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Old 11-02-2008, 07:59 PM   #1
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Default Max. operating pressure or working pressure?

Which is most important? I'm in need for some fuel line to attach my Vortech and don't want to skimp on serious parts. I already have some nut ended worm clamps to keep the slippery bastards on, but was confused about psi ratings.

Goodyear Replacement Belts and Hoses 65127 - Goodyear Hysunite Fuel Line/Emission Control Hose - summitracing.com
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Old 11-02-2008, 08:01 PM   #2
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Just run to advance and pick up some fuel hose from the back. As long as you grab the FUEL line and not vacuum line you'll be fine.
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Old 11-02-2008, 08:45 PM   #3
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well the advanced nearest me didn't have any fuel line that I could find. So I ran to O'Reilly's and they had some, but they had Fuel line, then Fuel-Injector line
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Old 11-02-2008, 08:46 PM   #4
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https://www.miataturbo.net/forum/t4414/#post41400

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Regular fuel injection hose (SAE30R9) is required to have higher working pressure rating (125psi) and minimum burst pressure rating (900psi). If you are worried about pressures in your fuel lines then, look for an SAE rating on the hose. SAE30R6 and SAE30R7 are low pressure hose for carburated enginges (rated for 50 psi and a minimum burst pressure of 250 psi) and SAE30R9 is a higher pressure fuel injection hose. If your hose has a number between R7 and R9 it is a medium pressure hose.
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Old 11-02-2008, 08:48 PM   #5
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All advances have fuel line (former employee here ) it's just in the back with the vacuum hose (gotta ask for it, find somebody in a white shirt that looks like he's been there a while). And if they tell you they're out of it they're full of ****. It comes in every three weeks or so regardless of how much they sell, I know my store had a good 75 spools or so in stock at a time.
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Old 11-02-2008, 08:54 PM   #6
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you gotta ask for fuel INJECTION hose actually, much higher pressure rating.
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Old 11-02-2008, 08:58 PM   #7
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Haha, former Advance Auto Parts employee here too. Yes, they do sell the high pressure "fuel injection hose" in the back. And like kplafin suggest, most employee's are dumbasses and don't know what they have, or the diff. between regular and fuel injection hose. ****'s like 5 something a foot though....

In all seriousness, you can buy stainless braided line by the roll from summit for about the same price, and then you got something. I think -6AN is around 5/16 (but double check of course). Anyways, -6AN from summit:

3ft- $14 4.67 a foot
6ft- $21 3.50 a foot
10ft- $37 3.70 a foot
15ft- $53 3.53 a foot
20ft- $74 3.70 a foot

If you can swing it, but a roll and you'll have some left over for your next project.
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Old 11-02-2008, 09:41 PM   #8
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Yeah, just whatever. Cable cutters are best, but I imagine tin snips would work. Just try to cut it in one cut, and tap the spot before you cut it so that when you cut it, the stainless doesn't fray. Just like you tape braided rope before cutting it.

Your PM box is full....
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Old 11-02-2008, 09:45 PM   #9
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the smallest I can find is 6AN (6AN = 6/16") and I need 5AN. I suppose I'll go to advanced/autozone and check the SAE specs on their stuff
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