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-   -   Recommended fuel line sizes to support NA 575 HP (https://www.offshoreonly.com/forums/general-q/326266-recommended-fuel-line-sizes-support-na-575-hp.html)

hadleycat 05-17-2015 11:14 AM

2 Attachment(s)
[ATTACH=CONFIG]541150[/ATTACH][ATTACH=CONFIG]541151[/ATTACH] I recently replaced my pick-up with a stainless tube with an I.D. of .48 which is just about the same as the I.D. of -10 line. When I hear people talk about 3/8" or 1/2" fuel line I often wonder if they are talking about I.D. or O.D. I always thought -10 line was 5/8" I.D. but everything I have purchased for my set-up in a -10 size measures approx. .48" I.D.

hadleycat 05-17-2015 11:25 AM

The fitting pictured above is a 3/8 npt to a -10 male. It is a stainless fitting. I machined out the I.D. on the 3/8 npt side to match the -10 side. Then tig welded the .48 I.D. tube onto it. Screws right in with no modifications to the tank. It is pictured next to my original pick-up for comparisons sake. I got the idea from some of Eddie Young's posts on here.

SB 05-17-2015 11:43 AM


Originally Posted by hadleycat (Post 4305408)
[ATTACH=CONFIG]541150[/ATTACH][ATTACH=CONFIG]541151[/ATTACH] When I hear people talk about 3/8" or 1/2" fuel line I often wonder if they are talking about I.D. or O.D. but everything I have purchased for my set-up in a -10 size measures approx. .48" I.D.

ID.

Rubber line comes in many different OD's. MArine is typically a lot larger OD for the same ID.

Yeh, -10 typically is close to 1/2" ID.

Budman II 05-17-2015 08:59 PM


Originally Posted by hadleycat (Post 4305408)
[ATTACH=CONFIG]541150[/ATTACH][ATTACH=CONFIG]541151[/ATTACH] I recently replaced my pick-up with a stainless tube with an I.D. of .48 which is just about the same as the I.D. of -10 line. When I hear people talk about 3/8" or 1/2" fuel line I often wonder if they are talking about I.D. or O.D. I always thought -10 line was 5/8" I.D. but everything I have purchased for my set-up in a -10 size measures approx. .48" I.D.

Hadley, that is pretty much what I was planning to do - straight nipple and then a sweeping 90. Did you go with braided lines or something else? I'm thinking that -8 AN should be big enough for my build.

I thought I red somewhere that the AN numbers roughly correspond to 1/16 inch - i.e., -6 is 6/16 or 0.375, -8 is 0.500, #10 is 0.625, etc.

ICDEDPPL 05-17-2015 09:05 PM


Originally Posted by mike tkach (Post 4304923)
i used the fragola black braided hose,not stainless but nylon braid.i did -10 from tank to pump,-10 from pump to fuel log and -6 to each carb bowl,-8 from regulator back to tank.

Kinda like this: :D


http://33outlaw.zenfolio.com/img/s10...06965759-3.jpg


http://33outlaw.zenfolio.com/img/s12...56134709-3.jpg

MILD THUNDER 05-17-2015 09:05 PM

Here are the sizes for the through hole orifices of AN fittings. This is not the "ID" of the AN hose, but the "flare" of an AN fitting. Basically, the hole in the fitting.

-03=.12
-04=.17
-05=.23
-06=.30
-08=.39
-10=.48
-12=.61
-16=.84
-20=1.08
-24=1.31

mike tkach 05-17-2015 09:38 PM

yepper.

Brandonb_05 05-17-2015 11:09 PM


Originally Posted by Black Baja (Post 4305233)
Bud, rip the old one off. Get the drill out and drill the rest of it out. If the old tube falls in the tank no big deal. Tap the remainder of the bung to the new size pickup and call it a day. It will drill like butter. It's aluminum...

Better use a air drill and not a cordless or electric.

Black Baja 05-18-2015 06:33 AM


Originally Posted by Brandonb_05 (Post 4305595)
Better use a air drill and not a cordless or electric.

Don't really understand the reasoning...

hadleycat 05-18-2015 06:36 AM


Originally Posted by Budman II (Post 4305562)
Hadley, that is pretty much what I was planning to do - straight nipple and then a sweeping 90. Did you go with braided lines or something else? I'm thinking that -8 AN should be big enough for my build.

I thought I red somewhere that the AN numbers roughly correspond to 1/16 inch - i.e., -6 is 6/16 or 0.375, -8 is 0.500, #10 is 0.625, etc.

I am going with the Russell nylon braided hose.

I also thought the AN numbers corresponded to a 1/16 ". I guess not!


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