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Old 09-05-2019, 06:40 AM   #1
Jaypee_6680
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Join Date: May 2019
Location: London
Default Fuel rail connection for new 12mm pipe from tank

Hi all,

Iím in the process of fitting LH2.4 to my 1975 245, and still have the fuel pipe to sort out.

I have some 12mm hose for the tank end, but Iím unsure how to join this to:

A) The fuel rail, as the fuel rail has a screwed connection and I canít seem to find any adapters
B) The fuel filter - as the ones Iíve found are for 12mm banjo fittings, which I canít find in anything above a 10mm hose inlet.

Any help much appreciated.

Cheers,

John
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Old 09-05-2019, 01:27 PM   #2
rb92673
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I am going through this with an in-tank pump upgrade from the low pressure to high pressure and eliminated the external high pressure pump. I am using the same model as this thread:

https://forums.tbforums.com/showthread.php?t=324841

12mm high pressure line from tank to stock fuel filter under car ~ 6 feet.
14mm to 1/2 barb to connect to the filter, then stock line from filter to fuel rail.

I don't know the size of the line from filter to fuel rail, but it is smaller than 12mm and hard plastic. The 14 x 1.5 connection is hard to find, I have an extra off a fuel rail I got at the junk yard. This line will also need to be high pressure capable. I have heard Earl's 9894dbh would fit the rail, but the connection is -6AN.
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Old 09-06-2019, 09:44 PM   #3
lummert
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Location: Portland IN
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Quote:
Originally Posted by rb92673 View Post
I am going through this with an in-tank pump upgrade from the low pressure to high pressure and eliminated the external high pressure pump. I am using the same model as this thread:

https://forums.tbforums.com/showthread.php?t=324841

12mm high pressure line from tank to stock fuel filter under car ~ 6 feet.
14mm to 1/2 barb to connect to the filter, then stock line from filter to fuel rail.

I don't know the size of the line from filter to fuel rail, but it is smaller than 12mm and hard plastic. The 14 x 1.5 connection is hard to find, I have an extra off a fuel rail I got at the junk yard. This line will also need to be high pressure capable. I have heard Earl's 9894dbh would fit the rail, but the connection is -6AN.
The nylon tube inside the rubber hose from filter to fuel rail is about 3/16 inch ID. Make sure the intank pump has a check-valve at the outlet.
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