Is anyone using -4AN connectors in the fuel system?

[ArtJ]

Thanks Neil!

I am planning some work on the fuel system so these will be a great addition!!

Art

[joe_db]

Ok, my boat has 3/8" from the tank to the Racor fuel/water separator with the 10 micron filter. Then is drops down to 5/16" the Racor to the Facet fuel pump and from the output of the Facet it's 1/4" to the metal inline polishing filter and then into the carb.

On a boat I've alway been a fan of the smallest fuel line to do the job and make the engine happy, incase you ever rupture a line. I'll need to run 3/8" from the new tank to the Racor since the output of the tank is 3/8", but was thinking of going 1/4" for everything downstream.

... or am I overthinking this? I have that affliction. (sigh)

Yes you are. Use the same size for everything to make stocking parts and repairs easier. Even a pinhole leak in a tiny fuel line is a deadly hazard, so you are not really gaining anything with multiple sizes of fuel lines.

[joe_db]

The Monel tank already has and issue with the previous owner and he had it removed and coated on the inside and that was about 15 years ago. Or that is what the PO said, but he was not very technical.

The 20 gallon tank I bought is this one. It fits well in the space, give me more room above for accessing the tank level sensor. Plus if I ever want more capacity they also have 27 gallon that is just longer, and only 3" longer than the existing tank.

https://www.overtons.com/scepter-rectangle-27-gallon-fuel-tank-35l-x-16w-x-12h-321242.html

The fuel line I was looking was the teflon PTFE line that does not have permeability issue of the E85 with the rubber lines. That said, if there is a marine version of PTFE with those classly push on AN fittings, that would be prefect.

See https://www.morelandhose.com/marine/...scg-fuel-hose/

[joe_db]

Sure Art. They're readily available but I sourced mine from McMaster-Carr. If considering the same, watch the package quantities. I have no problem with a personal inventory.

1/8" male pipe to 1/4" male flare (fits the carburetor inlet)
M-Carr 50635K373 pkg of 1

1/4" female flare swivel to 1/4" hose
M-Carr 53485K22 pkg of 5

I think I will order those - thanks! Do you use hose clamps on those? They look like the CNG fittings I have that do not use clamps.

[ronstory]

1/4" female flare swivel to 1/4" hose
M-Carr 53485K22 pkg of 5

Neil--

Are the 53485K22 actual swivels or a solid adapter? McCar shows that part number a straight adapter, versus the item above on the catalog page that denotes it "swivels until tightened".

https://www.mcmaster.com/catalog/126/351

[ndutton]

I think I will order those - thanks! Do you use hose clamps on those? They look like the CNG fittings I have that do not use clamps.

I have always used clamps on them and considering we are talking about gasoline inside a boat, definitely.

Neil-- Are the 53485K22 actual swivels or a solid adapter? McCar shows that part number a straight adapter, versus the item above on the catalog page that denotes it "swivels until tightened".

The specified fitting does swivel despite them not mentioning it. I confirmed the item number I provided was the same as I ordered a few years ago. If it didn't swivel you'd torque the attached hose when tightening.

[ronstory]

Ok, just ordered a 5 pack. Neil is seldom wrong, at least in A4 land.

The weird thing about the McCar website is when I ordered, it just charged me for the parts and that "shipping and taxes" would be added. I guess I'm going to see how much shipping is going to be... the hard way. lol

[ndutton]

If they're not exactly as described I'll buy them from you. Did you get the male flare too?

[joe_db]

Ok, just ordered a 5 pack. Neil is seldom wrong, at least in A4 land.

The weird thing about the McCar website is when I ordered, it just charged me for the parts and that "shipping and taxes" would be added. I guess I'm going to see how much shipping is going to be... the hard way. lol

They are usually reasonable and fast.

[ronstory]

Good news and thank-you.

[ArtJ]

Grainger also stocks these parts

[ronstory]

If they're not exactly as described I'll buy them from you. Did you get the male flare too?

Hopefully that won't be needed and 'yes', both the male straight flare and the right angle version. The space on the port side of the engine is tight in the engine compartment so anything to keep the hoses close to the engine helps.

Edit: Crisis adverted - shipping was $7.45 ... quite reasonable. ;^)

[ArtJ]

I ordered ACCIDENTALLY from Grainger and RECEIVED:

their item 3dva6
HOSE FITTING 1/4 ID 7/16-20 F, JIC

their item 2p178
MALE CONN 45 DEG TUBE XMNPT



i MISTAKENLY THOUGHT THIS WAS A QUICK DISCONNECT LIKE ON OUTBOARD BARONETS BUT IT IS A THREADED ON.
CONNECTION.
DON'T KNOW WHERE 45 DEG COMES INTO PLAY?

DID I RECEIVE THE INTENDED PARTS ?

JUST CHECKED NEILS PICTURE ON LINKED POST YES THEY ARE THE SAME PARTS

[joe_db]

I ordered ACCIDENTALLY from Grainger and RECEIVED:

their item 3dva6
HOSE FITTING 1/4 ID 7/16-20 F, JIC

their item 2p178
MALE CONN 45 DEG TUBE XMNPT



i MISTAKENLY THOUGHT THIS WAS A QUICK DISCONNECT LIKE ON OUTBOARD BARONETS BUT IT IS A THREADED ON.
CONNECTION.
DON'T KNOW WHERE 45 DEG COMES INTO PLAY?

DID I RECEIVE THE INTENDED PARTS ?

JUST CHECKED NEILS PICTURE ON LINKED POST YES THEY ARE THE SAME PARTS

You do NOT want an outboard type fitting. Those leak

[GregH]

using these fittings, does one use thread sealant such as Permatex 2?