MGExp

MGB & GT Forum

Fuel Line Suggestions

Moss Motors
AutoShrine Sponsor
AutoShrine Sponsor
AutoShrine Sponsor
AutoShrine Sponsor

Topic List Forum List Newer Older Start New Topic
Fuel Line Suggestions
#1
drx10 Matt Jurczyszyn
MI, USA   USA
Sign in to contact
1970 MG 14/28
I have a 1970 MGB roadster that I am at the final task of a four year long complete rebuild, the fuel line!
I have purchased from Moss the new lines that connect the gases tank to the fuel pump and the braided flex line from the fuel pump to "something".

Any suggestions on materials? Copper Nickel, fuel injection flex line, braided hose?

Does anyone have a diagraph that shows the vent line location? I can't find one on the internet.

I am running a Weber 32/36, do I need a "fuel return line"? I have seen them referenced in other conversations.

The engine is also "desmogged".

Thanks in advance.

Reply
Was this post helpful or interesting?
Yes No Thank
. Become a Supporting Member to hide this ad & support a small business
Re: Fuel Line Suggestions
#2
Jim K Avatar
Jim K James A. Krasnansky
Liberty, KY, USA   USA
Sign in to contact
1970 MG MGB GT "Chloe"
1971 MG MGB GT "Roscoe"
1972 MG MGB "Camilla"
When I rebuilt Camilla, the '72 I needed a new fuel line. I found some 5/16" brake line and bought 4 of the longest they had - 72" IIRC. I used brass compression fittings for both the fuel & vapor return lines. Worked well, and wasn't expensive.

The vapor return runs along side the fuel, brake, and + battery cable under the car on the right side.

I use SU carbs - I don't think you need a vapor return with a Weber, but the charcoal canister also serves the to ventilate the rocker cover.


Jim K is a grease-stained wretch



Edited 1 time(s). Last edit at 2014-10-30 07:33 AM by Jim K.


Attachments:
100_1013_noted.jpg    40.6 KB
100_1013_noted.jpg

Reply
Was this post helpful or interesting?
Yes No Thank
Re: Fuel Line Suggestions
#3
drx10 Matt Jurczyszyn
MI, USA   USA
Sign in to contact
1970 MG 14/28
James,

Thanks for the feedback.

You used standard compression fittings? I thought these fittings on the fuel pump were some kind of British fitting, hard to find in the US?

By the way, your engine compartment is kind of dirty.... should work on cleaning that up!!!

Just joking!!! It is beautiful!!!!

Mine is not that nice.

Reply
Was this post helpful or interesting?
Yes No Thank
. Become a Supporting Member to hide this ad & support a small business
Re: Fuel Line Suggestions
#4
Jim K Avatar
Jim K James A. Krasnansky
Liberty, KY, USA   USA
Sign in to contact
1970 MG MGB GT "Chloe"
1971 MG MGB GT "Roscoe"
1972 MG MGB "Camilla"
I used standard compression fittings to extend the length of the line. When I made the line from the tank to the pump, I salvaged the original fittings by applying a torch to them, and sweat-soldered them back on the new line. I used the original line as a template to get the bends.

*smile* Yeah - I get a little sloppy on occasion! Thanks.


Jim K is a grease-stained wretch

Reply
Was this post helpful or interesting?
Yes No Thank
Re: Fuel Line Suggestions
#5
supernatural Avatar
supernatural jean gagne
St Andrews, NB, Canada   CAN
Sign in to contact
1971 MG MGB V6 Conversion "Supernatural"
The use of braided hose goes beyond "bling" but care in the selection of the material is critical. The preferred compatible material for ALL automotive fluids is TFE "teflon". Next, for gasoline/ethanol would be butyl rubber "buna N". Plain rubber as offered by most equipment suppliers and should be avoided like the plague as the rubber deteriorates rapidly "several months to years" and leads to untraceable leaks of a potential flammable.

Cheers


Eschew the dominating paradigm -me

because

When you buy the ticket, you take the ride -Hunter S. Thompson

Reply
Was this post helpful or interesting?
Yes No Thank
Re: Fuel Line Suggestions
#6
ddubois Avatar
ddubois Dave DuBois (RIP)
Bremerton, WA, USA   USA
Sign in to contact
The proper fittings at the tank and the fuel pump are 1/4 British Standard Pipe Parallel (not a tapered fitting). James' approach is the best way to get the fittings, although Moss carries them (albeit expensive). As for the flexible line, I use 5/16 ID fuel injection hose. I don't line the braided hoses for the simple fact that you can't see the condition of the hose under the braid.
Cheers,


Dave DuBois
1953 MGTD
1966 MGB
http://homepages.donobi.net/sufuelpumps/

Reply
Was this post helpful or interesting?
Yes No Thank
Re: Fuel Line Suggestions
#7
ClayJ Avatar
ClayJ Silver Member Clay Johnston
Mt. Olive, MS, USA   USA
Sign in to contact
1972 MG MGB
Modern fuel injection hose for the flex parts. Expensive compared to cheap rubber fuel hose.

I'm not a big fan of externally braided hoses, they tend to chafe themselves and/or other parts.

As noted, salvage as much of the old fittings as practical.

I would not run a flex line of any type the length of the undercarriage, too much exposure to road debris.

DO NOT run the lines inside the passenger compartment.

Fewer fittings the better.

Your state's vehicle inspection laws might also be a consideration, especially the vapor recovery system.

Reply
Was this post helpful or interesting?
Yes No Thank
Topic List Forum List Newer Older Start New Topic

To reply or ask your own question:

or

Registration is FREE and takes less than a minute

Forums  

Having trouble posting or changing forum settings?
Read the Forum Help (FAQ) or contact the webmaster





Join The Club
Sign in to ask questions, share photos, and access all website features
Forum List
MGB & GT MG Midget Buy, Sell & Trade Vendor Market MG Performance MG Engine Swaps Factory Correct MGA MGC MG Magnette 1100 & 1300 T-Series & Prewar EV Conversion Modern MG MG Motorsports Events & Meetup MG 2024 Katy Texas Other Vehicles Off Topic Clubs Archived
Your Cars
1970 MG MGB
Olivier Noel   BEL
1970 MGB
Text Size
Larger Smaller
Reset Save