Fuel filter inlet

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Feb 5, 2024 | 06:13 AM

Gjorgjija

Thread Starter

Mountain Pass

Joined: Dec 2018

Posts: 121

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From: Skopje, Macedonia

Fuel filter inlet

Hi folks,
I want to replace pipe with hose that goes from LP to fuel filter

I cannot find 90° connection with hose from one side, so I buy this

Question:
Does will be problem because internal diameter of new part is smaller then original one?

Here (Macedonia) is impossible to find such a part...
Thanks

Feb 5, 2024 | 07:01 AM

tjc transport

i ain't rite

Joined: Mar 2005

Posts: 65,481

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From: Marlboro Mental Hospital.

as long as you get 1/2 liter of fuel in 30 seconds cranking the engine into the injector pump and 7 PSI, you will be fine.

Feb 5, 2024 | 07:09 AM

Gjorgjija

Thread Starter

Mountain Pass

Joined: Dec 2018

Posts: 121

Likes: 1

From: Skopje, Macedonia

Ahhh hard to measure pressure...
What if the pressure is higher, because phisics says that if diameter is smaller, pressure increase? Does will make any damage?

Feb 5, 2024 | 08:44 AM

tjc transport

i ain't rite

Joined: Mar 2005

Posts: 65,481

Likes: 5,542

From: Marlboro Mental Hospital.

higher pressure will change timing of injector pump.
what i do is check pressure at schrader valve on fuel filter.
should be around 7 PSI cranking, and at least 1 PSI engine running full throttle.

Feb 5, 2024 | 09:48 AM

Gjorgjija

Thread Starter

Mountain Pass

Joined: Dec 2018

Posts: 121

Likes: 1

From: Skopje, Macedonia

someone to point me where I can find pressure gauge or that kind of L-connector with proper diametar and hose fitting on other side?

Feb 5, 2024 | 10:21 AM

mf7lakes

Cross-Country

Joined: Jan 2011

Posts: 73

Likes: 8

Look a' here --->

https://classicdieseldesigns.com/col...d-line-upgrade

Plus-- wouldn't a 6AN hose & fitting work/fit for the supply line from the mech pump to filter head -- pretty sure the i.d. is more than enough

Feb 6, 2024 | 08:00 AM

tecgod13

Logistics Pro

Joined: Sep 2007

Posts: 3,737

Likes: 179

From: Western Mass

You could drill out the fitting. I'm sure its that thick to withstand the high pressure of a hydraulic system. Our fuel system is low pressure so no need to be that thick.
I think you are probably over thinking this, yes its a restriction, but I'm not sure it would make too much of a difference unless you have a high performance turbo engine.

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Feb 12, 2024 | 01:58 PM

Prototypemech

Logistics Pro

Joined: Nov 2013

Posts: 3,928

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From: Mojave, Ca

Neither. It's a fuel olive. Basically a piece of rubber hose that gets squished between the nut and the steel tube.

Feb 12, 2024 | 02:05 PM

#10

Gjorgjija

Thread Starter

Mountain Pass

Joined: Dec 2018

Posts: 121

Likes: 1

From: Skopje, Macedonia

I want to change it with connector with barb how can I put hose instead pipe, so I need dimension of that fitting

Feb 14, 2024 | 09:27 AM

#11

LukeTheDuke256

Trailering

Joined: Jul 2022

Posts: 17

Likes: 2

From: North Alabama

I have swapped those lines out with Parker PushLoc plus fuel hose. you will require an NPT -> ORB adapter fitting to a -6AN fitting. I do not recall the correct dimensions off the top of my head, but I can get back with the correct info after I get off.