[DeTomaso] Techno Question: The Fuel Vapor control system

[MikeLDrew at aol.com]

In a message dated 3/23/17 17 39 16, cengles at cox.net writes:


This is really odd and quite trivial, but here goes.
While the engine is out, I have been tidying up the engine bay.   For some
reason, I noticed that the hose that connects the gas tank vent to the
factory charcoal canister is braided stainless steel.     It seems to be 
the
*only* stock factory braided steel hose in the entire engine bay.

>>>The original stock fuel line was also braided, although it wasn't shiny 
so it's not obvious.   There was a flex hose from the fuel tank pickup to 
the inlet of the fuel pump, then a metal hard line from the output of the pump 
up the front of the motor and across to the passenger side, and a short 
length of hose connecting it to the carburetor.


   >                   First dumb techno question:   Does anybody know why 
that
seemingly lowly hose was worthy of the stainless steel braided hose
treatment???....to vent simple gas tank vapor??

>>>It does seem to be a big excessive!

 >                      For the first time I pulled the factory Ford 
Charcoal
Canister from its stock location.    I suppose that the charcoal is kaput. 

>>>Perhaps that's true, perhaps not?   I don't really know what their 
lifespan is purported to be?

> I inspected the canister.   It looks like it *could* be opened with the 
proper
tool.    I assume that if one could open it then it might be possible to 
dump
in another dose of activated charcoal for another four decades.   

>>>It all depends on how concerned you are about the environment.   I would 
suggest that the amount of damage you are doing with your camshaft choice 
and right foot is orders of magnitude greater, and if you really were 
concerned, you would address those issues first. :>)



>                  Second dumb techno questions regarding the Pantera 
charcoal
canister:     for those that worship at the stock original altar, does 
anyone
maintain their charcoal canisters?.....or are they inoperative stock
adornments of the stock original engine bay?

>>>Nobody maintains them.   Whether they still function of not is a matter 
of conjecture.   I moved my water bottles so one now lives where the 
canister used to be, so my beautifully painted and detailed canister and associated 
bracket is in a box.

>For those that have modified their Pantera and worship at the 
laissez-faire
altar, do you completely remove it?    ..add a modern replacement??

>>>As it has no performance impact, and simply represents a token nod to 
environmental concern, you can either leave it in place or remove it; it won't 
have any measurable effect on performance.   You will need to decide where 
and how to run your fuel tank vent hose if you chose to remove the terminus 
formed by the canister however.   There is certainly no harm and perhaps 
some minor benefit by leaving it in place, but it only really works if the 
second hose is connected from the canister to the underside of the air cleaner, 
so that fumes are extracted through the canister and into the air cleaner, 
to be burned by the combustion process…..

>                        Yes, I know it is pretty arcane.

>>>We like arcane!


Mike







-------------- next part --------------
   In a message dated 3/23/17 17 39 16, cengles at cox.net writes:
   This is really odd and quite trivial, but here goes.
   While the engine is out, I have been tidying up the engine bay.  For
   some
   reason, I noticed that the hose that connects the gas tank vent to the
   factory charcoal canister is braided stainless steel.    It seems to be
   the
   *only* stock factory braided steel hose in the entire engine bay.
   >>>The original stock fuel line was also braided, although it wasn't
   shiny so it's not obvious.  There was a flex hose from the fuel tank
   pickup to the inlet of the fuel pump, then a metal hard line from the
   output of the pump up the front of the motor and across to the
   passenger side, and a short length of hose connecting it to the
   carburetor.
     >                  First dumb techno question:  Does anybody know why
   that
   seemingly lowly hose was worthy of the stainless steel braided hose
   treatment???....to vent simple gas tank vapor??
   >>>It does seem to be a big excessive!
   >                     For the first time I pulled the factory Ford
   Charcoal
   Canister from its stock location.   I suppose that the charcoal is
   kaput.
   >>>Perhaps that's true, perhaps not?  I don't really know what their
   lifespan is purported to be?
   > I inspected the canister.  It looks like it *could* be opened with
   the proper
   tool.   I assume that if one could open it then it might be possible to
   dump
   in another dose of activated charcoal for another four decades.
   >>>It all depends on how concerned you are about the environment.  I
   would suggest that the amount of damage you are doing with your
   camshaft choice and right foot is orders of magnitude greater, and if
   you really were concerned, you would address those issues first. :>)
   >                 Second dumb techno questions regarding the Pantera
   charcoal
   canister:    for those that worship at the stock original altar, does
   anyone
   maintain their charcoal canisters?.....or are they inoperative stock
   adornments of the stock original engine bay?
   >>>Nobody maintains them.  Whether they still function of not is a
   matter of conjecture.  I moved my water bottles so one now lives where
   the canister used to be, so my beautifully painted and detailed
   canister and associated bracket is in a box.
   >For those that have modified their Pantera and worship at the
   laissez-faire
   altar, do you completely remove it?   ..add a modern replacement??
   >>>As it has no performance impact, and simply represents a token nod
   to environmental concern, you can either leave it in place or remove
   it; it won't have any measurable effect on performance.  You will need
   to decide where and how to run your fuel tank vent hose if you chose to
   remove the terminus formed by the canister however.  There is certainly
   no harm and perhaps some minor benefit by leaving it in place, but it
   only really works if the second hose is connected from the canister to
   the underside of the air cleaner, so that fumes are extracted through
   the canister and into the air cleaner, to be burned by the combustion
   processa|..
   >                       Yes, I know it is pretty arcane.
   >>>We like arcane!
   Mike