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Old 07-13-2009, 01:48 AM   #1
NSFW
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Default 3/8" fuel lines and factory hard lines?

I've heard that 5/16 fuel line hose works with the factory hard lines, but has anyone tried 3/8? Will a fuel injection hose clamp make a tight enough seal to stay safe, or should I just not go there?

Thanks!
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Old 07-13-2009, 02:14 AM   #2
Rod702
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I wouldn't. clamps won't seal it good enough. I used a conversion 5/16 nipple to 3/8 an fitting on push lock hose rated up to 200 psi and 300 degrees temp. I'm running the injector dynamics intank walbro with inline Bosch 044.
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Old 07-13-2009, 02:39 AM   #3
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Where did you find those conversion bits? I need a half-dozen...

Thanks!
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Old 07-13-2009, 03:11 AM   #4
wrxsti.l
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Aeroquip adaptors HERE and fittings HERE or Mocal fittings HERE.

Leslie
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Old 07-13-2009, 03:27 AM   #5
NSFW
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I see only three 5/16 barb adaptors at that site and none of them have AN fittings... All three have "jiffy-tite" fittings on the other end, which looks neat, and I'm tempted to get a set anyway... but I still need a 5/16-to-AN adaptors.

Am I missing something? Is there a part number or some keyword I should search for? I tried "5/16" and "barb" with no luck.

Thanks!
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Old 07-13-2009, 03:48 AM   #6
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Closest thing so far. Was hoping for a female AN fitting though...
http://www.shopatron.com/product/par...er=15635/415.0

Last edited by NSFW; 07-13-2009 at 05:14 AM.
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Old 07-13-2009, 07:36 AM   #7
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I've had some success stretching 5/16 hose over 3/8 barbs. Just warm it a bit and use some WD-40 and a lot of elbow gease.
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Old 07-13-2009, 09:19 AM   #8
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Old 07-13-2009, 11:17 AM   #9
Rod702
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check ur local hose store. I'm pretty sure they have fuel safe fittings and adaptors. that's where I got mine.
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Old 07-13-2009, 11:28 PM   #10
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Quote:
Originally Posted by SubeTek View Post
That's intriguing. Can you, or someone, confirm that the stock hard lines are 8mm?
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Old 07-14-2009, 04:22 AM   #11
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Quote:
Originally Posted by NSFW View Post
That's intriguing. Can you, or someone, confirm that the stock hard lines are 8mm?
I just measured them myself, seems like 8mm to me.

Thanks for the suggestion!
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Old 07-14-2009, 05:26 AM   #12
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Anyone know of an online shop in the US that carries that part?

I found a dozens of Aeroquip retailers that carry every part except that one.
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Old 07-14-2009, 09:09 AM   #13
SubeTek
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no dealers i've talked to can get it. looks like roger clark is the only place.
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Old 07-14-2009, 10:12 AM   #14
not8player
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5/16 inches = 7.9375 mm

http://www.summitracing.com/parts/EAR-165056ERL/

I used EAR-165056ERL on the stock hard lines in the engine bay. I had to use some sand paper to get the OD of the hard lines down a bit and also heated up the compression olive a tad bit to expand it over the hard line. Easier than it sounds. tested the fuels system at 110 psi with no leaks.
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Old 07-14-2009, 10:20 AM   #15
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Quote:
Originally Posted by not8player View Post
5/16 inches = 7.9375 mm

http://www.summitracing.com/parts/EAR-165056ERL/

I used EAR-165056ERL on the stock hard lines in the engine bay. I had to use some sand paper to get the OD of the hard lines down a bit and also heated up the compression olive a tad bit to expand it over the hard line. Easier than it sounds. tested the fuels system at 110 psi with no leaks.

+12345

Same thing I used to hook up a feed line from the factory fuel tank to my surge tank.
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