[DML] Re: Injection Lines

["content22207" <brobertson@xxxxxxxxxxxx>]

Stock DeLo injection hose is known as "fluoroelastometric". Simply
plastic hose within a protective rubber sheath. Has several problems:
- Very little flexibility
- Nearly impossible to re-barb
- I wonder how it will age, given problems with other hard DeLo lines
(clutch hydraulic, heater core shutoff and HVAC vacuum)

Teflon/stainless braided hoses like John Hervey sells seem like an
excellent replacement. Still rather inflexible, but at least they're new.

Even though my Renault PRV uses hard steel fuel lines (just like brake
lines. Are soldered to their banjo fittings), I do use Goodyear
injection hose as you mention for lines to/from the pump, and to/from
the fuel distributor. Is indeed rated 125 PSI -- what that means is
you don't have to worry about fuel pressure flaking off miniscule
pieces of rubber to clog up the system (it's a very bad idea to use
regular fuel line hose anywhere after the pump for that reason). These
100% rubber lines are held to their barbs with smooth band clamps.
Work excellently.

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, "Jason Rowe" <rowejj@xxxx> wrote:
>      Hello List,
>                   This may be a dumb question but why can't we just
use regular
> fuel injection hose instead of that thin hard line inside of the big
bulky line?
> Why not just use 1/4in or whatever it is with regular clamps? Is it
like that
> just for extra protection from the engine heat and elements or what?
If I'm not
> mistaken our systems are running about 75psi and some of the
injection hose
> I've seen are rated up to 125psi. I am really bosch/fuel injection
in general 
> illiterate so if this is in fact a dumb question please excuse my
ignorance. 
> 





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