Thanks for the info Bill. My only experience with teflon is as an electrical
insulator. If anyone wants to make the ultimate wiring harness, use teflon
insulated wire.
Bob Donahue (Still stuck in the '50s)
Email - bobmgtd@insightbb.com
52 MGTD - NEMGTR #11470
71 MGB - NAMGBR #7-3336
----- Original Message -----
From: <bilking@comcast.net>
To: "Bob D." <bobmgtd@insightbb.com>; <mgs@autox.team.net>
Cc: <mg-t@aurox.team.net>
Sent: Sunday, December 29, 2002 3:54 AM
Subject: Re: Warning - leaking replacement flexible fuel lines
Teflonb actually makes a pretty poor hose by itself. Teflon is prone to
cold flow so the pressure of the clamp would cause the hose to slowly ooze
at the clamp. Also it is a pretty weak plastic. What I think you meant to
say was a multi layer hose with a Teflon inner layer. This is relatively
new technology developed for the CARB shed test. The Teflon gives
impermability and the other layers give structure. I would not suggest
Teflon lined for coolant as hot water is one of the few things which over
time will break down the fluorine-carbon bond. Fuming sulfuric acid is
fine, hot water is bad, go figure.
Bill- way too many years in Dupont Polymers
----- Original Message -----
From: "Bob D." <bobmgtd@insightbb.com>
To: <mgs@autox.team.net>
Cc: <mg-t@aurox.team.net>
Sent: Saturday, December 28, 2002 4:52 PM
Subject: Re: Warning - leaking replacement flexible fuel lines
> I've had quit a history of replacement hose problems (gas, oil and
coolant).
> And these hoses were straight from the common Brit part catalogs. Now I
only
> buy a Brit "reproduction" hose, if I can't make something from the local
> automotive store fit.
>
> I've had several replacement oil sensor hoses leak like sieves. Underneath
> the braided sheath, the rubber hose was full of cracks. I hate sheathed
> hoses! IMHO, the only thing a sheath is good for is hiding cracks in
crappy
> hose material. One thing I've learned (the hard way) is that hoses should
> have absolutely no cracks. When I purchase a new hose, the first thing I
do
> is flex it and look for cracks. (It's important to flex the hose!) Any
sign
> of cracks no matter how fine, means the hose will fail within a year.
>
> IMHO, replacement hoses for oil and gas should be made of Teflon in this
day
> and age. Teflon is impervious to everything and should last forever.
>
> One more thing, make sure your replacement water hoses are re-enforced
with
> an inner cord. You can see this as embedded threads looking at the ends of
> the hose. I bought a set of radiator hoses that didn't have this, and they
> blew up like balloons. This was quite entertaining until they finally
split
> wide open.
>
> Bob Donahue (Still stuck in the '50s)
> Email - bobmgtd@insightbb.com
> 52 MGTD - NEMGTR #11470
> 71 MGB - NAMGBR #7-3336
>
>
> ----- Original Message -----
> From: "Kevin & Deana Brown" <MGTRAutoXr@sprintmail.com>
> To: "MGT List" <mg-t@autox.team.net>
> Sent: Sunday, December 29, 2002 1:06 AM
> Subject: Warning - leaking replacement flexible fuel lines
>
>
> > Has anybody had trouble with replacement flexible fuel lines leaking
> > after only a few years? Today went I went out to fire up the TF both of
> > the flexible fuel lines oozed gas through the braided metal coverings
> > along their entire length - fortunately I realized it before the car
> > started (I heard the gas dripping down on to the garage floor) otherwise
> > it could have been a disaster. I just bought these lines from Just
> > Brits 3 years ago. I drove it some the first year or so and then it has
> > been sitting for the past year and a half with the fuel drained from the
> > lines and carbs. I am not impressed - especially since the lines cost
> > about $70. I cut the fittings off of both lines and replaced them with
> > standard rubber fuel hoses and worm drive clamps. I then stripped the
> > braided metal coverings off of both lines and found that both were
> > cracked and rotten along their entire length. Also, the flexible
> > material that the lines were made out of was very thin compared to the
> > fuel hoses that I was replacing it with and was obviously made of
> > inferior materials. Has anybody else had this sort of problem? From
> > what vendors have you purchased lines that have worked? I don't buy the
> > excuse that it's "today's gas" that is attacking the lines - that might
> > be the case if I was trying to use old lines, but these were only three
> > years old. Also, I have several older cars and trucks ('39, '49 and
> > '70) one of which has flexible lines at least 30 years old, and I never
> > had this kind of problem. In fact I used some flexible hose and clamps
> > off of a '51 GMC parts truck to replace the "new" high priced hoses on
> > the TF. Thanks for your input.
> >
> > It's supposed to be in the 60s tomorrow here in the Kansas City area, if
> > I get the brakes bled on the TF and the oil changed I plan to take it
> > out for a spin to celebrate the upcoming new year!
> >
> > Kevin Brown
> > Odessa, MO
> > 1954 MGTF 1500 RHD (1 of 19 RHD TF 1500 export models produced in 1954)
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