Fair call, Dave. I think I will. The pump has a 1/2 inch inlet.vw54 wrote:i would open the feed line up to 1/2 inch
what pump will you be using whats the size of the inlet on it ???
Hutcho Wolfsburg Wizard
528 posts · joined Aug 2002 ·
What are you guys using as fuel return lines? Now includes Factory Type 3 EFI Tank Pics.
vw54 Administrator Always Waiting 4 Friday
16,723 posts · joined Aug 2002 ·
Most new type EFI pumps have a 1/2 " inlet or feed and a 5/16 " outlet
if you dont increase the inlet line you will most probally find the pump will starve for fuel
and wont maintain correct pressure in the system
if you dont increase the inlet line you will most probally find the pump will starve for fuel
and wont maintain correct pressure in the system
I read it on FACEBOOK so it must be true
http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630
http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099
http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603
http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409
http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630
http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099
http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603
http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409
VWCOOL 23 Windows of Awesome
5,158 posts · joined Jun 2003 ·
yeah that helps with evap emissions control but VW would have sited it there to keep fuel available at the outlet, right down to an absolutely empty tankMickH wrote:You gotta like the way it mixes the warm return line fuel with the "cooler" fuel in the tank👍
Pay your debts, CxxT
Baja Wes V6 Baja Pioneer
3,119 posts · joined Aug 2002 ·
Great pics and info on the type 3 EFI tanks guys.
Wes - www.offroadvw.net - 200HP Quad Cam V6 in a VW Baja - with climate control... 🙂
www.taylorcycles.com.au - My DH MTB racing brothers shop.
www.taylorcycles.com.au - My DH MTB racing brothers shop.
VWCOOL 23 Windows of Awesome
5,158 posts · joined Jun 2003 ·
Do you reckon a USA Beetle Cabriolet EFI would be similar?
Pay your debts, CxxT
MickH Hairy Gutted Sloth
3,389 posts · joined Sep 2003 ·
DUH🤓VWCOOL wrote:yeah that helps with evap emissions control but VW would have sited it there to keep fuel available at the outlet, right down to an absolutely empty tankMickH wrote:You gotta like the way it mixes the warm return line fuel with the "cooler" fuel in the tank👍
tssnq.com.au
pete wood 23 Windows of Awesome
6,828 posts · joined Jan 2004 ·
who'd a thunk this thread could have gone on so long... 🤪
some good stuff in here though.
some good stuff in here though.
"stoopid is stronger than axles"
http://drivingnotpolishing.blogspot.com.au/
http://drivingnotpolishing.blogspot.com.au/
GeorgeL Officially Full-On Dubber
231 posts · joined Feb 2006 ·
There is a happy medium between no swirl pot at all and a full-blown low-pressure-pump-fed swirl pot.
You can add a 1-liter can beneath the tank with an inlet from the tank at the top, an outlet to the pump at the bottom, and an vent outlet at the top that is plumbed into the vent line at the top of the tank. This way you always have 1 liter of fuel available to the pump. The level might drop momentarily during heavy acceleration, but unless you keep your foot in it for a full liter's worth of fun you'll never starve the pump. When you get off the gas the can will refill via gravity feed.
I've seen this done when adapting carb vehicles to EFI where the owner didn't want to alter the stock fuel tank. Seems to work fine.
You can add a 1-liter can beneath the tank with an inlet from the tank at the top, an outlet to the pump at the bottom, and an vent outlet at the top that is plumbed into the vent line at the top of the tank. This way you always have 1 liter of fuel available to the pump. The level might drop momentarily during heavy acceleration, but unless you keep your foot in it for a full liter's worth of fun you'll never starve the pump. When you get off the gas the can will refill via gravity feed.
I've seen this done when adapting carb vehicles to EFI where the owner didn't want to alter the stock fuel tank. Seems to work fine.
Baja Wes V6 Baja Pioneer
3,119 posts · joined Aug 2002 ·
That's the set-up I originally had. It didn't work. The fuel in the surge tank got too hot. See the other surge tank thread.
Wes - www.offroadvw.net - 200HP Quad Cam V6 in a VW Baja - with climate control... 🙂
www.taylorcycles.com.au - My DH MTB racing brothers shop.
www.taylorcycles.com.au - My DH MTB racing brothers shop.
GeorgeL Officially Full-On Dubber
231 posts · joined Feb 2006 ·
Probably because you plumbed your fuel return to the surge tank. If you plumb it to the main tank it should not overheat.Baja Wes wrote:That's the set-up I originally had. It didn't work. The fuel in the surge tank got too hot. See the other surge tank thread.
Here's an interesting approach, the $30 surge tank:
http://www.geocities.com/hrayhouston/antisurgetank.html
(not recommending, but he seems to have had good luck with it!)
Baja Wes V6 Baja Pioneer
3,119 posts · joined Aug 2002 ·
You can do that but you need a very large line going from the main tank to the surge tank, as the fuel flow rate is very high and you don't want to restrict the HP pump at all. If you do it will have a shorter than normal life.
Depending on your pump size a 1L surge tank will last between 15 and 30 seconds without fuel being fed to it. For offroading I wanted a little longer than that. When I used to have a VW engine I used to find the oil light would come on sometimes, particular down steep hills. I didn't want the same problem with the fuel.
Depending on your pump size a 1L surge tank will last between 15 and 30 seconds without fuel being fed to it. For offroading I wanted a little longer than that. When I used to have a VW engine I used to find the oil light would come on sometimes, particular down steep hills. I didn't want the same problem with the fuel.
Wes - www.offroadvw.net - 200HP Quad Cam V6 in a VW Baja - with climate control... 🙂
www.taylorcycles.com.au - My DH MTB racing brothers shop.
www.taylorcycles.com.au - My DH MTB racing brothers shop.
rocknrob Insano Dub Head
844 posts · joined Dec 2003 ·
Well if you are fortunate enough to drive a kombi😎 there is room to slot a decent surge tank in...also gives a bit of reserve in emergencies....
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I've got it sloping down to the pump to get the best effect and reduce sloshing...holds 5litres and the return goes into the high end and from there the breather goes back to the tank. Didn't even need to change the miserable little 6mm outlet from the tank🙅
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I've got it sloping down to the pump to get the best effect and reduce sloshing...holds 5litres and the return goes into the high end and from there the breather goes back to the tank. Didn't even need to change the miserable little 6mm outlet from the tank🙅
Hutcho Wolfsburg Wizard
528 posts · joined Aug 2002 ·
Looks good, Rob.rocknrob wrote:Well if you are fortunate enough to drive a kombi😎 there is room to slot a decent surge tank in...also gives a bit of reserve in emergencies....
Is that clear, steel coiled, hose for the coolant? Would be intersting to see the flow over the longer distances.
Steve
rocknrob Insano Dub Head
844 posts · joined Dec 2003 ·
No Hutcho...that was just some hose i had lying around and used for a test fit...I used the black rubber stuff with the green stripe to get over the hump and stainless for the rest😎 how's your engine going?