Re: [HSS] Re: 29 Gas Gauge Situation
My experience with inline or aftermarket filters is that they sometimes
tend to cause more problems than they prevent. The '29 vacuum tank has it's
own glass bowl filter on the bottom, which effectively traps any rubbish or
water coming through the system, rendering any other external filter
superfluous. The earlier vacuum tanks have a gauze filter in the top
fitting which will trap any larger bits of rubbish, and the bottom tank acts
as a sediment trap which catches any water or rubbish and should be
drained out regularly. Likewise the top filter should be inspected
regualrly and cleaned out. The feed for the carburettor should be the
outer fitting, which is above the level of the centre one. Most of the
so-called vacuum tank troubles I have been called on to diagnose have been
leaks in the external filters, particularly if a glass bowl filter has been
fitted before the vacuum tank - a leak at the gasket will effectively
prevent any fuel being sucked up from the fuel tank. A sealed in-line
filter before the vacuum tank would be okay, but if this gets filled up and
blocked you will have feed problems. I have done half a million miles in
my Essex, and have no external filters. The only problem I have had with
the vacuum tank in that time - the float developed a leak once and filled
up, so the tank eventually filled up and was allowing raw fuel in to the
engine through the vacuum intake. I know one owner recently had troubles
with his vacuum tank on a '28 Essex, and it was bit of fluff caught in the
flapper valve on the bottom of the inner tank. An inline filter would have
stopped this, or in the case of the earlier pot-metal top tanks, the top
gauze would have. The choice is yours! My policy is if it aint broke, I
don't fix it.
Geoff.
tend to cause more problems than they prevent. The '29 vacuum tank has it's
own glass bowl filter on the bottom, which effectively traps any rubbish or
water coming through the system, rendering any other external filter
superfluous. The earlier vacuum tanks have a gauze filter in the top
fitting which will trap any larger bits of rubbish, and the bottom tank acts
as a sediment trap which catches any water or rubbish and should be
drained out regularly. Likewise the top filter should be inspected
regualrly and cleaned out. The feed for the carburettor should be the
outer fitting, which is above the level of the centre one. Most of the
so-called vacuum tank troubles I have been called on to diagnose have been
leaks in the external filters, particularly if a glass bowl filter has been
fitted before the vacuum tank - a leak at the gasket will effectively
prevent any fuel being sucked up from the fuel tank. A sealed in-line
filter before the vacuum tank would be okay, but if this gets filled up and
blocked you will have feed problems. I have done half a million miles in
my Essex, and have no external filters. The only problem I have had with
the vacuum tank in that time - the float developed a leak once and filled
up, so the tank eventually filled up and was allowing raw fuel in to the
engine through the vacuum intake. I know one owner recently had troubles
with his vacuum tank on a '28 Essex, and it was bit of fluff caught in the
flapper valve on the bottom of the inner tank. An inline filter would have
stopped this, or in the case of the earlier pot-metal top tanks, the top
gauze would have. The choice is yours! My policy is if it aint broke, I
don't fix it.
Geoff.
----- Original Message -----
From: "James Coats" <jamcoats@uab.edu>
To: <HudsonSuperSix16-29@yahoogroups.com>
Sent: Monday, June 20, 2005 7:23 AM
Subject: [HSS] Re: '29 Gas Gauge Situation
>> > Paul...I installed a inline see thru fuel filter a inch or two
>>just before the carb. and it took the strain of the tubbing off the
>>carb. Plus you can see what ever junk that might have gone into the
>>carb. Ron
>
> If you are using an inline filter it's probably the best idea to
> install it on the fuel line just before the vacuum tank. Having trash
> in the vacuum tank is no better than having it in the carburetor. If
> you have an electric fuel pump, install it BEFORE the fuel pump.
>
> Inline filters aren't correct, but I won't have a car OR let a
> restoration out of my shop without one. I use the clear plastic ones
> so you can see when the filter element gets dirty. You will never,
> ever, ever get all of the contamination out of a 76 year old fuel
> tank, and if by some miracle you do, you'll still get bits and pieces
> of trash from the gas station. If you don't like to look at it, tuck
> it inside the framerail by the steering box, on the line coming from
> the fuel tank.
>
> If you're going to install the filter before the vacuum tank, and
> still want a strain relief for the carb, just put a short length of
> hose in the line to the carb. Or, just be careful and make sure the
> copper line is nice and straight so it doesn't preload the carburetor
> when you tighten it down. I have never sat on the valve cover with
> the car going down the road, but can't imagine that the motor in our
> cars moves very much in relationship to the firewall/vacuum tank.
>
> I still need to find a picture of the correct routing of those copper
> lines, as I have rubber hose on my car. Guess I need to go through
> the club library.
>
> Best Regards,
> James Coats
>
>
>
>
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