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Another fuel line question... which is best?

Discussion in 'Boxers/TR/M' started by bpu699, Jun 4, 2017.

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  1. bpu699

    bpu699 F1 World Champ
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    #1 bpu699, Jun 4, 2017
    Ok, one of my fuel pumps burned out... so, need to change it, and the 4 inches of tubing connecting it to the tank...

    As I recall, getting 5/8 fuel line in an SAE30R9 is darn near impossible...

    So I searched, and searched... What have people used? I see people using goodyear "weather shield"... that an R7

    2009 Brain Call/Rifledriver posts that he uses R7 in that application, as its low pressure. Then, there's dozens of threads that R7 is falling apart...

    So, options as I see it:

    1) Dave Helms kit... not a current option. I need 4 inches of hose, not an entire kit... not available separately as I understand it.

    2) Use 1/2 inch, as I think thats available. Just stretch it on and hope it fits...

    3) Aeroquip...saw folks mention using this... just buy AN10. Will this work with just regular clamps and without AN fittings? Saw some folks posting pics with just regular clamps, but I thought this hose was pretty "rigid."

    4) Use R7. Nope. I assume that a bad idea... Though thats the only type of 1/2 inch or 5/8 fuel hose that ANY auto store carries. Tried them all...

    5) Ferrari hose... if I am looking at Ricambi correctly, is like $240 for 4 inches. Anyone know what this hose is? R7? R9? Is it made of fairy wings and wizard skin?

    So, is #3 the best option? Aeroquip Starlite hose? I believe Brian said he uses either this, or Dave Helms kit...

    Of note, the original hose, which is likely 30 years old, wasn't leaking. Cracked it open, inside looked just fine...
     
  2. Simba

    Simba Formula Junior

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    #2 Simba, Jun 4, 2017
    AN hose is typically just conventional hose with a braid around it, be it stainless steel or nylon or what have you. If you remove the braid, it's just normal hose.

    Personally I use Tygon tubing, which is available in just about any size, and compatible with all fuels-- also has the benefit of remaining flexible in low temps.
     
  3. bpu699

    bpu699 F1 World Champ
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    #3 bpu699, Jun 4, 2017
    Not sure of that?

    Saw some AN hose in a race shop, and the inside was a stiff hard plastic...didn't look anything like rubber hose...

    That's why I am confused when I see people mention using it with just clamps... Maybe there is different kinds?
     
  4. Santino1

    Santino1 Karting

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    #4 Santino1, Jun 4, 2017
  5. bpu699

    bpu699 F1 World Champ
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    #5 bpu699, Jun 4, 2017
    Interesting...

    The 14mm hose says it's rated to 50% etoh? Other hoses have no rating. There were some threads on here suggesting the cohline hose fails in higher heat...

    Don't know...head spinning again.

    The original hose was cloth braided, and looked great when I split it... Sigh...
     
  6. bpu699

    bpu699 F1 World Champ
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    #6 bpu699, Jun 4, 2017
    Ok... Went to car quest...

    They have 5/8 inch gates 4219xl sae30r7 fuel hose...

    Per the Gates site, it's good for up to e15....

    http://www.gates.com/oreilly/PDFs/Fuel%20Systems.pdf

    They also make the r14 barricade hose which is less permeable, in 1/2 inch which could be stretched on... I think that's Gates 27306...

    Anyone use these?

    So confusing. Keep reading horror stories on here with Gates R7 hose self destructing in a year... But if it were that bad, wouldn't they have been sued out of business already or stopped making it???
     
  7. bpu699

    bpu699 F1 World Champ
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    #7 bpu699, Jun 4, 2017
  8. Rifledriver

    Rifledriver Three Time F1 World Champ

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    #8 Rifledriver, Jun 5, 2017
    Where did I say I use R7?
     
  9. bpu699

    bpu699 F1 World Champ
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    #9 bpu699, Jun 5, 2017
    Last edited: Jun 5, 2017
    It was early on about 10 years ago. Someone asked about using r7 to feed the fuel pumps. You mentioned it would be fine as that's a low pressure area and you have used it... that was before all the leaks started. Will find it later when I get a break at work... saw the thread again last night as I was searching.
     
  10. bpu699

    bpu699 F1 World Champ
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    #10 bpu699, Jun 5, 2017
    Follow up...

    Just to clarify, you clearly don't recommend R7 over the last 10 years or so...

    I tried to find the thread where you reference it... and I don't know what search words I used...

    For clarity for any readers; Brian doesn't recommend R7 :).

    Bo
     
  11. Rifledriver

    Rifledriver Three Time F1 World Champ

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    #11 Rifledriver, Jun 5, 2017
    I do not believe I have ever said it. I was one of the people posting pictures of year old R7 hose allowing gas to run out on the ground many years ago.
     
  12. mike32

    mike32 F1 Veteran

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    #12 mike32, Jun 5, 2017
  13. mike32

    mike32 F1 Veteran

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    #13 mike32, Jun 5, 2017
  14. Dr Tommy Cosgrove

    Dr Tommy Cosgrove Three Time F1 World Champ
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    #14 Dr Tommy Cosgrove, Jun 5, 2017
    I just had an R7 hose fail on me. The date code was from 2015 and it was put on last year but here was the deal; it was the hose from my fuel filter to the fuel pressure regulator (not my Ferrari ).

    Had I not needed to jump the car I would not have seen the aneurysm. It actually blew in my face when I was looking at it. Impeccable timing.

    It is bad enough when a shop does just what is needed to get by, but this type of behavior is outright dangerous.
     
  15. Rifledriver

    Rifledriver Three Time F1 World Champ

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    #15 Rifledriver, Jun 5, 2017
    Not sure what you mean here Tommy but in fairness to the shop it is marked and sold as fuel hose. Lot of people out there don't know it's no good.
     
  16. bpu699

    bpu699 F1 World Champ
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    #16 bpu699, Jun 5, 2017
    Ok, the confusion continues...

    Was going to order the aeroquip sold from Pegasus Racing. Talked to the tech, he said should be fine. I look at the pic on the catalog and it shows SAE100r6.. What the heck? So its R6????

    Goto our local race shop, guy shows me all the race hose/braided stuff with rubber inners...

    Box says synthetic CPE inner liner... Good for fuel/oil/coolant.

    Doesn't say any more. Neither do the websites

    Talk to the older parts guy at Advanced Auto. The only place staffed by guys in their 50 and 60's. Ask for 1/2 inch or 5/8 R9 rated fuel line. He asks why, as everyone gets R7... And of course, they don't have the R9...

    So, back to the original choices... what say you all?

    A couple threads on here mention using Aeroquip 1525... is that the one to use? That's NOT what most race shops carry...
     
  17. Dr Tommy Cosgrove

    Dr Tommy Cosgrove Three Time F1 World Champ
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    #17 Dr Tommy Cosgrove, Jun 5, 2017
    I thought about that for a moment but this is pushing against the FI, not a carburetor. Hell, the end that blew was the end connected to the psi regulator AND they used a regular radiator type clamp instead of a proper smooth style that won't cut into it as badly.

    YOU know the difference between high psi tubing, low psi tubing, vapor tubing, and so on but that it the difference between someone like yourself that earns your fee because you are a professional vs someone that does something without thinking past the big writing on a box and collects money for doing it. If that.
     
  18. Shamile

    Shamile F1 Veteran

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    #18 Shamile, Jun 5, 2017
    I've changed these hoses with the 1/2 " and fought like crazy to get them on. I think it was gates fuel line from Napa....never again!

    Any hose I get for the car now is Dave Helms hose kits...yes, it's damn expensive but it lasts a very long time...more so any any crap Ferrari hose.

    I remember talking to Dave when he was developing the hoses and the testing he was putting them though...not to mention the involvement of Gates engineers.

    Bite the bullet and go with Dave's Scuderia Rampante.
    Oh, the attention to detail on the clamps is impressive....especially to someone like myself in industrial manufacturing.

    Shamile

    Freeze. . . Miami Vice!

    Sent from my SAMSUNG-SM-G900A using Tapatalk
     
  19. Simba

    Simba Formula Junior

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    #19 Simba, Jun 5, 2017
    That's teflon, which is a different animal. Conventional AN hose is just a rubber blend.
     
  20. bpu699

    bpu699 F1 World Champ
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    #20 bpu699, Jun 6, 2017
    Alright, found some gates barricade r14 in 1/2nch, supposedly exceeds r9 spec. Available locally...and on Amazon. Gates website states suitable for gasoline, e85, methanol, ethanol, and gasohol. Not recommended on PRESSURE side of fuel injection.

    For anyone that's looking in the future, its part # 27306/Gates.

    If anyone has had problems with the r14... please let me know.

    For anyone that's curious, trying to get on reinforced 5/8 race line with the rubber cpe inner was a no go. It would take massive force to slip it on. You could do it on the fuel pump, but to risky on the tank...

    Bo
     
  21. mike32

    mike32 F1 Veteran

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    #21 mike32, Jun 6, 2017
    If you look on the site i found, they do this R9 as they say R7 is not much good. They do it off the reel so order what you need
     

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