Chuff's MK1 Escort

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Charlescrown
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Re: Chuff's MK1 Escort

Post by Charlescrown »

I thought it was to reduce the tapping/ticking noise that could be heard in the car. I never could see why they put one on the return line.
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vlad01
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Re: Chuff's MK1 Escort

Post by vlad01 »

Not sure why they would do the return, though I have never seen this personally.

As for noise, in my experience I didn't notice a difference when removing it on a VP, both stock and without are noisy as anyway.
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Chuff
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Re: Chuff's MK1 Escort

Post by Chuff »

vlad01 wrote:My understanding is a damper will help keep the fuel delivery at the nozzle stable across the range of PW and frequency as having no damper it is possible to get weird resonance in fuel pressure pulses and the timing of opening/closing of the injectors which can result in certain PW/frequencies under delivering and some over delivering.

You should be able to tune that out but the VE table might be more spiky than it otherwise would be to get a good AFR control.
Yep, that's what I've read & that's what concerns me, so I'm thinking it's better to have a damper than not.

I've determined that I can fit the pump, damper & filter in the confines of the underbody of the Escort so long as I can find a suitable damper & filter & I can feed the pump at a right angle rather than in line.

I've been Googling & so far I haven't come across any Bosch 044 installations where the feed is at right angles, I've only found installations with the output exiting at right angles but I see no reason why the input can't be at right angles as well.

Also having a lot of trouble finding a narrow EFI filter but my search has just begun & I'm hopeful I will find something suitable.

So a couple of questions. Can the Bosch 044 pump be fed at right angles and does any know of any narrow EFI fuel filters so I can evaluate for my needs?

Thanks.

Chuff
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Re: Chuff's MK1 Escort

Post by vlad01 »

I don't see why you couldn't feed it at right angles. You could also use a smaller pump if the 044 is over kill? Iirc the 044 is physically big for it's capability so you could gain some space using something smaller or more modern.

This the narrowest one I have come across in person. 50mm diameter.

https://aeromotiveinc.com/product/40m-s ... -10-black/
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Chuff
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Re: Chuff's MK1 Escort

Post by Chuff »

Thanks Vlad. Narrowest I've found so far is 50mm which is border-line for my needs but this 40mm unit will be perfect. :thumbup:

I've considered a smaller pump but I've had no luck Googling suitable alternatives. Have you got any links to pumps which are smaller? If I could find a pump that has the inlet & outlet on the same side next to each other then I'd stop searching and buy it immediately. I've found some pumps where the outlet is at right angles to the inlet but that orientation isn't much better for me than the Bosch pumps.

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Re: Chuff's MK1 Escort

Post by vlad01 »

The only pump I have ever seem with in/out on the same end is on a VW type 3, but I doubt you would want to use an EFI pump of the first production car to have EFI in 1968 :lol:
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Re: Chuff's MK1 Escort

Post by Chuff »

Damn.

Vlad, I misread the link to the filter you sent me. I saw 40m in the title & read it as 40mm. I see that it's actually 1.97" so 50mm. :(

So I kept looking & turned to the manufacturer I chose to purchase all my fuel parts from, Speedflow, and their 601 & 602 series filters are only 45mm in diameter & that will fit. :thumbup:

I'm leaning towards the 601 as it's the shorter of the 2 and space is at a premium under the old Escort. The 601 is also available with a check valve on the inlet side. I've haven't considered check valves. What's the benefit of having a check valve & is it necessary?

Thanks.
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Re: Chuff's MK1 Escort

Post by vlad01 »

I never used a check valve before but would be handy if the one in the pump fails as I have had happen about half a dozen times over about a year when I was using 95 premium back in the day, all the BP stations back then had bad or contaminated 95 fuel that was killing my pumps and causing the check valves to stick open after a short period.

A symptom of a stuck valve is the pressure in the rails immediately drop to 0 after the pump primes, making it hard to start the car. Problem immediately went away once I switched back to 91 and 98 and replaced the pump yet again.
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Chuff
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Re: Chuff's MK1 Escort

Post by Chuff »

Thanks Vlad, sounds like a good insurance measure to have the check valve.

So long as I can fit it in the confines I have I'll be using a check valve then. :thumbup:
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Chuff
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Re: Chuff's MK1 Escort

Post by Chuff »

I've been considering what clamps to use with my fuel lines & I've noticed many of these types of hard line clamps on performance sites:
FuelLineClamp.png
FuelLineClamp.png (84.69 KiB) Viewed 3000 times
Obviously the above clamp clamps the hard line hard against the sub frame or floor. I was considering using some dual cushioned clamps which would suspend the hard lines similar to how I've seen on most unmodified factory vehicles like Commodores for example. In another thread I started HQ355 commented that he used VZ Commodore rubber mounts & brackets in his conversion but they don't suit my requirements. Instead, after much searching, I found the following cushioned clamps but am now unsure if I should use them or go with the clamps above.
IMG_20211219_115542.jpg
As I've found very little available in the way of dual cushioned clamps on just about every performance parts website, I'm wondering if there's some legal or engineering reason that I should not use them or will either be just as effective & acceptable to the authorities as each other.

Can anyone shed some light on this?

Thanks.

Chuff
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