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Thread: teflon hoses

  1. #1

    teflon hoses

    I just looked at this for my oil cooler lines and it was about $75 more
    to replace the teflon with integrated fire sleeve - seems like in the
    neighborhood of $320 complete. They sell them as a certified kit. Mine
    are 5 years old so I did not replace them this year. but likely will
    next. The teflon, per my understanding, are thinner(externally) and
    once they age a little become fairly rigid. They do allow oil to pass
    more easily so you'll get better flow.

    Shelby
    On Tuesday, August 16, 2005, at 07:58 AM,
    musketeermail@yahoogroups.com wrote:

    > Message: 9
    > Date: Mon, 15 Aug 2005 22:05:01 -0700
    > From: "Rod" <r.pierson@sbcglobal.net>
    > Subject: teflon hoses.
    >
    > For those who have replaced there hoses lately, did anyone replace with
    > Teflon type? I understand that our aircraft needs a field approval.
    > My
    > old hoses which are ten years old, and the last five years I have
    > always
    > asked my inspectors if they felt they should be changed, they checked
    > all
    > the hoses and told me that they felt very pliable, well I am not
    > going to
    > be second guessing their condition next annual, I want the piece of
    > mind, so
    > I want to change all hoses to the Teflon which understand has a longer
    > shelf
    > life as well as expectancy on the plane. I had all my old hoses when
    > I
    > installed new had them all fire sleeved which I think has kept them
    > from any
    > direct heat, but also unable to look at all the hoses.
    >
    > By the way after spending time removing my mag and a few other
    > accessories
    > to verify where a noise was coming from, it turned out to be the vacuum
    > pump, a bushing was turning in the race creating a low howl during
    > low RPM
    > and increase to a loud squealing sound when increasing the rpm. The
    > pump
    > only had five hundred hours on it, it was a sigmatek, the vanes looked
    > fine,
    > but I ended up replacing with a Rapco pump.
    >
    > Rod


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  2. #2

    Teflon Hoses

    I am planning on replacing my hoses next month and can't seem to get a good feel for using Teflon hoses. On my Sierra the oil cooler hoses seem to have a short radius bend and with the Teflon hoses being stiffer I am afraid of kinking a hose. When talking to the hose guys they say that if you use Teflon hoses you will need more fittings because Teflon will not make the same radius bend as rubber. Thier opinion is the advantages of teflon do not override the the installation ease of rubber. ( with the hose fire sleeved you have a hard time telling if the hose is about to kink). Has anyone installed Teflon hoses specifically for their oil cooler where it is mounted on a bracket off the firewall about mid engine height. ( 1971 Sierra I0-360 ). By the way I was quoted a slightly lower price for firesleeved Teflon than Firesleeved Rubber.


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