|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
07-06-2022, 06:10 AM | #1 |
Senior Member
Join Date: May 2022
Location: Lakeland Florida
Posts: 377
|
1/4” or 5/16” Fuel Line?
My 38 has an 8BA. It has a replacement tank with 1/4” fuel lines.
I’ve read 5/16” is recommended for the 8BA. Will replacement tank accept 5/16”? |
07-06-2022, 08:15 AM | #2 |
Senior Member
Join Date: Jan 2011
Location: Central Ohio
Posts: 5,067
|
Re: 1/4” or 5/16” Fuel Line?
You'll probably not have an issue, though you could replumb the tank and put the larger line in. Also, check the fittings - as I've seen quite a few modern brass fittings with restrictions that are greater than what a 1/4" line would provide.
|
Sponsored Links (Register now to hide all advertisements) |
|
07-06-2022, 01:49 PM | #3 |
Senior Member
Join Date: May 2010
Location: Coral Springs FL
Posts: 10,944
|
Re: 1/4” or 5/16” Fuel Line?
In 1972 I installed an 8BA in my 40 Ford and used the stock 1/4 inch fuel lines, except that I did remove the stock flexible cloth covered rubber fuel line that fed the carbureator. Have never had any problems. Engines runs a Holley 460 four barrel.
|
07-06-2022, 02:41 PM | #4 |
Senior Member
Join Date: Dec 2010
Location: Tucson, AZ
Posts: 177
|
Re: 1/4” or 5/16” Fuel Line?
5/16 ID line has 1.57 times the area of 1/4 ID line. But does
the 8BA need the additional flow? |
07-06-2022, 03:18 PM | #5 |
Senior Member
Join Date: May 2010
Posts: 426
|
Re: 1/4” or 5/16” Fuel Line?
I used 5/16ths Cu line on my 38 and connected to the original tank with the proper 5/16 inverted nut. Have not had any vapor lock problems.
|
07-06-2022, 05:25 PM | #6 |
Senior Member
Join Date: May 2010
Location: Coral Springs FL
Posts: 10,944
|
Re: 1/4” or 5/16” Fuel Line?
Sponsored Links (Register now to hide all advertisements)
Read this thread and check out the fittings available should you decide to change. this fellow decided to go from 1/4 to 3/8 inch. https://www.jalopyjournal.com/forum/...o-3-8.1259369/ Last edited by 19Fordy; 07-06-2022 at 05:35 PM. |
07-06-2022, 05:26 PM | #7 |
Senior Member
Join Date: Jan 2011
Location: Central Ohio
Posts: 5,067
|
Re: 1/4” or 5/16” Fuel Line?
|
07-06-2022, 07:36 PM | #8 |
Senior Member
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 10,319
|
Re: 1/4” or 5/16” Fuel Line?
4160 Holley? How big? A 390 cfm?
|
07-06-2022, 08:50 PM | #9 |
Senior Member
Join Date: May 2010
Posts: 2,173
|
Re: 1/4” or 5/16” Fuel Line?
>>>I’ve read 5/16” is recommended for the 8BA.>>>
Yes, a bigger line is preferred after you reach 88 mph. |
07-08-2022, 10:52 AM | #10 |
Senior Member
Join Date: May 2010
Location: Coral Springs FL
Posts: 10,944
|
Re: 1/4” or 5/16” Fuel Line?
Yes, it's a 4160 Holley 390 "square bore" with #51 jets. List # 8007 with manual choke. It's about 20 years old.
Here's an excellent video on the differences between a Holley 4150 and a Holley 4160 carburetor. https://www.holley.com/blog/post/hol...rs_explained_/ I see now where you can buy a Holley Chinese made carb. Wonder how the quality is? Is anything made in the USA anymore? https://www.google.com/search?q=chin...&bih=881&dpr=1 and https://www.ebay.com/itm/NEW-390CFM-...-53200-19255-0 Last edited by 19Fordy; 07-08-2022 at 11:13 AM. |
07-08-2022, 02:40 PM | #11 |
Senior Member
Join Date: Sep 2013
Location: SoCal-Redlands
Posts: 3,020
|
Re: 1/4” or 5/16” Fuel Line?
1/4" line on the 8ba in my '39 p/u. Works fine.
__________________
Making the simple complicated for over 30 years. |
07-08-2022, 03:13 PM | #12 |
Senior Member
Join Date: May 2010
Location: Solihull, England.
Posts: 8,754
|
Re: 1/4” or 5/16” Fuel Line?
My 32 has 1/4" lines. It seems to run well at wide open throttle.
I don't know at which point 5/16" lines would become necessary, but I think a relatively stock flatty falls on the safe side of the line. |
07-09-2022, 10:20 AM | #13 |
Senior Member
Join Date: May 2010
Location: Chester Vt
Posts: 8,860
|
Re: 1/4” or 5/16” Fuel Line?
Not sure the size of the stock fuel line in a 46/48 ford. However we ran 370 cci Olda engine with tri carb intakes Clay smith super matchless Cam at the drags back in the late 50s. Might have gone faster with a bigger line, but didn't know any better.
Gramps |
|
|
Sponsored Links (Register now to hide all advertisements) |
|