Chuff's MK1 Escort

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vlad01
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Re: Chuff's MK1 Escort

Post by vlad01 »

I'd use the rubber ones. All modern EFI cars use rubber encased mounts as it protects from fretting damage when the lines move and vibrate around.
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Chuff
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Re: Chuff's MK1 Escort

Post by Chuff »

vlad01 wrote:I'd use the rubber ones. All modern EFI cars use rubber encased mounts as it protects from fretting damage when the lines move and vibrate around.
That's my thinking as well, but it then begs the question why is it impossible to find double cushioned fuel line clamps on most performance websites. Singles are common, but most installations run the supply & return lines side by side so wouldn't it make sense to sell a double cushioned clamp? Sure, I could run staggered single clamps along both the lines as they run up the car, side by side, but that would look like a dog's breakfast by comparison. And I'd have to run then in opposite orientation, one up, one down as they get staggered, and then how do I screw them in as the opposing fuel line would be covering the hole to screw the clamp to the car. It make no sense.

Took me forever at Pick-A-Part to find exactly the right double 3/8 cushioned clamps & now that I have I think I'll use them.

Only other consideration is that my hard lines are not steel or stainless steel, they're aluminium. That may impact the final decision as I believe the picture of the first clamps on my previous post are specifically for aluminium tube, as it may need to be mounted hard up against a surface due to it's strength not being that of steel, thereby minimising the chances of bending it compared to having it suspended in the cushioned clamps, but I'm not sure.

I'll ponder, as I have to completely redesign the entire fuel system from scratch as the original design I had in mind just won't work.
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Re: Chuff's MK1 Escort

Post by vlad01 »

Yeah a lot of the automotive industry is missing basics that the OEM have had for decades, this is one such case.
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Chuff
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Re: Chuff's MK1 Escort

Post by Chuff »

So up until now this is how I was going to run my fuel setup at the rear of the Escort. This was Plan A.
IMG_20211221_135626.jpg
Plan was to feed the standard Camira pump via a 12mm hose, then 5/16 hose to the damper, another 5/16 hose from the damper to the filter which is fitted with a 5/16 barb and then exit the filter via a 3/8 barbed fitting which would then allow the 3/8 hose to connect to the 3/8 hardline. This was the point where the transition took place from 5/16 fuel line to 3/8 fuel line. From this point onwards the remainder of the fuel system would be 3/8 hardline all the way to the engine and back to the tank via the return line.

Unfortunately, no matter how I oriented the components I could not get it all to fit within the confines of the Escort floorpan without bits and pieces hanging in precarious positions, fouling with other components of the car, or simply not fitting. And since my transition from 5/16 to 3/8 was occurring at the filter I wanted to keep the filter as close to the other components as possible otherwise I would need to either run 5/16 hose or hardline to wherever the filter was located.

So Plan A was a bust.

On to Plan B.
IMG_20211221_132144.jpg
This is what I just purchased today. A Bosch 044 with replaceable built in check valve going into a -8 adaptor which allows a 40mm diameter SpeedFlow filter to be connected directly to the pump. The filter then has a -6 reducer fitted on the exit and from there connects straight to the 3/8 hardline utilising either compression fittings or tube nuts, I haven't decided on that bit yet.

The 044 pump will be fed via 3/8 hardline into a banjo fitting connected directly into the inlet side of the pump. The banjo fitting will allow me to place the pump as far as possible towards the rear of the car giving me room to fit the whole lot into the confines I have. I was unable to place the old pump in Plan A this far back as the 12mm supply hose had absolutely no chance of making the necessary bends between the tank and the pump. Not a hope in hell.

Here's some photos of where it all sits.

This 1st photo was taken from the centre of the rear of the car looking towards the driver side. The hanger bracket for the leaf spring has full range of movement without fouling anything.
IMG_20211221_131608.jpg
This was taken looking down the chassis rail showing the gap between the chassis rail & the boot floor & where the pump & filter sit & where the hardline has to go as it exits the filter.
IMG_20211221_131651.jpg
In this photo you can see the exit point of the fuel tank circled in yellow. Plan is to have a 90 degree elbow exit towards the rear of the car, then a pre-pump filter followed by a hardline continuing towards the rear of the car, behind the spring shackle, under the chassis rail & finally into the pump via the banjo fitting,
TankExit.jpg
As for the damper, this will be installed in the engine bay on the firewall. At this stage this is what I'm considering, a Radium inline damper.
Damper1.png
Damper1.png (71.22 KiB) Viewed 3652 times
Now to figure out the rest. :?
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Chuff
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Re: Chuff's MK1 Escort

Post by Chuff »

Well that didn't take long.

Plan C :|

After cafeully considering Plan B it occurred to me last night that once the entire fuel system had been fitted there was no easy way of taking the fuel filter out for maintenance. So now we have...
IMG_20211222_130418.jpg
All Plan B fittings have been removed, as well as the built-in check valve from the pump. The pump now exits directly into a screw-in check valve with a -6 exit which will connect to the hardline all the way to the firewall. Here it will connect to the fuel filter, exit into the damper and finally into the fuel rail. There was nowhere else suitable under to car to locate the fuel filter without presenting one or more issues except the firewall.

Hopefully there is no Plan D.
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Re: Chuff's MK1 Escort

Post by vlad01 »

Maybe you could mount the filter in the engine bay providing the engineer would be happy with that?
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Chuff
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Re: Chuff's MK1 Escort

Post by Chuff »

vlad01 wrote:Maybe you could mount the filter in the engine bay providing the engineer would be happy with that?
That's the plan. Mount the filter just before the damper in the engine bay.

Why would any engineer not be happy with having the fuel filter in the engine bay? I don't see any reason why I can't mount the filter anywhere I like along the fuel line runs, so long as it's secure & doesn't leak it should pass any test, unless there's something about filter placement that I'm unaware of.

One thing I'm not sure of, and it could be an issue, is if I connect the fuel filter directly to the fuel damper. I don't want to add a short length of hard line between the filter & damper. Just one more potential place for a leak. Any opinions on whether this is a bad idea or not, or even illegal?

Thanks.
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Re: Chuff's MK1 Escort

Post by vlad01 »

Mainly due to possibility of leaks or ruptures that can cause fires. Was one of the main reasons VWs often burned down.

But this style filter should be pretty safe being billet.
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