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914World.com _ 914World Garage _ fuel lines

Posted by: mcbain77 Feb 22 2006, 02:41 PM

I have searched!!! However, there isn't any info on my specific issue. I have a '70 1.7L with a fuel pump that was relocated to the '72 - '74 location a long time ago. I am switching out my fuel lines and want to use both 5/16" for return and delivery lines. Since the lines from the tank to the pump are not under pressure (other than gravity) do you think I can make the delivery line switch from 3/8" to 5/16" without any supply problems to the pump?

Yes I am cheap and don't want to buy two rolls of tubing and associated fittings to take the 3/8" lines to 5/16" so I can tie into the fuel pump. Besides I can't find any 3/8" to 5/16" hose barb fittings anywhere.

Ideas?

Posted by: Mueller Feb 22 2006, 03:12 PM

this is a subject YOU have to decide on.....

it's been discussed before...some say yes, others say no....it's your car, you have to live with the choice you make (or the next owner has to live it and you become a DAPO if they don't like it )

Posted by: Eddie Williams Feb 22 2006, 03:22 PM

Hey another SE Texan! Welcome to the club!

Posted by: mcbain77 Feb 22 2006, 04:00 PM

Thanks! I drove this 914 all through High School and then it sat in my Dad's garage for 10 years. I am going through and fixing everything that needs it and hopefully it will be on the street soon.

Posted by: sk8kat1 Feb 22 2006, 04:06 PM

sorry but I have to do this

<--------- native texan here!!

born in ohusto raised in college staion lived in belaire for years

and shouldn't it be you are going through and fixin' every thing?

Posted by: Eddie Williams Feb 22 2006, 04:08 PM

it should be.. he's fixin' to go through and repair everythang!

Posted by: mcbain77 Feb 22 2006, 04:20 PM

i am fixin' to take on a project that is seemingly never-ending!

Posted by: JOHNMAN Feb 22 2006, 04:23 PM

That's just how it feels now.

Just wait for about 6 months when it feels like it will never end. (STILL)

Posted by: zymurgist Feb 22 2006, 04:39 PM

Get a fuel filter with a 3/8" nipple on one side and a 5/16" nipple on the other side. I found one at a local air-cooled VW shop.

Posted by: Mueller Feb 22 2006, 04:41 PM

QUOTE (zymurgist @ Feb 22 2006, 03:39 PM)
Get a fuel filter with a 3/8" nipple on one side and a 5/16" nipple on the other side. I found one at a local air-cooled VW shop.

make sure you get the correct type of filter depending on what side of the fuel pump it is on.........

Posted by: mcbain77 Feb 22 2006, 05:25 PM

i'll look into the filter and see what i can find. that would really be the optimal solution and limit the number of fittings in the system. i will need a 3/8" tank side and 5/16" pump side . . .

i'll let you know what i find.

Posted by: Eddie Williams Feb 22 2006, 06:02 PM

QUOTE (JOHNMAN @ Feb 22 2006, 04:23 PM)
That's just how it feels now.

Just wait for about 6 months when it feels like it will never end. (STILL)

6 months... try 6 years!!!

We interupt this marriage to bring you...

err... I guess I know who's boss!

Posted by: Headrage Feb 22 2006, 06:07 PM

I used 3/8 for both feed and return. Wurked gud...

Posted by: mcbain77 Feb 22 2006, 10:17 PM

How did you tie into the fuel pump from the 3/8" line? That is the only thing from stopping me on this deal. I have looked at all the fuel plumbing fittings etc. from Summit Racing and some other vendors but it seems like I will always have to end up at 8mm (5/16") to tie into the fuel pump.

If I am missing something then please let me know what it is . . .

I could spend several hundred dollars on aluminum fittings and braided steel lines and still have to go from 3/8" to 5/16" at some point. Will a 5/16" High pressure fuel line stretch over a 3/8" SS line?