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Fuel tank pump out process

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Garrett Taylor
(@gwt561324)
Estimable Member
Joined: 4 years ago
Posts: 179
Topic starter  

Does anyone pump the fuel out of the tank as the manual recommends? If so what do you use?


   
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CharleyH
(@charleyhradicalsportscarregistry-com)
Noble Member Admin
Joined: 4 years ago
Posts: 1656
 

Garrett, the SR3's and 8's come with "Pump out" wiring installed.  You just need to make a jumper to power the pump with.  It uses a two-pin SureSeal plug.  There are two ways to get the fuel out of the system.  Some cars come with a "pump out quick disconnect fitting" mounted on the fuel rail.  If your car has that you need to get the matching part from Radical that connects to a hose (PN FL0061 = ~$340 and FL0062 = ~$550, yes you need both).  Then you run the hose to an empty fuel jug and power the fuel pump to drain the tank.  If you don't have the quick disconnect fitting you can remove the fuel "outlet" line from the fuel rail an attach an extension hose with an AN fitting on it to it so it can reach an empty fuel jug.

Here are some pictures that should help.

In this picture you can see where the fuel "pump out" connection is located.

101 3514

Here you can see the "pump out" jumper and the hose I used to tap into the fuel line to dump the fuel.

IMG 3891
IMG 3889
IMG 3888

Charley


   
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John Parsons
(@parsonsj)
Prominent Member
Joined: 4 years ago
Posts: 573
 

The fuel lines are AN6, so it's easy to alter the return line and add an AN6 bulkhead fitting and cap. When you want to drain the fuel tank, swap the cap for a hose to a fuel jug, and drain away. Something like this:

IMG 5313

   
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azwcat
(@azwcat)
Estimable Member
Joined: 3 years ago
Posts: 81
 

Sorry if this is obvious, but what kind of battery do I connect the power clips to?

 


   
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CharleyH
(@charleyhradicalsportscarregistry-com)
Noble Member Admin
Joined: 4 years ago
Posts: 1656
 

@azwcat, any 12v battery will work. Some people even use the battery in the car. 

 


   
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Knut Grimsrud
(@ksgrimsr)
Active Member
Joined: 3 years ago
Posts: 9
 
Posted by: @azwcat

Sorry if this is obvious, but what kind of battery do I connect the power clips to?

 

I use my C-TEK charger set to "supply" mode to power the pump.

 

Pegasus has a nice selection of high-pressure dry-break fittings that are suitable.


   
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azwcat
(@azwcat)
Estimable Member
Joined: 3 years ago
Posts: 81
 

Thanks @charleyhradicalsportscarregistry-com and @ksgrimsr!  I really wish these things had a fuel gauge. 

 

 


   
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GraemeD
(@graemed)
Reputable Member
Joined: 4 years ago
Posts: 220
 

I used Jiffy-Tite fittings and installed it where the return hose connects to the filter regulator assembly. That way any leakage won’t drip on the hot engine. 
all but the drain hose fitting are dry beak fittings, so there isn’t much leakage when disconnecting.

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6442FFA5 7784 4558 BDE6 952212FA799D
49C5DBA0 90CA 4210 8851 2E476F435D3D

   
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ajiman
(@ajiman)
Eminent Member
Joined: 2 years ago
Posts: 25
 

This is a long shot, but does anyone have any spare sockets for the Sure Seal receptacle?  I was going to assemble my own connection to the pump out, but this part is missing world wide (at least at the usual places like Newark).  Part number 031-1267-001.  I requested a few quotes from some places, and am waiting to hear back, but with the low quantity I may not even get a reply.  Anyone happen to have any left over?


   
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CharleyH
(@charleyhradicalsportscarregistry-com)
Noble Member Admin
Joined: 4 years ago
Posts: 1656
 

@ajimanCheck with your local Radical dealer.  Spring Mountain, Radical New York/Group A Racing, and Radical Texas/Esses Racing should all have them in stock.


   
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m roj
(@rojid)
Estimable Member
Joined: 11 months ago
Posts: 95
 

i'm about to do this myself.... just how quick do we have to be when fuel has stopped draining into the container, to turn off the pump before doing any damage to the fuel pump? 

because when i attempt this tomorrow....i'll be stood on the right side of the car watching the fuel drain into my jug...then i'm assuming it'll taper off until i don't see any more fuel come through, at that point i run round to the other side and disconnect the cable.    In those few seconds, the pump would presumably be cycling through with no fuel......is that ok? 

 


   
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John Parsons
(@parsonsj)
Prominent Member
Joined: 4 years ago
Posts: 573
 

@rojid Yes, that's ok. The thing not to do is to get bored and leave, then forget you were draining the tank, and come back an hour later to find the pump cavitating. Just stay there and turn off the pump when the fuel flow drops. You might need to do that a couple of times if you have a fuel bladder with foam, as the draining is faster than some foam "dispenses" fuel.


   
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m roj
(@rojid)
Estimable Member
Joined: 11 months ago
Posts: 95
 

well, after having done the procedure i thought i'd put some closing notes on here for anyone else like me who is new to the world of race car maintenance!

- The fuel power cable you need from radical is reasonably priced thankfully, £40., LH0130. I hooked it up to my standard 12v trailer battery. 

- i bought a Sonoco fuel jug, Demon tweeks £50 - because they are nice and clear with Litre markings etched in and i could easily see the fuel level, not a fan of thoes VP Racing ones which are fairly common. 

- the jiffytite fittings all from demon tweeks too, 

image

£83. Midly annoying thing is the car-end fitting doesn't have a rubber cap, sold separately. I've just covered it with some tape. 
I thought there might be some pressure in the system but there was no drama or spillage when i unscrewed the staubli fitting, SPT08.

- 1meter of fuel hose.. £5. 

- jubilee clip. 

so total cost excl. fuel jug was basically £130....VS buying the Staubli fuel drain socket which from radical was £324, an eye watering amount in comparison. 

The flow of the fuel tapers off to a drip and i stopped it there - didn't bother doing a round 2 as i figure if there's any fuel left in the foam bag, that can be my contingency. 

interestingly i had the ignition on with the PDM readout for the various devices, it didn't say the fuel pump was on whilst it was running, so i guess plugging into that line is a direct connection to the pump? 

anyway all in all, very easy to do and at least now i can properly calculate how much fuel i've used without worrying!

 


   
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Nikki Schumann
(@nick02)
Estimable Member
Joined: 4 years ago
Posts: 82
 

Yes I noticed that too with XX's and PDM cars, even though you have the Master switch OFF, the PDM comes alive when you introduce +12V power to the fuel pump direct feed loom.


   
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benoitM
(@benoitm)
Active Member
Joined: 3 months ago
Posts: 5
 

Hello @charleyhradicalsportscarregistry-com

Do you know where I can buy this:

alim pompe essence

 

Thanks a lot 


   
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