: Made the pump to carb fuel line!

Dad just couldn't remember what to do that first day out and he needed his testing light. Even though I copied and pasted the advice I got here into a word document I could view on the laptop in the garage, dad didn't really need any of it.

He's 75 years old and has trouble remembering at times.

It was a learning experience for me and thanks for all the advice. I bought all new parts today: points, condenser, button, distributor cap, spark plug wires....bought the best Advance Auto had. *Even got a Pureolator filter to replace the Fram.
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Old 12-04-2017, 03:36 PM   #19
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Re: Made the pump to carb fuel line!

Quote:
Originally Posted by VWNate1 View Post
I use a crappy iphone S5, sometimes it takes a while before the picture down loads .

FWIW, glass fuel filters DO NOT break from vibration, they cause troubles when mis installed or never serviced, etc.

I'd scrap that metal filter ASAP as you'll never know when it's dirty and these days I see more dirty fuel than ever, I often have to change fuel filters after a few hundren miles .

NAPA sells WIX brand filters, they're good and have clear plastic ones to suit and size hose on the shelf ~ buy two and toss the spare in the glovebox .

I too would like to see your hand made fuel pipe .
I think I’d have to somewhat disagree with the idea that a plastic or glass filter is a better option than a metal-encased one. Filters should be changed based on mileage/use/time interval, not when the fluid starts to look dirty. There’s a reason oil filters aren’t glass or plastic either. Vibration may not be the most likely cause of a glass filter break, but considering the risk of fire posed by the not-that-rare occurrence of one breaking for any reason, metal seems the best option - and GM has tended to agree over the years. There is a difference between “will not likely” shatter and “cannot” shatter. All can leak. But the instantaneous dump of a glass filter contents on anything hot is the issue, not dribbles. My 2 cents only, but nothing can convince me that there’s anything good about a glass filter. Plastic only a slight step above that, at least it can’t shatter - but it can melt, before metal anyway. So why risk it? I’d also submit that most dirt observed in a filter that can be seen through - within a few hundred miles especially - is more a result of dirt in the truck’s line system and tank as opposed to today’s so-called dirty gas. Again, my 2 cents only, but felt worth mentioning from a safety standpoint. I too have used glass filters and they never broke - but the risk was eliminated by eliminating the possibility of occurrence.

Last edited by jocko; 12-04-2017 at 04:05 PM.
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Old 12-04-2017, 04:35 PM   #20
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Thumbs up Fuel Filters

Fair enough Jocko ;

I have over 50 years of direct experience as a mechanic so my thoughts are based on and backed by that .

FWIW, glass bowl fuel filters were used on millions upon millions of vehicles and never had any inherent problems, they were only discontinued because of co$t ~ no other reasons .

America tends to have _very_ dirty gasoline , I have far more experience than I'd like with Customers having clogged fuel filters causing running problems .

It also causes premature fuel pump failure .

I always err on the side of caution, YMMV .

Few people drive 800 miles every seven days, I do so I get to see things in a different vein .
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Old 12-04-2017, 08:42 PM   #21
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Re: Made the pump to carb fuel line!

Thanks Nate, truly appreciate your experience - it provides a lot of help here on the forum. While glass bowls were common on every vehicle I've owned that was pre-mid-60's, and even my 59 Massey Ferguson 50 that I still have today, I'm basing my thoughts on an aviation background (not 50 years yet though ), which isn't all that different than automotive when you think about it, and on the fact that almost all mfgrs switched away from glass bowls at about the same time frame, and none eventually transitioned to plastic, which would have been even less expensive than metal. My "new" (2000's) dd still has a metal filter. Having said that, today's systems aren't exactly apples to apples comparisons, I realize that - high press for FI, etc. But, U.S. OEM carbureted systems never transitioned to plastic that I've seen, even long after plastic aftermarket ones were common. Some foreign cars had them though. Anyway, I still run the glass sed bowl on my 59 MF50 and I'm not losing any sleep over it - so I'm not that concerned with the risk - but on the truck, I guess I do prefer to eliminate the risk altogether. There have been automotive fires with glass filters as the cause, and I'd be willing to bet that some were factory installations. Consider a vehicle accident - a glass filter will not survive in some instances when a metal or plastic one will. Anyway, not trying to argue, your point is very well taken - they DID exist for years before mfgrs discontinued them, for whatever reason. But all the glass ones that came out in the 70's and continue to the 80's were more for looks than safety in my mind as a plastic one provides equal insight as to dirt level. And since the only way for a young kid to install a glass one today is to indeed to a home-made installation since our trucks didn't have them (which you point out is often incorrectly done) - I think they might be safer going with metal ones, or at least plastic. All good
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Old 12-04-2017, 08:55 PM   #22
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Thumbs up Re: Made the pump to carb fuel line!

Just so Jocko ;

Lots of good ideas here, best to get as much differing knowledge as you can then sort it out for your particular needs.....

That's how you wind up a Journeyman Mechanic , by doing and trying things .
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