68 FJ40 Gas tank to fuel line connector question

[Trippster]

My 68 restoration came with a 283 conversion already installed. I put in a 350 with an EFI requiring a 3/8 fuel line. I’m in need of a fuel line connector with a 3/8 barb. CCOT sells the 1/4 barb and does not offer a 3/8.

What size is the thread for the connector ??? 12mm 1.25 pitch?? CCOT says it’s 12mm but they don’t know the pitch.

I found 12mm 1.25 on line but they don’t fit???? I’m at a loss

Any help would be appreciated

Thank you

Ben

 

[Krondor]

There is some confusion on the outlet size of the fuel tank. Some say its 12mm. I believe Coolerman states in some earlier threads that it is 13mm x 1.5mm thread.

FJ40 Fuel Tank Nipple Size?

Hi All, I'm having problems finding a fitting to go on the fuel tank in my 1970 FJ40. I have searched all the autoparts stores in town, the closest we can get is 1/4-inch. It doesn't fit quite right, I believe it has to be metric. I have looked in both the repair manuals I have, but no luck...

forum.ih8mud.com

This is a pretty impossible fitting to find which is why SOR and CCOT can charge what they charge for a small fitting. Although I believe that the fittings on both the SOR and CCOT fittings only come in 1/4" barbs.

As for a solution. you might be able to get a machine shop to manufacture the correct fitting. It might take some trial and error though.

 

[Trippster]

Thank you very much,

Thats a great starting point and good information. I’ll give it a go today!

Much appreciated

Ben

 

[Jdc1]

There is a solution buried deep in mud that is less than $5 I’ll see if i can dig it up. I’ll post the Parker Hydraulics number when I get a few. @Trippster , PM me your address, i’ll send you one on the house.

 

[Trippster]

You got it

 

[Jdc1]

 

[Trippster]

That’s a nice one! so to be clear, that has the 3/8 fuel barb??

 

[Jdc1]

That’s a nice one! so to be clear, that has the 3/8 fuel barb??

Its 5/16” barb. I just used one on my Sniper install with 3/8” fuel injection line. It’s pretty rigid and worked well.

 

[Trippster]

Awesome!!!! I’ve been looking for that for a very long time.

Yes sir, I’m running MSD Atomic. I’m so glad I found you!

I greatly appreciate your help!

Ben

 

[Attilio]

FYI, the CCOT one is not the two piece acorn style like my tank connection. Perhaps sealant would suffice?

 

[Coolerman]

So to settle the question once and for all: What are the specs on that 5/16" barb fitting? 12mm x 1.5, 13mm x 1.5, BSBP or what?

 

[EmanC]

Threads on the tank are M13x1.5

OEM Parts are

Nut - 90402-13041
Olive - 96395-71400
Barb - Unsure if available.

Ive welded up the nut to make a block-off plug when installing an in-tank setup.

 

[Coolerman]

Well I guess I can measure after all...

 

[Trippster]

Thanks for all the info, My 3/8 line is holding fine so far…… I’ll let you know how it goes when I get it started this year….fingers crossed

 

[bemerritt]

Thanks for all the info, My 3/8 line is holding fine so far…… I’ll let you know how it goes when I get it started this year….fingers crossed

Just wanted to follow up on this. Any leaks? Anyone have a new solution? Not seeing much in terms of thread type online lining up with the metric threads posted here, so just wanted to check in on it before ordering. Thanks!

 

[Trippster]

I haven’t cranked it yet, but getting close. The 3/8 hose on the barb is a little loose but north bad. The clamp works well and holds good.

Just ran plug wires today.

sorry I don’t have any info yet?

 

[thatcabledude]

I wouldn’t run a 3/8 hose on a 5/16 barb for gasoline on something I care about. At least it’s in the cab and not over top your header though.

 

[lcwizard]

the other option is , use the correct fitting at the tank then somewhere just past the tank, add a 5/16 barb to 3/8 barb reducer

 

[Trippster]

That is a good option! If I run into any problems I’ll check it out.

Thank you for the info

Ben

 

[Casey E]

If my memory is working, I believe the 2F air rail nut is the same size as the fuel tank outlet. I don’t have one handy but next time I’m at our shop I’ll try and pull a rusted one to check for everyone.