The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1969 - 1972 Blazers and Jimmys Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-05-2017, 05:13 PM   #1
vancelot69
Registered User
 
vancelot69's Avatar
 
Join Date: Jul 2014
Location: Lakewood, Co.
Posts: 219
Gas tank inlet

The previous owner of my Jimmy said he replaced the gas tank, and without taking it off the truck, it looks to me like he didn't have the metal inlet tube moved to the new tank. I plan to drop it this weekend to see if I can find a leak and I'll see for sure if the metal tube is there or not. So, is it possible to get just the metal inlet tube? Would anyplace even braze it on a gas tank that has already been used?
__________________
My toys:
1971 GMC Jimmy
2008 Hummer H3 Adventure
2003 HD Road King
vancelot69 is offline   Reply With Quote
Old 05-05-2017, 06:49 PM   #2
tjsblazer
Registered User
 
tjsblazer's Avatar
 
Join Date: Oct 2009
Location: Great White North
Posts: 1,520
Re: Gas tank inlet

You can not buy new the metal inlet that get around the body mount. People typically move one from their old tank to a new aftermarket tank because they are usually in good shape while the rest of the tank is rusted out.
Sometimes a used tank is listed on the parts board from a part out or someone switching EFI. They typically get bought just for that inlet.
__________________
Jeff.

'72 Blazer K5

"Camshaft opinions are like belly buttons; everyone has one and no two are alike"

My Blazer Build:
http://67-72chevytrucks.com/vboard/s...d.php?t=626752

My Engine Build:
http://67-72chevytrucks.com/vboard/s...d.php?t=637336
tjsblazer is offline   Reply With Quote
Old 05-06-2017, 08:15 AM   #3
jaros44sr
Senior Member
 
jaros44sr's Avatar
 
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,762
Re: Gas tank inlet

That's the iffy part, hard to say if some one would solder it on, always a chance for an explosion. Maybe a soldering iron, but who knows where the explosion temp. is!!!
__________________
Semper Fi...Uncle Sam, you da man

All parts offered to help are free, unless otherwise noted

Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training
SAFETY FIRST

AS usual, off topic

They say your mind goes second, can't remember the first


Jim
jaros44sr is offline   Reply With Quote
Old 09-05-2017, 12:49 PM   #4
vancelot69
Registered User
 
vancelot69's Avatar
 
Join Date: Jul 2014
Location: Lakewood, Co.
Posts: 219
Re: Gas tank inlet

Yeah. Still haven't got around to dropping the tank to verify. Assuming it's not there, if I want to attach a metal inlet neck, I'll probably have to get a new tank too, or have this one reconditioned, huh?
__________________
My toys:
1971 GMC Jimmy
2008 Hummer H3 Adventure
2003 HD Road King
vancelot69 is offline   Reply With Quote
Old 09-05-2017, 05:24 PM   #5
raggedjim
Senior Member
 
raggedjim's Avatar
 
Join Date: Jun 2002
Location: Murray, Kentucky
Posts: 3,478
Re: Gas tank inlet

You can drop your tank, get all the gas out and fill the tank with water before you start soldering, I've done it a few times on motorcycle tanks (it's still kinda scary striking an arc on a tank, even filled with water!)

I copied this from a post by stick72. I dont see why this would not work

"$15.00 potential solution

I picked up a couple of copper 1 1/4 street ells. The "big" end is a perfect slip fit over the tank inlet, the "small" end is 1 3/8 OD, so its a perfect receptor for the gas hose.

I had to trim about a inch off the tank filler tube to insure no interference with the frame or body mount, but I suspect no two of these import tanks are the same so this might not work for everyone.

I researched copper for gas line, but the only reference I could find was that the coast guard requires copper line on boats, maybe it's preferred in saltwater environments. Anyone know of any issues using copper?

Still have to figure out a better solution on the straps....."
Attached Images
 
__________________
Roger

'68 Short step - https://67-72chevytrucks.com/vboard/...d.php?t=849675
'69 ('70?) 2wd Blazer
'70 GMC Jimmy 2wd
'73 Firebird - https://67-72chevytrucks.com/vboard/...d.php?t=853203
Ideas - https://67-72chevytrucks.com/vboard/...d.php?t=851743
raggedjim is offline   Reply With Quote
Old 09-27-2017, 12:42 AM   #6
Spf79
Registered User
 
Spf79's Avatar
 
Join Date: Jun 2016
Location: Vancouver, Washington
Posts: 421
Re: Gas tank inlet

Awesome idea!

I just dropped off my old tank and new tank in order to have their necks switched... had I thought of the copper trick i would have jumped on it!

I deal with copper tubing a fair amount when at work, the copper will not degrade - gas will have no effect on the material. I might be worried about the sweat connection from the copper to steel neck on the new tank cracking over time due to road vibrations and becoming a leak point?

Again, I wish I would have thought of this.
Attached Images
 
__________________
Full top blazer or bust....
Spf79 is offline   Reply With Quote
Old 09-27-2017, 07:43 AM   #7
A1971Blazer
Senior Member
 
A1971Blazer's Avatar
 
Join Date: Nov 2013
Location: East Tennessee
Posts: 2,199
Re: Gas tank inlet

My K/5 had a replacement tank when I got it...the hose was crammed and kinked so bad that it was almost impossible to put fuel in....

I had to fix my sending unit anyway so I dropped the tank and ordered some pre-formed 45º hoses and a coupling from here:

http://www.fillernecksupply.com/1-3-...ler-neck-hose/

I cut about an inch off the straight neck on the tank and modified two of the 45º hoses to come out across the frame rail in the same location as the original.....it now fills with no problem....

Although I had an original steel neck that was in good shape, that I had melted off an old tank.....

I decided not to go through all the hassle of putting it on the new tank because it already had fuel in it and would have to be drained and cleaned before applying heat to it....

And yes..I sold the neck to a member in Alaska.....
Name:  IMG_1550.jpg
Views: 313
Size:  29.7 KB
__________________
1967 C10 Step side
1968 C10 Step side
1970 Chevrolet K/5 Blazer
1972 Chevrolet K/5 Blazer
.............
A1971Blazer is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 09:26 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com