[elky] Re: AN Hose
- From: Chris Lindh <chrislindh@xxxxxxxxx>
- To: elky@xxxxxxxxxxxxx
- Date: Mon, 8 Mar 2010 22:55:12 -0500
I watched a video of a line being made and they made the same suggestions
about a straight cut and lubricate the fitting... he also said once it cross
threads it is stuck, so you hand tighten at first.
I'm not sure I like the idea of aluminum fittings, steel and brass have been
reliable. I can also get nylon braided hose - basically the same specs but
with a nylon braid instead of stainless steel. Whenever I consider long
runs of rubber or push lock hose I wonder if a tech at a drag strip would
bounce me for that. The closest drag strip is 85 miles away... I've only
been twice in all these years, but it would be a pain to drive all that way
and not get to race.
I'm not sure about the filter either.
On Mon, Mar 8, 2010 at 9:17 PM, Robert Adams <elcam84@xxxxxxxxx> wrote:
> Have made but I used aircraft stuff which is allot nicer stuff than the
> car stuff. Despite what some advertising says there is a difference. It is a
> pain to assemble. Make sure your hoses are cut perfect and then use the lube
> when screwing the fittings into the hose and same with the collars. The
> steel and stainless ones are great but the aluminum ones are real finicky
> and gall easily.
>
> To be honest on my TPI I used one section of AN hose and it
> lasted a couple years before it started to get wet then spew fuel. I
> replaced that spot with steel line (didn't need flex it's just allot of
> bends). For flexible hose I used plain old high quality FI hose and it has
> been perfect. Not a single problem. I also used aircraft/equipment style
> hose clamps in pairs. They have a stainless sleeve with strain reliefed
> edges and the outer band with the screw is a stainless strap. I have never
> had one of those leak anything. The will hold up to 100s and low thousands
> of PSI so 50lbs of fuel is easy especially using two.
>
>
> Another couple issues with the braided AN hose is that it's very
> abrasive. It has to be adel clamped and no rubbing of any sort allowed or it
> will eat through anything it touches. It's also a pain to bend and get into
> place like you want. I personally have had little luck with using AN hose
> for gas lines as it seems to eat the rubber over time however it works great
> with oils of any sort.
>
>
> Robert Adams
>
> On Mon, Mar 8, 2010 at 6:17 PM, Chris Lindh <chrislindh@xxxxxxxxx> wrote:
>
>> Have any of you made AN braided hoses? I've never been interested in AN
>> hose because of the expense, but now that I am in the performance parts
>> business I have access to "private label" AN fittings and hose that is
>> considerably less expensive. (I also have customers buying fittings & lines
>> as a complement to carburetors I have in inventory.)
>>
>> When I plumbed the EFI on the '80 I used:
>>
>> 3/8" hard line for the feed line joined with connectors
>> Pre-crimped Aeroquip hydraulic line for the soft connection to the filter
>> and from the filter to the fuel rail
>> Stock old feed line for the return line
>> Aeroquip blue push lock hose from the fuel rail to the return fuel line
>> GM OE EFI filter, Fram G3727
>>
>> It appears the pre-crimped hydraulic hoses I used are leaking some fuel.
>> They are also stiff and heavy. You can see one of the lines (not connected)
>> in this photo: http://chrislindh.googlepages.com/010306003mid.jpg
>>
>> I'm also wondering if I should try a different filter, the fittings I used
>> to adapt the filter to AN have a small orifice... Then again I have 6 or 7
>> new ones left...
>>
>> Thoughts?
>>
>> --
>> Chris
>>
>
>
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