gas tank

Farmall Cub Forum -- Questions and answers to all of your Cub related issues.

Moderator: Team Cub

Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.

gas tank

Postby dirtyred » Tue Aug 25, 2009 9:06 pm

Im puttin a new cutoff on my gas tank. is better to use teflon on the threads or can i use pipe dope like plumbers use? or what do i need to use?thanks
He that tilleth his land shall be satisfied with bread: Proverbs 12:11
User avatar
dirtyred
501 Club
501 Club
 
Posts: 1393
Joined: Sun Aug 02, 2009 11:52 am
Location: statenville ga
Zip Code: 31648
Tractors Owned: 1949 farmall cub (tinkerbell) 1949 allis chalmers(ole bess) 1949-50 ?john deere model a

Re: gas tank

Postby Rudi » Tue Aug 25, 2009 9:21 pm

Teflon tape is ok as long as it is on the threads only and there isn't any excess that can contaminate the fuel. Don't ask how I know that :roll: :( From reading different posts on the pro's and con's of tape versus pipe dope, I am leaning toward the pipe dope as the better choice. I recently saw that my local NAPA dealer actualy had it as well as my neighbourhood Fairview Fittings dealer.

I guess it is a matter of preference. Are you going to use a ball valve for a shut-off/petcock or that little L-shaped thingy :?: I have moved on to the ball valve and really prefer them. No seats to rebuild and no little L-shaped thingy's to drive me nuts from the neuropathy :lol:
Confusion breeds Discussion which breeds Knowledge which breeds Confidence which breeds Friendship

User avatar
Rudi
Team Cub
Team Cub
 
Posts: 28467
Joined: Sun Feb 02, 2003 8:37 pm
Location: NB Dieppe, Canada
Zip Code: E1A7J3
eBay ID: ve9rhs
Skype Name: R.H. "Rudi" Saueracker, SSM
Tractors Owned: 1947 Cub "Granny"
1948 Cub "Ellie-Mae"
1951 Cub "Jethro"
Dad's Putt-Putt
IH 129 CC
Circle of Safety Award
Circle of Safety: Y
Twitter ID: Rudi Saueracker, SSM

Re: gas tank

Postby dirtyred » Tue Aug 25, 2009 9:30 pm

I got a whole new shebang- ball valve,filter,sediment bowl. I got pipe dope aint got teflon so i reckon i lluse pipe dope thanks mr rudi
He that tilleth his land shall be satisfied with bread: Proverbs 12:11
User avatar
dirtyred
501 Club
501 Club
 
Posts: 1393
Joined: Sun Aug 02, 2009 11:52 am
Location: statenville ga
Zip Code: 31648
Tractors Owned: 1949 farmall cub (tinkerbell) 1949 allis chalmers(ole bess) 1949-50 ?john deere model a

Re: gas tank

Postby Yogie » Tue Aug 25, 2009 9:35 pm

You can get your fuel type teflon tape at Tractor Supply for a couple dollars, go that route and save yourself some trouble down the line later... :wink:
Image
Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote.
Ben Franklin
User avatar
Yogie
Cub Pro
Cub Pro
 
Posts: 5085
Joined: Sat Sep 08, 2007 3:49 pm
Location: WV. Ripley
Zip Code: 25271
eBay ID: yogiefisher
Tractors Owned: 37 John Deere A
63 Farmall Cub
53 Farmall Cub
Circle of Safety Award
Circle of Safety: Y

Re: gas tank

Postby dirtyred » Tue Aug 25, 2009 9:44 pm

the old one had teflon on it but it had what looked like shredded pieces of teflon? in the tank. I figured the gas would break down the teflon. But will the pipe dope hold up over time? what will pipe dope do if it gets in the tank? (Im clumsy ! I get oil, pipe dope pvc glue etc all over me! hence the dirty in dirtyred! :oops: )
He that tilleth his land shall be satisfied with bread: Proverbs 12:11
User avatar
dirtyred
501 Club
501 Club
 
Posts: 1393
Joined: Sun Aug 02, 2009 11:52 am
Location: statenville ga
Zip Code: 31648
Tractors Owned: 1949 farmall cub (tinkerbell) 1949 allis chalmers(ole bess) 1949-50 ?john deere model a

Re: gas tank

Postby Yogie » Tue Aug 25, 2009 9:49 pm

The fuel type teflon tape is made for this kind of area and it will give you better service. Gas will melt the regular type and then you'll have carb problems.
The pipe dope will stop up everything.
Just my .02 worth. :wink:
Image
Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote.
Ben Franklin
User avatar
Yogie
Cub Pro
Cub Pro
 
Posts: 5085
Joined: Sat Sep 08, 2007 3:49 pm
Location: WV. Ripley
Zip Code: 25271
eBay ID: yogiefisher
Tractors Owned: 37 John Deere A
63 Farmall Cub
53 Farmall Cub
Circle of Safety Award
Circle of Safety: Y

Re: gas tank

Postby redfin » Tue Aug 25, 2009 9:53 pm

I use either /or and they both work fine. :? Rudi makes a good point on keeping it out of the gas tank and Yogie makes a good point on taking it apart after using pipe dope. I usually use the pipe dope because I cant find the teflon tape most of the time as it is used by my fasmily and the neioghbors. Go figure that one.. :?
redfin
Cub Pro
Cub Pro
 
Posts: 4047
Joined: Mon Dec 17, 2007 6:25 pm
Location: LA, Gonzales
Zip Code: 70737
Circle of Safety Award
Circle of Safety: Y

Re: gas tank

Postby Don McCombs » Tue Aug 25, 2009 10:05 pm

Don McCombs
MD, Deep Creek Lake

"1950 Something" Farmall Cub
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A
1951 Farmall Super C w/FH
User avatar
Don McCombs
Team Cub Mentor
Team Cub Mentor
 
Posts: 10532
Joined: Mon Feb 03, 2003 6:45 am
Location: MD, Deep Creek Lake
Zip Code: 21550
Tractors Owned: "1950 Something" Farmall Cub
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A
1951 Farmall Super C w/FH
Circle of Safety Award
Circle of Safety: Y

Re: gas tank

Postby Rudi » Tue Aug 25, 2009 10:29 pm

The one thing I forgot to mention :oops: and I am not sure if this is really important or not seeing as the Teflon tape nor the pipe dope is actually supposed to come in contact with the fuel...

The pipe dope that I saw at NAPA and Fairview was for gas lines.. as in LNG or Propane. PFTE or the yellow Teflon tape is also for LNG or Propane lines.

Image

I don't see any thing really called out for gasoline, so I am assuming and Lord I hope I am not making a donkey of myself on this.. that because the fuel doesn't come in contact with the tape/dope it doesn't really matter? I am not sure.. but so far I have not had any issues when the tape is applied properly ie - 1 thread back from the end of the fitting.

I keep researching this though from time to time. I tried this as a search string Teflon Tape or Dope for Gasoline Lines and didn't get a lot of hits that I can see for the fuel line side of the question. However, I like Taunton Press for my Fine Woodworking and the Fine Homebuilding series.. so here is some stuff I found on the Taunton websites..

Image
Taunton's Fine Homebuilding wrote:Teflon tape for residential plumbing is color coded. High-density pink tape is used on water lines; yellow tape is designed for gas-line use. White tape (often low density) is used on water lines.


Image

Tauntons's Fine Homebuilding wrote:Tape is less messy, but there's a caveat: If wrapped wrong (in a counterclockwise direction), the tape can ball up as components are tightened, ruining the seal.


Image

Taunton's Fine Homebuilding wrote:Dope stays gooey. Pipe dope never hardens, so it will never become brittle and flake out of a joint.


From what I can gather reading a lot of this stuff on various forums including a Mitsubishi forumis that as long as it doesn't come in contact with the gasoline it should be ok. Teflon tape and dope was designed originally for NPT type fittings (which are most of what I use, so that works..) and should work on the NC and NF threads as well.

Boy this can get involved :? :roll: :)

Apparently the white crud I found in the bottom of my carb a while back was caused by the reaction of the benzene and cycloalkenes. But that is only if the tape is in contact with the gas when applied incorrectly as I had done once. You can see the white gooey residue in the bowl.

Image

Now that I understand the ramifications I use the 1 thread back method and I haven't had any leaks or any build up in the carb.

The other product that I found at NAPA is by Permatex.. but I haven't tried it yet.

Image

This is called out for fuel line fittings, so maybe this is what I will probably go to for pipe dope :idea:

Oh, I see Don just posted a link to the Permatex site as I was refreshing this to post. :oops:
Confusion breeds Discussion which breeds Knowledge which breeds Confidence which breeds Friendship

User avatar
Rudi
Team Cub
Team Cub
 
Posts: 28467
Joined: Sun Feb 02, 2003 8:37 pm
Location: NB Dieppe, Canada
Zip Code: E1A7J3
eBay ID: ve9rhs
Skype Name: R.H. "Rudi" Saueracker, SSM
Tractors Owned: 1947 Cub "Granny"
1948 Cub "Ellie-Mae"
1951 Cub "Jethro"
Dad's Putt-Putt
IH 129 CC
Circle of Safety Award
Circle of Safety: Y
Twitter ID: Rudi Saueracker, SSM

Re: gas tank

Postby Yogie » Wed Aug 26, 2009 5:41 am

:thumbsup:
Image
Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote.
Ben Franklin
User avatar
Yogie
Cub Pro
Cub Pro
 
Posts: 5085
Joined: Sat Sep 08, 2007 3:49 pm
Location: WV. Ripley
Zip Code: 25271
eBay ID: yogiefisher
Tractors Owned: 37 John Deere A
63 Farmall Cub
53 Farmall Cub
Circle of Safety Award
Circle of Safety: Y

Re: gas tank

Postby cubguy's dad » Wed Aug 26, 2009 6:07 am

I like and use the Permatex Product that Don recommends in his post.

This product is a one fits all type of product, as it is reccomended for pipe taper and stainless fittings as well as Cylinder head bolts that go into coolant passages.

As Rudi illustrated in his post, the use of any of these products properly and sparingly will save you from creating additional problems down the road.

Mark
Experiance is knowing what NOT to do the next time.......
1937 John Deere A (Big John)
1953 Farmall Cub (LiL Red)
Lots of projects.
cubguy's dad
5+ Years
5+ Years
 
Posts: 556
Joined: Sun Jan 04, 2009 5:41 pm
Location: MI Onsted
Zip Code: 49265
Tractors Owned: 1938 John Deere A
(owned 38 years)
1953 Cub
(owned 21 Years)
1963 Olds Cutlass
1970 Ford F-350
(Cub Hauler)

Re: gas tank

Postby daddydip » Wed Aug 26, 2009 7:26 am




i would think you'd want to go with don on this one period.. it's what it's made for so why fool and fumble with something that can cause headaches down the line. my .02 :wink: :)):
One Life , One Love , A Love Supreme

1955 michael e. pugh el

The only thing new is untold history, Harry Truman
User avatar
daddydip
5+ Years
5+ Years
 
Posts: 1802
Joined: Thu Sep 25, 2008 9:57 am
Location: Pa. southeast
Zip Code: 19320
eBay ID: 2001fltri
Tractors Owned: CC108

1948 farmall f cub
1955 farmall f cub
1955 international lo boy

1952 vai case

2005 236B Caterpillar

1999 TDI Jetta MK IV I like!
2008 H.D FLTRI


Return to Farmall Cub

Who is online

Users browsing this forum: Arthur Dent, chet larsen, Geezer, The Riot and 6 guests